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  1. /* Demangler for g++ V3 ABI.
  2.    Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
  3.    Free Software Foundation, Inc.
  4.    Written by Ian Lance Taylor <ian@wasabisystems.com>.
  5.  
  6.    This file is part of the libiberty library, which is part of GCC.
  7.  
  8.    This file is free software; you can redistribute it and/or modify
  9.    it under the terms of the GNU General Public License as published by
  10.    the Free Software Foundation; either version 2 of the License, or
  11.    (at your option) any later version.
  12.  
  13.    In addition to the permissions in the GNU General Public License, the
  14.    Free Software Foundation gives you unlimited permission to link the
  15.    compiled version of this file into combinations with other programs,
  16.    and to distribute those combinations without any restriction coming
  17.    from the use of this file.  (The General Public License restrictions
  18.    do apply in other respects; for example, they cover modification of
  19.    the file, and distribution when not linked into a combined
  20.    executable.)
  21.  
  22.    This program is distributed in the hope that it will be useful,
  23.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  24.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25.    GNU General Public License for more details.
  26.  
  27.    You should have received a copy of the GNU General Public License
  28.    along with this program; if not, write to the Free Software
  29.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  30. */
  31.  
  32. /* This code implements a demangler for the g++ V3 ABI.  The ABI is
  33.    described on this web page:
  34.        http://www.codesourcery.com/cxx-abi/abi.html#mangling
  35.  
  36.    This code was written while looking at the demangler written by
  37.    Alex Samuel <samuel@codesourcery.com>.
  38.  
  39.    This code first pulls the mangled name apart into a list of
  40.    components, and then walks the list generating the demangled
  41.    name.
  42.  
  43.    This file will normally define the following functions, q.v.:
  44.       char *cplus_demangle_v3(const char *mangled, int options)
  45.       char *java_demangle_v3(const char *mangled)
  46.       int cplus_demangle_v3_callback(const char *mangled, int options,
  47.                                      demangle_callbackref callback)
  48.       int java_demangle_v3_callback(const char *mangled,
  49.                                     demangle_callbackref callback)
  50.       enum gnu_v3_ctor_kinds is_gnu_v3_mangled_ctor (const char *name)
  51.       enum gnu_v3_dtor_kinds is_gnu_v3_mangled_dtor (const char *name)
  52.  
  53.    Also, the interface to the component list is public, and defined in
  54.    demangle.h.  The interface consists of these types, which are
  55.    defined in demangle.h:
  56.       enum demangle_component_type
  57.       struct demangle_component
  58.       demangle_callbackref
  59.    and these functions defined in this file:
  60.       cplus_demangle_fill_name
  61.       cplus_demangle_fill_extended_operator
  62.       cplus_demangle_fill_ctor
  63.       cplus_demangle_fill_dtor
  64.       cplus_demangle_print
  65.       cplus_demangle_print_callback
  66.    and other functions defined in the file cp-demint.c.
  67.  
  68.    This file also defines some other functions and variables which are
  69.    only to be used by the file cp-demint.c.
  70.  
  71.    Preprocessor macros you can define while compiling this file:
  72.  
  73.    IN_LIBGCC2
  74.       If defined, this file defines the following functions, q.v.:
  75.          char *__cxa_demangle (const char *mangled, char *buf, size_t *len,
  76.                                int *status)
  77.          int __gcclibcxx_demangle_callback (const char *,
  78.                                             void (*)
  79.                                               (const char *, size_t, void *),
  80.                                             void *)
  81.       instead of cplus_demangle_v3[_callback]() and
  82.       java_demangle_v3[_callback]().
  83.  
  84.    IN_GLIBCPP_V3
  85.       If defined, this file defines only __cxa_demangle() and
  86.       __gcclibcxx_demangle_callback(), and no other publically visible
  87.       functions or variables.
  88.  
  89.    STANDALONE_DEMANGLER
  90.       If defined, this file defines a main() function which demangles
  91.       any arguments, or, if none, demangles stdin.
  92.  
  93.    CP_DEMANGLE_DEBUG
  94.       If defined, turns on debugging mode, which prints information on
  95.       stdout about the mangled string.  This is not generally useful.
  96. */
  97.  
  98. #if defined (_AIX) && !defined (__GNUC__)
  99.  #pragma alloca
  100. #endif
  101.  
  102. #ifdef HAVE_CONFIG_H
  103. #include "config.h"
  104. #endif
  105.  
  106. #include <stdio.h>
  107.  
  108. #ifdef HAVE_STDLIB_H
  109. #include <stdlib.h>
  110. #endif
  111. #ifdef HAVE_STRING_H
  112. #include <string.h>
  113. #endif
  114.  
  115. #ifdef HAVE_ALLOCA_H
  116. # include <alloca.h>
  117. #else
  118. # ifndef alloca
  119. #  ifdef __GNUC__
  120. #   define alloca __builtin_alloca
  121. #  else
  122. extern char *alloca ();
  123. #  endif /* __GNUC__ */
  124. # endif /* alloca */
  125. #endif /* HAVE_ALLOCA_H */
  126.  
  127. #include "ansidecl.h"
  128. #include "libiberty.h"
  129. #include "demangle.h"
  130. #include "cp-demangle.h"
  131.  
  132. /* If IN_GLIBCPP_V3 is defined, some functions are made static.  We
  133.    also rename them via #define to avoid compiler errors when the
  134.    static definition conflicts with the extern declaration in a header
  135.    file.  */
  136. #ifdef IN_GLIBCPP_V3
  137.  
  138. #define CP_STATIC_IF_GLIBCPP_V3 static
  139.  
  140. #define cplus_demangle_fill_name d_fill_name
  141. static int d_fill_name (struct demangle_component *, const char *, int);
  142.  
  143. #define cplus_demangle_fill_extended_operator d_fill_extended_operator
  144. static int
  145. d_fill_extended_operator (struct demangle_component *, int,
  146.                           struct demangle_component *);
  147.  
  148. #define cplus_demangle_fill_ctor d_fill_ctor
  149. static int
  150. d_fill_ctor (struct demangle_component *, enum gnu_v3_ctor_kinds,
  151.              struct demangle_component *);
  152.  
  153. #define cplus_demangle_fill_dtor d_fill_dtor
  154. static int
  155. d_fill_dtor (struct demangle_component *, enum gnu_v3_dtor_kinds,
  156.              struct demangle_component *);
  157.  
  158. #define cplus_demangle_mangled_name d_mangled_name
  159. static struct demangle_component *d_mangled_name (struct d_info *, int);
  160.  
  161. #define cplus_demangle_type d_type
  162. static struct demangle_component *d_type (struct d_info *);
  163.  
  164. #define cplus_demangle_print d_print
  165. static char *d_print (int, const struct demangle_component *, int, size_t *);
  166.  
  167. #define cplus_demangle_print_callback d_print_callback
  168. static int d_print_callback (int, const struct demangle_component *,
  169.                              demangle_callbackref, void *);
  170.  
  171. #define cplus_demangle_init_info d_init_info
  172. static void d_init_info (const char *, int, size_t, struct d_info *);
  173.  
  174. #else /* ! defined(IN_GLIBCPP_V3) */
  175. #define CP_STATIC_IF_GLIBCPP_V3
  176. #endif /* ! defined(IN_GLIBCPP_V3) */
  177.  
  178. /* See if the compiler supports dynamic arrays.  */
  179.  
  180. #ifdef __GNUC__
  181. #define CP_DYNAMIC_ARRAYS
  182. #else
  183. #ifdef __STDC__
  184. #ifdef __STDC_VERSION__
  185. #if __STDC_VERSION__ >= 199901L
  186. #define CP_DYNAMIC_ARRAYS
  187. #endif /* __STDC__VERSION >= 199901L */
  188. #endif /* defined (__STDC_VERSION__) */
  189. #endif /* defined (__STDC__) */
  190. #endif /* ! defined (__GNUC__) */
  191.  
  192. /* We avoid pulling in the ctype tables, to prevent pulling in
  193.    additional unresolved symbols when this code is used in a library.
  194.    FIXME: Is this really a valid reason?  This comes from the original
  195.    V3 demangler code.
  196.  
  197.    As of this writing this file has the following undefined references
  198.    when compiled with -DIN_GLIBCPP_V3: realloc, free, memcpy, strcpy,
  199.    strcat, strlen.  */
  200.  
  201. #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9')
  202. #define IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z')
  203. #define IS_LOWER(c) ((c) >= 'a' && (c) <= 'z')
  204.  
  205. /* The prefix prepended by GCC to an identifier represnting the
  206.    anonymous namespace.  */
  207. #define ANONYMOUS_NAMESPACE_PREFIX "_GLOBAL_"
  208. #define ANONYMOUS_NAMESPACE_PREFIX_LEN \
  209.   (sizeof (ANONYMOUS_NAMESPACE_PREFIX) - 1)
  210.  
  211. /* Information we keep for the standard substitutions.  */
  212.  
  213. struct d_standard_sub_info
  214. {
  215.   /* The code for this substitution.  */
  216.   char code;
  217.   /* The simple string it expands to.  */
  218.   const char *simple_expansion;
  219.   /* The length of the simple expansion.  */
  220.   int simple_len;
  221.   /* The results of a full, verbose, expansion.  This is used when
  222.      qualifying a constructor/destructor, or when in verbose mode.  */
  223.   const char *full_expansion;
  224.   /* The length of the full expansion.  */
  225.   int full_len;
  226.   /* What to set the last_name field of d_info to; NULL if we should
  227.      not set it.  This is only relevant when qualifying a
  228.      constructor/destructor.  */
  229.   const char *set_last_name;
  230.   /* The length of set_last_name.  */
  231.   int set_last_name_len;
  232. };
  233.  
  234. /* Accessors for subtrees of struct demangle_component.  */
  235.  
  236. #define d_left(dc) ((dc)->u.s_binary.left)
  237. #define d_right(dc) ((dc)->u.s_binary.right)
  238.  
  239. /* A list of templates.  This is used while printing.  */
  240.  
  241. struct d_print_template
  242. {
  243.   /* Next template on the list.  */
  244.   struct d_print_template *next;
  245.   /* This template.  */
  246.   const struct demangle_component *template_decl;
  247. };
  248.  
  249. /* A list of type modifiers.  This is used while printing.  */
  250.  
  251. struct d_print_mod
  252. {
  253.   /* Next modifier on the list.  These are in the reverse of the order
  254.      in which they appeared in the mangled string.  */
  255.   struct d_print_mod *next;
  256.   /* The modifier.  */
  257.   const struct demangle_component *mod;
  258.   /* Whether this modifier was printed.  */
  259.   int printed;
  260.   /* The list of templates which applies to this modifier.  */
  261.   struct d_print_template *templates;
  262. };
  263.  
  264. /* We use these structures to hold information during printing.  */
  265.  
  266. struct d_growable_string
  267. {
  268.   /* Buffer holding the result.  */
  269.   char *buf;
  270.   /* Current length of data in buffer.  */
  271.   size_t len;
  272.   /* Allocated size of buffer.  */
  273.   size_t alc;
  274.   /* Set to 1 if we had a memory allocation failure.  */
  275.   int allocation_failure;
  276. };
  277.  
  278. enum { D_PRINT_BUFFER_LENGTH = 256 };
  279. struct d_print_info
  280. {
  281.   /* Fixed-length allocated buffer for demangled data, flushed to the
  282.      callback with a NUL termination once full.  */
  283.   char buf[D_PRINT_BUFFER_LENGTH];
  284.   /* Current length of data in buffer.  */
  285.   size_t len;
  286.   /* The last character printed, saved individually so that it survives
  287.      any buffer flush.  */
  288.   char last_char;
  289.   /* Callback function to handle demangled buffer flush.  */
  290.   demangle_callbackref callback;
  291.   /* Opaque callback argument.  */
  292.   void *opaque;
  293.   /* The current list of templates, if any.  */
  294.   struct d_print_template *templates;
  295.   /* The current list of modifiers (e.g., pointer, reference, etc.),
  296.      if any.  */
  297.   struct d_print_mod *modifiers;
  298.   /* Set to 1 if we saw a demangling error.  */
  299.   int demangle_failure;
  300.   /* The current index into any template argument packs we are using
  301.      for printing.  */
  302.   int pack_index;
  303.   /* Number of d_print_flush calls so far.  */
  304.   unsigned long int flush_count;
  305. };
  306.  
  307. #ifdef CP_DEMANGLE_DEBUG
  308. static void d_dump (struct demangle_component *, int);
  309. #endif
  310.  
  311. static struct demangle_component *
  312. d_make_empty (struct d_info *);
  313.  
  314. static struct demangle_component *
  315. d_make_comp (struct d_info *, enum demangle_component_type,
  316.              struct demangle_component *,
  317.              struct demangle_component *);
  318.  
  319. static struct demangle_component *
  320. d_make_name (struct d_info *, const char *, int);
  321.  
  322. static struct demangle_component *
  323. d_make_demangle_mangled_name (struct d_info *, const char *);
  324.  
  325. static struct demangle_component *
  326. d_make_builtin_type (struct d_info *,
  327.                      const struct demangle_builtin_type_info *);
  328.  
  329. static struct demangle_component *
  330. d_make_operator (struct d_info *,
  331.                  const struct demangle_operator_info *);
  332.  
  333. static struct demangle_component *
  334. d_make_extended_operator (struct d_info *, int,
  335.                           struct demangle_component *);
  336.  
  337. static struct demangle_component *
  338. d_make_ctor (struct d_info *, enum gnu_v3_ctor_kinds,
  339.              struct demangle_component *);
  340.  
  341. static struct demangle_component *
  342. d_make_dtor (struct d_info *, enum gnu_v3_dtor_kinds,
  343.              struct demangle_component *);
  344.  
  345. static struct demangle_component *
  346. d_make_template_param (struct d_info *, long);
  347.  
  348. static struct demangle_component *
  349. d_make_sub (struct d_info *, const char *, int);
  350.  
  351. static int
  352. has_return_type (struct demangle_component *);
  353.  
  354. static int
  355. is_ctor_dtor_or_conversion (struct demangle_component *);
  356.  
  357. static struct demangle_component *d_encoding (struct d_info *, int);
  358.  
  359. static struct demangle_component *d_name (struct d_info *);
  360.  
  361. static struct demangle_component *d_nested_name (struct d_info *);
  362.  
  363. static struct demangle_component *d_prefix (struct d_info *);
  364.  
  365. static struct demangle_component *d_unqualified_name (struct d_info *);
  366.  
  367. static struct demangle_component *d_source_name (struct d_info *);
  368.  
  369. static long d_number (struct d_info *);
  370.  
  371. static struct demangle_component *d_identifier (struct d_info *, int);
  372.  
  373. static struct demangle_component *d_operator_name (struct d_info *);
  374.  
  375. static struct demangle_component *d_special_name (struct d_info *);
  376.  
  377. static int d_call_offset (struct d_info *, int);
  378.  
  379. static struct demangle_component *d_ctor_dtor_name (struct d_info *);
  380.  
  381. static struct demangle_component **
  382. d_cv_qualifiers (struct d_info *, struct demangle_component **, int);
  383.  
  384. static struct demangle_component *
  385. d_ref_qualifier (struct d_info *, struct demangle_component *);
  386.  
  387. static struct demangle_component *
  388. d_function_type (struct d_info *);
  389.  
  390. static struct demangle_component *
  391. d_bare_function_type (struct d_info *, int);
  392.  
  393. static struct demangle_component *
  394. d_class_enum_type (struct d_info *);
  395.  
  396. static struct demangle_component *d_array_type (struct d_info *);
  397.  
  398. static struct demangle_component *d_vector_type (struct d_info *);
  399.  
  400. static struct demangle_component *
  401. d_pointer_to_member_type (struct d_info *);
  402.  
  403. static struct demangle_component *
  404. d_template_param (struct d_info *);
  405.  
  406. static struct demangle_component *d_template_args (struct d_info *);
  407.  
  408. static struct demangle_component *
  409. d_template_arg (struct d_info *);
  410.  
  411. static struct demangle_component *d_expression (struct d_info *);
  412.  
  413. static struct demangle_component *d_expr_primary (struct d_info *);
  414.  
  415. static struct demangle_component *d_local_name (struct d_info *);
  416.  
  417. static int d_discriminator (struct d_info *);
  418.  
  419. static struct demangle_component *d_lambda (struct d_info *);
  420.  
  421. static struct demangle_component *d_unnamed_type (struct d_info *);
  422.  
  423. static struct demangle_component *
  424. d_clone_suffix (struct d_info *, struct demangle_component *);
  425.  
  426. static int
  427. d_add_substitution (struct d_info *, struct demangle_component *);
  428.  
  429. static struct demangle_component *d_substitution (struct d_info *, int);
  430.  
  431. static void d_growable_string_init (struct d_growable_string *, size_t);
  432.  
  433. static inline void
  434. d_growable_string_resize (struct d_growable_string *, size_t);
  435.  
  436. static inline void
  437. d_growable_string_append_buffer (struct d_growable_string *,
  438.                                  const char *, size_t);
  439. static void
  440. d_growable_string_callback_adapter (const char *, size_t, void *);
  441.  
  442. static void
  443. d_print_init (struct d_print_info *, demangle_callbackref, void *);
  444.  
  445. static inline void d_print_error (struct d_print_info *);
  446.  
  447. static inline int d_print_saw_error (struct d_print_info *);
  448.  
  449. static inline void d_print_flush (struct d_print_info *);
  450.  
  451. static inline void d_append_char (struct d_print_info *, char);
  452.  
  453. static inline void d_append_buffer (struct d_print_info *,
  454.                                     const char *, size_t);
  455.  
  456. static inline void d_append_string (struct d_print_info *, const char *);
  457.  
  458. static inline char d_last_char (struct d_print_info *);
  459.  
  460. static void
  461. d_print_comp (struct d_print_info *, int, const struct demangle_component *);
  462.  
  463. static void
  464. d_print_java_identifier (struct d_print_info *, const char *, int);
  465.  
  466. static void
  467. d_print_mod_list (struct d_print_info *, int, struct d_print_mod *, int);
  468.  
  469. static void
  470. d_print_mod (struct d_print_info *, int, const struct demangle_component *);
  471.  
  472. static void
  473. d_print_function_type (struct d_print_info *, int,
  474.                        const struct demangle_component *,
  475.                        struct d_print_mod *);
  476.  
  477. static void
  478. d_print_array_type (struct d_print_info *, int,
  479.                     const struct demangle_component *,
  480.                     struct d_print_mod *);
  481.  
  482. static void
  483. d_print_expr_op (struct d_print_info *, int, const struct demangle_component *);
  484.  
  485. static void
  486. d_print_cast (struct d_print_info *, int, const struct demangle_component *);
  487.  
  488. static int d_demangle_callback (const char *, int,
  489.                                 demangle_callbackref, void *);
  490. static char *d_demangle (const char *, int, size_t *);
  491.  
  492. #ifdef CP_DEMANGLE_DEBUG
  493.  
  494. static void
  495. d_dump (struct demangle_component *dc, int indent)
  496. {
  497.   int i;
  498.  
  499.   if (dc == NULL)
  500.     {
  501.       if (indent == 0)
  502.         printf ("failed demangling\n");
  503.       return;
  504.     }
  505.  
  506.   for (i = 0; i < indent; ++i)
  507.     putchar (' ');
  508.  
  509.   switch (dc->type)
  510.     {
  511.     case DEMANGLE_COMPONENT_NAME:
  512.       printf ("name '%.*s'\n", dc->u.s_name.len, dc->u.s_name.s);
  513.       return;
  514.     case DEMANGLE_COMPONENT_TAGGED_NAME:
  515.       printf ("tagged name\n");
  516.       d_dump (dc->u.s_binary.left, indent + 2);
  517.       d_dump (dc->u.s_binary.right, indent + 2);
  518.       return;
  519.     case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
  520.       printf ("template parameter %ld\n", dc->u.s_number.number);
  521.       return;
  522.     case DEMANGLE_COMPONENT_CTOR:
  523.       printf ("constructor %d\n", (int) dc->u.s_ctor.kind);
  524.       d_dump (dc->u.s_ctor.name, indent + 2);
  525.       return;
  526.     case DEMANGLE_COMPONENT_DTOR:
  527.       printf ("destructor %d\n", (int) dc->u.s_dtor.kind);
  528.       d_dump (dc->u.s_dtor.name, indent + 2);
  529.       return;
  530.     case DEMANGLE_COMPONENT_SUB_STD:
  531.       printf ("standard substitution %s\n", dc->u.s_string.string);
  532.       return;
  533.     case DEMANGLE_COMPONENT_BUILTIN_TYPE:
  534.       printf ("builtin type %s\n", dc->u.s_builtin.type->name);
  535.       return;
  536.     case DEMANGLE_COMPONENT_OPERATOR:
  537.       printf ("operator %s\n", dc->u.s_operator.op->name);
  538.       return;
  539.     case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
  540.       printf ("extended operator with %d args\n",
  541.               dc->u.s_extended_operator.args);
  542.       d_dump (dc->u.s_extended_operator.name, indent + 2);
  543.       return;
  544.  
  545.     case DEMANGLE_COMPONENT_QUAL_NAME:
  546.       printf ("qualified name\n");
  547.       break;
  548.     case DEMANGLE_COMPONENT_LOCAL_NAME:
  549.       printf ("local name\n");
  550.       break;
  551.     case DEMANGLE_COMPONENT_TYPED_NAME:
  552.       printf ("typed name\n");
  553.       break;
  554.     case DEMANGLE_COMPONENT_TEMPLATE:
  555.       printf ("template\n");
  556.       break;
  557.     case DEMANGLE_COMPONENT_VTABLE:
  558.       printf ("vtable\n");
  559.       break;
  560.     case DEMANGLE_COMPONENT_VTT:
  561.       printf ("VTT\n");
  562.       break;
  563.     case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
  564.       printf ("construction vtable\n");
  565.       break;
  566.     case DEMANGLE_COMPONENT_TYPEINFO:
  567.       printf ("typeinfo\n");
  568.       break;
  569.     case DEMANGLE_COMPONENT_TYPEINFO_NAME:
  570.       printf ("typeinfo name\n");
  571.       break;
  572.     case DEMANGLE_COMPONENT_TYPEINFO_FN:
  573.       printf ("typeinfo function\n");
  574.       break;
  575.     case DEMANGLE_COMPONENT_THUNK:
  576.       printf ("thunk\n");
  577.       break;
  578.     case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
  579.       printf ("virtual thunk\n");
  580.       break;
  581.     case DEMANGLE_COMPONENT_COVARIANT_THUNK:
  582.       printf ("covariant thunk\n");
  583.       break;
  584.     case DEMANGLE_COMPONENT_JAVA_CLASS:
  585.       printf ("java class\n");
  586.       break;
  587.     case DEMANGLE_COMPONENT_GUARD:
  588.       printf ("guard\n");
  589.       break;
  590.     case DEMANGLE_COMPONENT_REFTEMP:
  591.       printf ("reference temporary\n");
  592.       break;
  593.     case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
  594.       printf ("hidden alias\n");
  595.       break;
  596.     case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
  597.       printf ("transaction clone\n");
  598.       break;
  599.     case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
  600.       printf ("non-transaction clone\n");
  601.       break;
  602.     case DEMANGLE_COMPONENT_RESTRICT:
  603.       printf ("restrict\n");
  604.       break;
  605.     case DEMANGLE_COMPONENT_VOLATILE:
  606.       printf ("volatile\n");
  607.       break;
  608.     case DEMANGLE_COMPONENT_CONST:
  609.       printf ("const\n");
  610.       break;
  611.     case DEMANGLE_COMPONENT_RESTRICT_THIS:
  612.       printf ("restrict this\n");
  613.       break;
  614.     case DEMANGLE_COMPONENT_VOLATILE_THIS:
  615.       printf ("volatile this\n");
  616.       break;
  617.     case DEMANGLE_COMPONENT_CONST_THIS:
  618.       printf ("const this\n");
  619.       break;
  620.     case DEMANGLE_COMPONENT_REFERENCE_THIS:
  621.       printf ("reference this\n");
  622.       break;
  623.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  624.       printf ("rvalue reference this\n");
  625.       break;
  626.     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  627.       printf ("vendor type qualifier\n");
  628.       break;
  629.     case DEMANGLE_COMPONENT_POINTER:
  630.       printf ("pointer\n");
  631.       break;
  632.     case DEMANGLE_COMPONENT_REFERENCE:
  633.       printf ("reference\n");
  634.       break;
  635.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
  636.       printf ("rvalue reference\n");
  637.       break;
  638.     case DEMANGLE_COMPONENT_COMPLEX:
  639.       printf ("complex\n");
  640.       break;
  641.     case DEMANGLE_COMPONENT_IMAGINARY:
  642.       printf ("imaginary\n");
  643.       break;
  644.     case DEMANGLE_COMPONENT_VENDOR_TYPE:
  645.       printf ("vendor type\n");
  646.       break;
  647.     case DEMANGLE_COMPONENT_FUNCTION_TYPE:
  648.       printf ("function type\n");
  649.       break;
  650.     case DEMANGLE_COMPONENT_ARRAY_TYPE:
  651.       printf ("array type\n");
  652.       break;
  653.     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  654.       printf ("pointer to member type\n");
  655.       break;
  656.     case DEMANGLE_COMPONENT_FIXED_TYPE:
  657.       printf ("fixed-point type\n");
  658.       break;
  659.     case DEMANGLE_COMPONENT_ARGLIST:
  660.       printf ("argument list\n");
  661.       break;
  662.     case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
  663.       printf ("template argument list\n");
  664.       break;
  665.     case DEMANGLE_COMPONENT_INITIALIZER_LIST:
  666.       printf ("initializer list\n");
  667.       break;
  668.     case DEMANGLE_COMPONENT_CAST:
  669.       printf ("cast\n");
  670.       break;
  671.     case DEMANGLE_COMPONENT_NULLARY:
  672.       printf ("nullary operator\n");
  673.       break;
  674.     case DEMANGLE_COMPONENT_UNARY:
  675.       printf ("unary operator\n");
  676.       break;
  677.     case DEMANGLE_COMPONENT_BINARY:
  678.       printf ("binary operator\n");
  679.       break;
  680.     case DEMANGLE_COMPONENT_BINARY_ARGS:
  681.       printf ("binary operator arguments\n");
  682.       break;
  683.     case DEMANGLE_COMPONENT_TRINARY:
  684.       printf ("trinary operator\n");
  685.       break;
  686.     case DEMANGLE_COMPONENT_TRINARY_ARG1:
  687.       printf ("trinary operator arguments 1\n");
  688.       break;
  689.     case DEMANGLE_COMPONENT_TRINARY_ARG2:
  690.       printf ("trinary operator arguments 1\n");
  691.       break;
  692.     case DEMANGLE_COMPONENT_LITERAL:
  693.       printf ("literal\n");
  694.       break;
  695.     case DEMANGLE_COMPONENT_LITERAL_NEG:
  696.       printf ("negative literal\n");
  697.       break;
  698.     case DEMANGLE_COMPONENT_JAVA_RESOURCE:
  699.       printf ("java resource\n");
  700.       break;
  701.     case DEMANGLE_COMPONENT_COMPOUND_NAME:
  702.       printf ("compound name\n");
  703.       break;
  704.     case DEMANGLE_COMPONENT_CHARACTER:
  705.       printf ("character '%c'\n",  dc->u.s_character.character);
  706.       return;
  707.     case DEMANGLE_COMPONENT_DECLTYPE:
  708.       printf ("decltype\n");
  709.       break;
  710.     case DEMANGLE_COMPONENT_PACK_EXPANSION:
  711.       printf ("pack expansion\n");
  712.       break;
  713.     case DEMANGLE_COMPONENT_TLS_INIT:
  714.       printf ("tls init function\n");
  715.       break;
  716.     case DEMANGLE_COMPONENT_TLS_WRAPPER:
  717.       printf ("tls wrapper function\n");
  718.       break;
  719.     case DEMANGLE_COMPONENT_DEFAULT_ARG:
  720.       printf ("default argument %d\n", dc->u.s_unary_num.num);
  721.       d_dump (dc->u.s_unary_num.sub, indent+2);
  722.       return;
  723.     case DEMANGLE_COMPONENT_LAMBDA:
  724.       printf ("lambda %d\n", dc->u.s_unary_num.num);
  725.       d_dump (dc->u.s_unary_num.sub, indent+2);
  726.       return;
  727.     }
  728.  
  729.   d_dump (d_left (dc), indent + 2);
  730.   d_dump (d_right (dc), indent + 2);
  731. }
  732.  
  733. #endif /* CP_DEMANGLE_DEBUG */
  734.  
  735. /* Fill in a DEMANGLE_COMPONENT_NAME.  */
  736.  
  737. CP_STATIC_IF_GLIBCPP_V3
  738. int
  739. cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len)
  740. {
  741.   if (p == NULL || s == NULL || len == 0)
  742.     return 0;
  743.   p->type = DEMANGLE_COMPONENT_NAME;
  744.   p->u.s_name.s = s;
  745.   p->u.s_name.len = len;
  746.   return 1;
  747. }
  748.  
  749. /* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR.  */
  750.  
  751. CP_STATIC_IF_GLIBCPP_V3
  752. int
  753. cplus_demangle_fill_extended_operator (struct demangle_component *p, int args,
  754.                                        struct demangle_component *name)
  755. {
  756.   if (p == NULL || args < 0 || name == NULL)
  757.     return 0;
  758.   p->type = DEMANGLE_COMPONENT_EXTENDED_OPERATOR;
  759.   p->u.s_extended_operator.args = args;
  760.   p->u.s_extended_operator.name = name;
  761.   return 1;
  762. }
  763.  
  764. /* Fill in a DEMANGLE_COMPONENT_CTOR.  */
  765.  
  766. CP_STATIC_IF_GLIBCPP_V3
  767. int
  768. cplus_demangle_fill_ctor (struct demangle_component *p,
  769.                           enum gnu_v3_ctor_kinds kind,
  770.                           struct demangle_component *name)
  771. {
  772.   if (p == NULL
  773.       || name == NULL
  774.       || (int) kind < gnu_v3_complete_object_ctor
  775.       || (int) kind > gnu_v3_object_ctor_group)
  776.     return 0;
  777.   p->type = DEMANGLE_COMPONENT_CTOR;
  778.   p->u.s_ctor.kind = kind;
  779.   p->u.s_ctor.name = name;
  780.   return 1;
  781. }
  782.  
  783. /* Fill in a DEMANGLE_COMPONENT_DTOR.  */
  784.  
  785. CP_STATIC_IF_GLIBCPP_V3
  786. int
  787. cplus_demangle_fill_dtor (struct demangle_component *p,
  788.                           enum gnu_v3_dtor_kinds kind,
  789.                           struct demangle_component *name)
  790. {
  791.   if (p == NULL
  792.       || name == NULL
  793.       || (int) kind < gnu_v3_deleting_dtor
  794.       || (int) kind > gnu_v3_object_dtor_group)
  795.     return 0;
  796.   p->type = DEMANGLE_COMPONENT_DTOR;
  797.   p->u.s_dtor.kind = kind;
  798.   p->u.s_dtor.name = name;
  799.   return 1;
  800. }
  801.  
  802. /* Add a new component.  */
  803.  
  804. static struct demangle_component *
  805. d_make_empty (struct d_info *di)
  806. {
  807.   struct demangle_component *p;
  808.  
  809.   if (di->next_comp >= di->num_comps)
  810.     return NULL;
  811.   p = &di->comps[di->next_comp];
  812.   ++di->next_comp;
  813.   return p;
  814. }
  815.  
  816. /* Add a new generic component.  */
  817.  
  818. static struct demangle_component *
  819. d_make_comp (struct d_info *di, enum demangle_component_type type,
  820.              struct demangle_component *left,
  821.              struct demangle_component *right)
  822. {
  823.   struct demangle_component *p;
  824.  
  825.   /* We check for errors here.  A typical error would be a NULL return
  826.      from a subroutine.  We catch those here, and return NULL
  827.      upward.  */
  828.   switch (type)
  829.     {
  830.       /* These types require two parameters.  */
  831.     case DEMANGLE_COMPONENT_QUAL_NAME:
  832.     case DEMANGLE_COMPONENT_LOCAL_NAME:
  833.     case DEMANGLE_COMPONENT_TYPED_NAME:
  834.     case DEMANGLE_COMPONENT_TAGGED_NAME:
  835.     case DEMANGLE_COMPONENT_TEMPLATE:
  836.     case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
  837.     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  838.     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  839.     case DEMANGLE_COMPONENT_UNARY:
  840.     case DEMANGLE_COMPONENT_BINARY:
  841.     case DEMANGLE_COMPONENT_BINARY_ARGS:
  842.     case DEMANGLE_COMPONENT_TRINARY:
  843.     case DEMANGLE_COMPONENT_TRINARY_ARG1:
  844.     case DEMANGLE_COMPONENT_LITERAL:
  845.     case DEMANGLE_COMPONENT_LITERAL_NEG:
  846.     case DEMANGLE_COMPONENT_COMPOUND_NAME:
  847.     case DEMANGLE_COMPONENT_VECTOR_TYPE:
  848.     case DEMANGLE_COMPONENT_CLONE:
  849.       if (left == NULL || right == NULL)
  850.         return NULL;
  851.       break;
  852.  
  853.       /* These types only require one parameter.  */
  854.     case DEMANGLE_COMPONENT_VTABLE:
  855.     case DEMANGLE_COMPONENT_VTT:
  856.     case DEMANGLE_COMPONENT_TYPEINFO:
  857.     case DEMANGLE_COMPONENT_TYPEINFO_NAME:
  858.     case DEMANGLE_COMPONENT_TYPEINFO_FN:
  859.     case DEMANGLE_COMPONENT_THUNK:
  860.     case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
  861.     case DEMANGLE_COMPONENT_COVARIANT_THUNK:
  862.     case DEMANGLE_COMPONENT_JAVA_CLASS:
  863.     case DEMANGLE_COMPONENT_GUARD:
  864.     case DEMANGLE_COMPONENT_TLS_INIT:
  865.     case DEMANGLE_COMPONENT_TLS_WRAPPER:
  866.     case DEMANGLE_COMPONENT_REFTEMP:
  867.     case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
  868.     case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
  869.     case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
  870.     case DEMANGLE_COMPONENT_POINTER:
  871.     case DEMANGLE_COMPONENT_REFERENCE:
  872.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
  873.     case DEMANGLE_COMPONENT_COMPLEX:
  874.     case DEMANGLE_COMPONENT_IMAGINARY:
  875.     case DEMANGLE_COMPONENT_VENDOR_TYPE:
  876.     case DEMANGLE_COMPONENT_CAST:
  877.     case DEMANGLE_COMPONENT_JAVA_RESOURCE:
  878.     case DEMANGLE_COMPONENT_DECLTYPE:
  879.     case DEMANGLE_COMPONENT_PACK_EXPANSION:
  880.     case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
  881.     case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
  882.     case DEMANGLE_COMPONENT_NULLARY:
  883.     case DEMANGLE_COMPONENT_TRINARY_ARG2:
  884.       if (left == NULL)
  885.         return NULL;
  886.       break;
  887.  
  888.       /* This needs a right parameter, but the left parameter can be
  889.          empty.  */
  890.     case DEMANGLE_COMPONENT_ARRAY_TYPE:
  891.     case DEMANGLE_COMPONENT_INITIALIZER_LIST:
  892.       if (right == NULL)
  893.         return NULL;
  894.       break;
  895.  
  896.       /* These are allowed to have no parameters--in some cases they
  897.          will be filled in later.  */
  898.     case DEMANGLE_COMPONENT_FUNCTION_TYPE:
  899.     case DEMANGLE_COMPONENT_RESTRICT:
  900.     case DEMANGLE_COMPONENT_VOLATILE:
  901.     case DEMANGLE_COMPONENT_CONST:
  902.     case DEMANGLE_COMPONENT_RESTRICT_THIS:
  903.     case DEMANGLE_COMPONENT_VOLATILE_THIS:
  904.     case DEMANGLE_COMPONENT_CONST_THIS:
  905.     case DEMANGLE_COMPONENT_REFERENCE_THIS:
  906.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  907.     case DEMANGLE_COMPONENT_ARGLIST:
  908.     case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
  909.       break;
  910.  
  911.       /* Other types should not be seen here.  */
  912.     default:
  913.       return NULL;
  914.     }
  915.  
  916.   p = d_make_empty (di);
  917.   if (p != NULL)
  918.     {
  919.       p->type = type;
  920.       p->u.s_binary.left = left;
  921.       p->u.s_binary.right = right;
  922.     }
  923.   return p;
  924. }
  925.  
  926. /* Add a new demangle mangled name component.  */
  927.  
  928. static struct demangle_component *
  929. d_make_demangle_mangled_name (struct d_info *di, const char *s)
  930. {
  931.   if (d_peek_char (di) != '_' || d_peek_next_char (di) != 'Z')
  932.     return d_make_name (di, s, strlen (s));
  933.   d_advance (di, 2);
  934.   return d_encoding (di, 0);
  935. }
  936.  
  937. /* Add a new name component.  */
  938.  
  939. static struct demangle_component *
  940. d_make_name (struct d_info *di, const char *s, int len)
  941. {
  942.   struct demangle_component *p;
  943.  
  944.   p = d_make_empty (di);
  945.   if (! cplus_demangle_fill_name (p, s, len))
  946.     return NULL;
  947.   return p;
  948. }
  949.  
  950. /* Add a new builtin type component.  */
  951.  
  952. static struct demangle_component *
  953. d_make_builtin_type (struct d_info *di,
  954.                      const struct demangle_builtin_type_info *type)
  955. {
  956.   struct demangle_component *p;
  957.  
  958.   if (type == NULL)
  959.     return NULL;
  960.   p = d_make_empty (di);
  961.   if (p != NULL)
  962.     {
  963.       p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
  964.       p->u.s_builtin.type = type;
  965.     }
  966.   return p;
  967. }
  968.  
  969. /* Add a new operator component.  */
  970.  
  971. static struct demangle_component *
  972. d_make_operator (struct d_info *di, const struct demangle_operator_info *op)
  973. {
  974.   struct demangle_component *p;
  975.  
  976.   p = d_make_empty (di);
  977.   if (p != NULL)
  978.     {
  979.       p->type = DEMANGLE_COMPONENT_OPERATOR;
  980.       p->u.s_operator.op = op;
  981.     }
  982.   return p;
  983. }
  984.  
  985. /* Add a new extended operator component.  */
  986.  
  987. static struct demangle_component *
  988. d_make_extended_operator (struct d_info *di, int args,
  989.                           struct demangle_component *name)
  990. {
  991.   struct demangle_component *p;
  992.  
  993.   p = d_make_empty (di);
  994.   if (! cplus_demangle_fill_extended_operator (p, args, name))
  995.     return NULL;
  996.   return p;
  997. }
  998.  
  999. static struct demangle_component *
  1000. d_make_default_arg (struct d_info *di, int num,
  1001.                     struct demangle_component *sub)
  1002. {
  1003.   struct demangle_component *p = d_make_empty (di);
  1004.   if (p)
  1005.     {
  1006.       p->type = DEMANGLE_COMPONENT_DEFAULT_ARG;
  1007.       p->u.s_unary_num.num = num;
  1008.       p->u.s_unary_num.sub = sub;
  1009.     }
  1010.   return p;
  1011. }
  1012.  
  1013. /* Add a new constructor component.  */
  1014.  
  1015. static struct demangle_component *
  1016. d_make_ctor (struct d_info *di, enum gnu_v3_ctor_kinds kind,
  1017.              struct demangle_component *name)
  1018. {
  1019.   struct demangle_component *p;
  1020.  
  1021.   p = d_make_empty (di);
  1022.   if (! cplus_demangle_fill_ctor (p, kind, name))
  1023.     return NULL;
  1024.   return p;
  1025. }
  1026.  
  1027. /* Add a new destructor component.  */
  1028.  
  1029. static struct demangle_component *
  1030. d_make_dtor (struct d_info *di, enum gnu_v3_dtor_kinds kind,
  1031.              struct demangle_component *name)
  1032. {
  1033.   struct demangle_component *p;
  1034.  
  1035.   p = d_make_empty (di);
  1036.   if (! cplus_demangle_fill_dtor (p, kind, name))
  1037.     return NULL;
  1038.   return p;
  1039. }
  1040.  
  1041. /* Add a new template parameter.  */
  1042.  
  1043. static struct demangle_component *
  1044. d_make_template_param (struct d_info *di, long i)
  1045. {
  1046.   struct demangle_component *p;
  1047.  
  1048.   p = d_make_empty (di);
  1049.   if (p != NULL)
  1050.     {
  1051.       p->type = DEMANGLE_COMPONENT_TEMPLATE_PARAM;
  1052.       p->u.s_number.number = i;
  1053.     }
  1054.   return p;
  1055. }
  1056.  
  1057. /* Add a new function parameter.  */
  1058.  
  1059. static struct demangle_component *
  1060. d_make_function_param (struct d_info *di, long i)
  1061. {
  1062.   struct demangle_component *p;
  1063.  
  1064.   p = d_make_empty (di);
  1065.   if (p != NULL)
  1066.     {
  1067.       p->type = DEMANGLE_COMPONENT_FUNCTION_PARAM;
  1068.       p->u.s_number.number = i;
  1069.     }
  1070.   return p;
  1071. }
  1072.  
  1073. /* Add a new standard substitution component.  */
  1074.  
  1075. static struct demangle_component *
  1076. d_make_sub (struct d_info *di, const char *name, int len)
  1077. {
  1078.   struct demangle_component *p;
  1079.  
  1080.   p = d_make_empty (di);
  1081.   if (p != NULL)
  1082.     {
  1083.       p->type = DEMANGLE_COMPONENT_SUB_STD;
  1084.       p->u.s_string.string = name;
  1085.       p->u.s_string.len = len;
  1086.     }
  1087.   return p;
  1088. }
  1089.  
  1090. /* <mangled-name> ::= _Z <encoding> [<clone-suffix>]*
  1091.  
  1092.    TOP_LEVEL is non-zero when called at the top level.  */
  1093.  
  1094. CP_STATIC_IF_GLIBCPP_V3
  1095. struct demangle_component *
  1096. cplus_demangle_mangled_name (struct d_info *di, int top_level)
  1097. {
  1098.   struct demangle_component *p;
  1099.  
  1100.   if (! d_check_char (di, '_')
  1101.       /* Allow missing _ if not at toplevel to work around a
  1102.          bug in G++ abi-version=2 mangling; see the comment in
  1103.          write_template_arg.  */
  1104.       && top_level)
  1105.     return NULL;
  1106.   if (! d_check_char (di, 'Z'))
  1107.     return NULL;
  1108.   p = d_encoding (di, top_level);
  1109.  
  1110.   /* If at top level and parsing parameters, check for a clone
  1111.      suffix.  */
  1112.   if (top_level && (di->options & DMGL_PARAMS) != 0)
  1113.     while (d_peek_char (di) == '.'
  1114.            && (IS_LOWER (d_peek_next_char (di))
  1115.                || d_peek_next_char (di) == '_'
  1116.                || IS_DIGIT (d_peek_next_char (di))))
  1117.       p = d_clone_suffix (di, p);
  1118.  
  1119.   return p;
  1120. }
  1121.  
  1122. /* Return whether a function should have a return type.  The argument
  1123.    is the function name, which may be qualified in various ways.  The
  1124.    rules are that template functions have return types with some
  1125.    exceptions, function types which are not part of a function name
  1126.    mangling have return types with some exceptions, and non-template
  1127.    function names do not have return types.  The exceptions are that
  1128.    constructors, destructors, and conversion operators do not have
  1129.    return types.  */
  1130.  
  1131. static int
  1132. has_return_type (struct demangle_component *dc)
  1133. {
  1134.   if (dc == NULL)
  1135.     return 0;
  1136.   switch (dc->type)
  1137.     {
  1138.     default:
  1139.       return 0;
  1140.     case DEMANGLE_COMPONENT_TEMPLATE:
  1141.       return ! is_ctor_dtor_or_conversion (d_left (dc));
  1142.     case DEMANGLE_COMPONENT_RESTRICT_THIS:
  1143.     case DEMANGLE_COMPONENT_VOLATILE_THIS:
  1144.     case DEMANGLE_COMPONENT_CONST_THIS:
  1145.     case DEMANGLE_COMPONENT_REFERENCE_THIS:
  1146.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  1147.       return has_return_type (d_left (dc));
  1148.     }
  1149. }
  1150.  
  1151. /* Return whether a name is a constructor, a destructor, or a
  1152.    conversion operator.  */
  1153.  
  1154. static int
  1155. is_ctor_dtor_or_conversion (struct demangle_component *dc)
  1156. {
  1157.   if (dc == NULL)
  1158.     return 0;
  1159.   switch (dc->type)
  1160.     {
  1161.     default:
  1162.       return 0;
  1163.     case DEMANGLE_COMPONENT_QUAL_NAME:
  1164.     case DEMANGLE_COMPONENT_LOCAL_NAME:
  1165.       return is_ctor_dtor_or_conversion (d_right (dc));
  1166.     case DEMANGLE_COMPONENT_CTOR:
  1167.     case DEMANGLE_COMPONENT_DTOR:
  1168.     case DEMANGLE_COMPONENT_CAST:
  1169.       return 1;
  1170.     }
  1171. }
  1172.  
  1173. /* <encoding> ::= <(function) name> <bare-function-type>
  1174.               ::= <(data) name>
  1175.               ::= <special-name>
  1176.  
  1177.    TOP_LEVEL is non-zero when called at the top level, in which case
  1178.    if DMGL_PARAMS is not set we do not demangle the function
  1179.    parameters.  We only set this at the top level, because otherwise
  1180.    we would not correctly demangle names in local scopes.  */
  1181.  
  1182. static struct demangle_component *
  1183. d_encoding (struct d_info *di, int top_level)
  1184. {
  1185.   char peek = d_peek_char (di);
  1186.  
  1187.   if (peek == 'G' || peek == 'T')
  1188.     return d_special_name (di);
  1189.   else
  1190.     {
  1191.       struct demangle_component *dc;
  1192.  
  1193.       dc = d_name (di);
  1194.  
  1195.       if (dc != NULL && top_level && (di->options & DMGL_PARAMS) == 0)
  1196.         {
  1197.           /* Strip off any initial CV-qualifiers, as they really apply
  1198.              to the `this' parameter, and they were not output by the
  1199.              v2 demangler without DMGL_PARAMS.  */
  1200.           while (dc->type == DEMANGLE_COMPONENT_RESTRICT_THIS
  1201.                  || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS
  1202.                  || dc->type == DEMANGLE_COMPONENT_CONST_THIS
  1203.                  || dc->type == DEMANGLE_COMPONENT_REFERENCE_THIS
  1204.                  || dc->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
  1205.             dc = d_left (dc);
  1206.  
  1207.           /* If the top level is a DEMANGLE_COMPONENT_LOCAL_NAME, then
  1208.              there may be CV-qualifiers on its right argument which
  1209.              really apply here; this happens when parsing a class
  1210.              which is local to a function.  */
  1211.           if (dc->type == DEMANGLE_COMPONENT_LOCAL_NAME)
  1212.             {
  1213.               struct demangle_component *dcr;
  1214.  
  1215.               dcr = d_right (dc);
  1216.               while (dcr->type == DEMANGLE_COMPONENT_RESTRICT_THIS
  1217.                      || dcr->type == DEMANGLE_COMPONENT_VOLATILE_THIS
  1218.                      || dcr->type == DEMANGLE_COMPONENT_CONST_THIS
  1219.                      || dcr->type == DEMANGLE_COMPONENT_REFERENCE_THIS
  1220.                      || dcr->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
  1221.                 dcr = d_left (dcr);
  1222.               dc->u.s_binary.right = dcr;
  1223.             }
  1224.  
  1225.           return dc;
  1226.         }
  1227.  
  1228.       peek = d_peek_char (di);
  1229.       if (dc == NULL || peek == '\0' || peek == 'E')
  1230.         return dc;
  1231.       return d_make_comp (di, DEMANGLE_COMPONENT_TYPED_NAME, dc,
  1232.                           d_bare_function_type (di, has_return_type (dc)));
  1233.     }
  1234. }
  1235.  
  1236. /* <tagged-name> ::= <name> B <source-name> */
  1237.  
  1238. static struct demangle_component *
  1239. d_abi_tags (struct d_info *di, struct demangle_component *dc)
  1240. {
  1241.   char peek;
  1242.   while (peek = d_peek_char (di),
  1243.          peek == 'B')
  1244.     {
  1245.       struct demangle_component *tag;
  1246.       d_advance (di, 1);
  1247.       tag = d_source_name (di);
  1248.       dc = d_make_comp (di, DEMANGLE_COMPONENT_TAGGED_NAME, dc, tag);
  1249.     }
  1250.   return dc;
  1251. }
  1252.  
  1253. /* <name> ::= <nested-name>
  1254.           ::= <unscoped-name>
  1255.           ::= <unscoped-template-name> <template-args>
  1256.           ::= <local-name>
  1257.  
  1258.    <unscoped-name> ::= <unqualified-name>
  1259.                    ::= St <unqualified-name>
  1260.  
  1261.    <unscoped-template-name> ::= <unscoped-name>
  1262.                             ::= <substitution>
  1263. */
  1264.  
  1265. static struct demangle_component *
  1266. d_name (struct d_info *di)
  1267. {
  1268.   char peek = d_peek_char (di);
  1269.   struct demangle_component *dc;
  1270.  
  1271.   switch (peek)
  1272.     {
  1273.     case 'N':
  1274.       return d_nested_name (di);
  1275.  
  1276.     case 'Z':
  1277.       return d_local_name (di);
  1278.  
  1279.     case 'L':
  1280.     case 'U':
  1281.       return d_unqualified_name (di);
  1282.  
  1283.     case 'S':
  1284.       {
  1285.         int subst;
  1286.  
  1287.         if (d_peek_next_char (di) != 't')
  1288.           {
  1289.             dc = d_substitution (di, 0);
  1290.             subst = 1;
  1291.           }
  1292.         else
  1293.           {
  1294.             d_advance (di, 2);
  1295.             dc = d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME,
  1296.                               d_make_name (di, "std", 3),
  1297.                               d_unqualified_name (di));
  1298.             di->expansion += 3;
  1299.             subst = 0;
  1300.           }
  1301.  
  1302.         if (d_peek_char (di) != 'I')
  1303.           {
  1304.             /* The grammar does not permit this case to occur if we
  1305.                called d_substitution() above (i.e., subst == 1).  We
  1306.                don't bother to check.  */
  1307.           }
  1308.         else
  1309.           {
  1310.             /* This is <template-args>, which means that we just saw
  1311.                <unscoped-template-name>, which is a substitution
  1312.                candidate if we didn't just get it from a
  1313.                substitution.  */
  1314.             if (! subst)
  1315.               {
  1316.                 if (! d_add_substitution (di, dc))
  1317.                   return NULL;
  1318.               }
  1319.             dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc,
  1320.                               d_template_args (di));
  1321.           }
  1322.  
  1323.         return dc;
  1324.       }
  1325.  
  1326.     default:
  1327.       dc = d_unqualified_name (di);
  1328.       if (d_peek_char (di) == 'I')
  1329.         {
  1330.           /* This is <template-args>, which means that we just saw
  1331.              <unscoped-template-name>, which is a substitution
  1332.              candidate.  */
  1333.           if (! d_add_substitution (di, dc))
  1334.             return NULL;
  1335.           dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc,
  1336.                             d_template_args (di));
  1337.         }
  1338.       return dc;
  1339.     }
  1340. }
  1341.  
  1342. /* <nested-name> ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E
  1343.                  ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix> <template-args> E
  1344. */
  1345.  
  1346. static struct demangle_component *
  1347. d_nested_name (struct d_info *di)
  1348. {
  1349.   struct demangle_component *ret;
  1350.   struct demangle_component **pret;
  1351.   struct demangle_component *rqual;
  1352.  
  1353.   if (! d_check_char (di, 'N'))
  1354.     return NULL;
  1355.  
  1356.   pret = d_cv_qualifiers (di, &ret, 1);
  1357.   if (pret == NULL)
  1358.     return NULL;
  1359.  
  1360.   /* Parse the ref-qualifier now and then attach it
  1361.      once we have something to attach it to.  */
  1362.   rqual = d_ref_qualifier (di, NULL);
  1363.  
  1364.   *pret = d_prefix (di);
  1365.   if (*pret == NULL)
  1366.     return NULL;
  1367.  
  1368.   if (rqual)
  1369.     {
  1370.       d_left (rqual) = ret;
  1371.       ret = rqual;
  1372.     }
  1373.  
  1374.   if (! d_check_char (di, 'E'))
  1375.     return NULL;
  1376.  
  1377.   return ret;
  1378. }
  1379.  
  1380. /* <prefix> ::= <prefix> <unqualified-name>
  1381.             ::= <template-prefix> <template-args>
  1382.             ::= <template-param>
  1383.             ::= <decltype>
  1384.             ::=
  1385.             ::= <substitution>
  1386.  
  1387.    <template-prefix> ::= <prefix> <(template) unqualified-name>
  1388.                      ::= <template-param>
  1389.                      ::= <substitution>
  1390. */
  1391.  
  1392. static struct demangle_component *
  1393. d_prefix (struct d_info *di)
  1394. {
  1395.   struct demangle_component *ret = NULL;
  1396.  
  1397.   while (1)
  1398.     {
  1399.       char peek;
  1400.       enum demangle_component_type comb_type;
  1401.       struct demangle_component *dc;
  1402.  
  1403.       peek = d_peek_char (di);
  1404.       if (peek == '\0')
  1405.         return NULL;
  1406.  
  1407.       /* The older code accepts a <local-name> here, but I don't see
  1408.          that in the grammar.  The older code does not accept a
  1409.          <template-param> here.  */
  1410.  
  1411.       comb_type = DEMANGLE_COMPONENT_QUAL_NAME;
  1412.       if (peek == 'D')
  1413.         {
  1414.           char peek2 = d_peek_next_char (di);
  1415.           if (peek2 == 'T' || peek2 == 't')
  1416.             /* Decltype.  */
  1417.             dc = cplus_demangle_type (di);
  1418.           else
  1419.             /* Destructor name.  */
  1420.             dc = d_unqualified_name (di);
  1421.         }
  1422.       else if (IS_DIGIT (peek)
  1423.           || IS_LOWER (peek)
  1424.           || peek == 'C'
  1425.           || peek == 'U'
  1426.           || peek == 'L')
  1427.         dc = d_unqualified_name (di);
  1428.       else if (peek == 'S')
  1429.         dc = d_substitution (di, 1);
  1430.       else if (peek == 'I')
  1431.         {
  1432.           if (ret == NULL)
  1433.             return NULL;
  1434.           comb_type = DEMANGLE_COMPONENT_TEMPLATE;
  1435.           dc = d_template_args (di);
  1436.         }
  1437.       else if (peek == 'T')
  1438.         dc = d_template_param (di);
  1439.       else if (peek == 'E')
  1440.         return ret;
  1441.       else if (peek == 'M')
  1442.         {
  1443.           /* Initializer scope for a lambda.  We don't need to represent
  1444.              this; the normal code will just treat the variable as a type
  1445.              scope, which gives appropriate output.  */
  1446.           if (ret == NULL)
  1447.             return NULL;
  1448.           d_advance (di, 1);
  1449.           continue;
  1450.         }
  1451.       else
  1452.         return NULL;
  1453.  
  1454.       if (ret == NULL)
  1455.         ret = dc;
  1456.       else
  1457.         ret = d_make_comp (di, comb_type, ret, dc);
  1458.  
  1459.       if (peek != 'S' && d_peek_char (di) != 'E')
  1460.         {
  1461.           if (! d_add_substitution (di, ret))
  1462.             return NULL;
  1463.         }
  1464.     }
  1465. }
  1466.  
  1467. /* <unqualified-name> ::= <operator-name>
  1468.                       ::= <ctor-dtor-name>
  1469.                       ::= <source-name>
  1470.                       ::= <local-source-name>
  1471.  
  1472.     <local-source-name> ::= L <source-name> <discriminator>
  1473. */
  1474.  
  1475. static struct demangle_component *
  1476. d_unqualified_name (struct d_info *di)
  1477. {
  1478.   struct demangle_component *ret;
  1479.   char peek;
  1480.  
  1481.   peek = d_peek_char (di);
  1482.   if (IS_DIGIT (peek))
  1483.     ret = d_source_name (di);
  1484.   else if (IS_LOWER (peek))
  1485.     {
  1486.       ret = d_operator_name (di);
  1487.       if (ret != NULL && ret->type == DEMANGLE_COMPONENT_OPERATOR)
  1488.         {
  1489.           di->expansion += sizeof "operator" + ret->u.s_operator.op->len - 2;
  1490.           if (!strcmp (ret->u.s_operator.op->code, "li"))
  1491.             ret = d_make_comp (di, DEMANGLE_COMPONENT_UNARY, ret,
  1492.                                d_source_name (di));
  1493.         }
  1494.     }
  1495.   else if (peek == 'C' || peek == 'D')
  1496.     ret = d_ctor_dtor_name (di);
  1497.   else if (peek == 'L')
  1498.     {
  1499.       d_advance (di, 1);
  1500.  
  1501.       ret = d_source_name (di);
  1502.       if (ret == NULL)
  1503.         return NULL;
  1504.       if (! d_discriminator (di))
  1505.         return NULL;
  1506.     }
  1507.   else if (peek == 'U')
  1508.     {
  1509.       switch (d_peek_next_char (di))
  1510.         {
  1511.         case 'l':
  1512.           ret = d_lambda (di);
  1513.           break;
  1514.         case 't':
  1515.           ret = d_unnamed_type (di);
  1516.           break;
  1517.         default:
  1518.           return NULL;
  1519.         }
  1520.     }
  1521.   else
  1522.     return NULL;
  1523.  
  1524.   if (d_peek_char (di) == 'B')
  1525.     ret = d_abi_tags (di, ret);
  1526.   return ret;
  1527. }
  1528.  
  1529. /* <source-name> ::= <(positive length) number> <identifier>  */
  1530.  
  1531. static struct demangle_component *
  1532. d_source_name (struct d_info *di)
  1533. {
  1534.   long len;
  1535.   struct demangle_component *ret;
  1536.  
  1537.   len = d_number (di);
  1538.   if (len <= 0)
  1539.     return NULL;
  1540.   ret = d_identifier (di, len);
  1541.   di->last_name = ret;
  1542.   return ret;
  1543. }
  1544.  
  1545. /* number ::= [n] <(non-negative decimal integer)>  */
  1546.  
  1547. static long
  1548. d_number (struct d_info *di)
  1549. {
  1550.   int negative;
  1551.   char peek;
  1552.   long ret;
  1553.  
  1554.   negative = 0;
  1555.   peek = d_peek_char (di);
  1556.   if (peek == 'n')
  1557.     {
  1558.       negative = 1;
  1559.       d_advance (di, 1);
  1560.       peek = d_peek_char (di);
  1561.     }
  1562.  
  1563.   ret = 0;
  1564.   while (1)
  1565.     {
  1566.       if (! IS_DIGIT (peek))
  1567.         {
  1568.           if (negative)
  1569.             ret = - ret;
  1570.           return ret;
  1571.         }
  1572.       ret = ret * 10 + peek - '0';
  1573.       d_advance (di, 1);
  1574.       peek = d_peek_char (di);
  1575.     }
  1576. }
  1577.  
  1578. /* Like d_number, but returns a demangle_component.  */
  1579.  
  1580. static struct demangle_component *
  1581. d_number_component (struct d_info *di)
  1582. {
  1583.   struct demangle_component *ret = d_make_empty (di);
  1584.   if (ret)
  1585.     {
  1586.       ret->type = DEMANGLE_COMPONENT_NUMBER;
  1587.       ret->u.s_number.number = d_number (di);
  1588.     }
  1589.   return ret;
  1590. }
  1591.  
  1592. /* identifier ::= <(unqualified source code identifier)>  */
  1593.  
  1594. static struct demangle_component *
  1595. d_identifier (struct d_info *di, int len)
  1596. {
  1597.   const char *name;
  1598.  
  1599.   name = d_str (di);
  1600.  
  1601.   if (di->send - name < len)
  1602.     return NULL;
  1603.  
  1604.   d_advance (di, len);
  1605.  
  1606.   /* A Java mangled name may have a trailing '$' if it is a C++
  1607.      keyword.  This '$' is not included in the length count.  We just
  1608.      ignore the '$'.  */
  1609.   if ((di->options & DMGL_JAVA) != 0
  1610.       && d_peek_char (di) == '$')
  1611.     d_advance (di, 1);
  1612.  
  1613.   /* Look for something which looks like a gcc encoding of an
  1614.      anonymous namespace, and replace it with a more user friendly
  1615.      name.  */
  1616.   if (len >= (int) ANONYMOUS_NAMESPACE_PREFIX_LEN + 2
  1617.       && memcmp (name, ANONYMOUS_NAMESPACE_PREFIX,
  1618.                  ANONYMOUS_NAMESPACE_PREFIX_LEN) == 0)
  1619.     {
  1620.       const char *s;
  1621.  
  1622.       s = name + ANONYMOUS_NAMESPACE_PREFIX_LEN;
  1623.       if ((*s == '.' || *s == '_' || *s == '$')
  1624.           && s[1] == 'N')
  1625.         {
  1626.           di->expansion -= len - sizeof "(anonymous namespace)";
  1627.           return d_make_name (di, "(anonymous namespace)",
  1628.                               sizeof "(anonymous namespace)" - 1);
  1629.         }
  1630.     }
  1631.  
  1632.   return d_make_name (di, name, len);
  1633. }
  1634.  
  1635. /* operator_name ::= many different two character encodings.
  1636.                  ::= cv <type>
  1637.                  ::= v <digit> <source-name>
  1638.  
  1639.    This list is sorted for binary search.  */
  1640.  
  1641. #define NL(s) s, (sizeof s) - 1
  1642.  
  1643. CP_STATIC_IF_GLIBCPP_V3
  1644. const struct demangle_operator_info cplus_demangle_operators[] =
  1645. {
  1646.   { "aN", NL ("&="),        2 },
  1647.   { "aS", NL ("="),         2 },
  1648.   { "aa", NL ("&&"),        2 },
  1649.   { "ad", NL ("&"),         1 },
  1650.   { "an", NL ("&"),         2 },
  1651.   { "at", NL ("alignof "),   1 },
  1652.   { "az", NL ("alignof "),   1 },
  1653.   { "cc", NL ("const_cast"), 2 },
  1654.   { "cl", NL ("()"),        2 },
  1655.   { "cm", NL (","),         2 },
  1656.   { "co", NL ("~"),         1 },
  1657.   { "dV", NL ("/="),        2 },
  1658.   { "da", NL ("delete[] "), 1 },
  1659.   { "dc", NL ("dynamic_cast"), 2 },
  1660.   { "de", NL ("*"),         1 },
  1661.   { "dl", NL ("delete "),   1 },
  1662.   { "ds", NL (".*"),        2 },
  1663.   { "dt", NL ("."),         2 },
  1664.   { "dv", NL ("/"),         2 },
  1665.   { "eO", NL ("^="),        2 },
  1666.   { "eo", NL ("^"),         2 },
  1667.   { "eq", NL ("=="),        2 },
  1668.   { "ge", NL (">="),        2 },
  1669.   { "gs", NL ("::"),        1 },
  1670.   { "gt", NL (">"),         2 },
  1671.   { "ix", NL ("[]"),        2 },
  1672.   { "lS", NL ("<<="),       2 },
  1673.   { "le", NL ("<="),        2 },
  1674.   { "li", NL ("operator\"\" "), 1 },
  1675.   { "ls", NL ("<<"),        2 },
  1676.   { "lt", NL ("<"),         2 },
  1677.   { "mI", NL ("-="),        2 },
  1678.   { "mL", NL ("*="),        2 },
  1679.   { "mi", NL ("-"),         2 },
  1680.   { "ml", NL ("*"),         2 },
  1681.   { "mm", NL ("--"),        1 },
  1682.   { "na", NL ("new[]"),     3 },
  1683.   { "ne", NL ("!="),        2 },
  1684.   { "ng", NL ("-"),         1 },
  1685.   { "nt", NL ("!"),         1 },
  1686.   { "nw", NL ("new"),       3 },
  1687.   { "oR", NL ("|="),        2 },
  1688.   { "oo", NL ("||"),        2 },
  1689.   { "or", NL ("|"),         2 },
  1690.   { "pL", NL ("+="),        2 },
  1691.   { "pl", NL ("+"),         2 },
  1692.   { "pm", NL ("->*"),       2 },
  1693.   { "pp", NL ("++"),        1 },
  1694.   { "ps", NL ("+"),         1 },
  1695.   { "pt", NL ("->"),        2 },
  1696.   { "qu", NL ("?"),         3 },
  1697.   { "rM", NL ("%="),        2 },
  1698.   { "rS", NL (">>="),       2 },
  1699.   { "rc", NL ("reinterpret_cast"), 2 },
  1700.   { "rm", NL ("%"),         2 },
  1701.   { "rs", NL (">>"),        2 },
  1702.   { "sc", NL ("static_cast"), 2 },
  1703.   { "st", NL ("sizeof "),   1 },
  1704.   { "sz", NL ("sizeof "),   1 },
  1705.   { "tr", NL ("throw"),     0 },
  1706.   { "tw", NL ("throw "),    1 },
  1707.   { NULL, NULL, 0,          0 }
  1708. };
  1709.  
  1710. static struct demangle_component *
  1711. d_operator_name (struct d_info *di)
  1712. {
  1713.   char c1;
  1714.   char c2;
  1715.  
  1716.   c1 = d_next_char (di);
  1717.   c2 = d_next_char (di);
  1718.   if (c1 == 'v' && IS_DIGIT (c2))
  1719.     return d_make_extended_operator (di, c2 - '0', d_source_name (di));
  1720.   else if (c1 == 'c' && c2 == 'v')
  1721.     return d_make_comp (di, DEMANGLE_COMPONENT_CAST,
  1722.                         cplus_demangle_type (di), NULL);
  1723.   else
  1724.     {
  1725.       /* LOW is the inclusive lower bound.  */
  1726.       int low = 0;
  1727.       /* HIGH is the exclusive upper bound.  We subtract one to ignore
  1728.          the sentinel at the end of the array.  */
  1729.       int high = ((sizeof (cplus_demangle_operators)
  1730.                    / sizeof (cplus_demangle_operators[0]))
  1731.                   - 1);
  1732.  
  1733.       while (1)
  1734.         {
  1735.           int i;
  1736.           const struct demangle_operator_info *p;
  1737.  
  1738.           i = low + (high - low) / 2;
  1739.           p = cplus_demangle_operators + i;
  1740.  
  1741.           if (c1 == p->code[0] && c2 == p->code[1])
  1742.             return d_make_operator (di, p);
  1743.  
  1744.           if (c1 < p->code[0] || (c1 == p->code[0] && c2 < p->code[1]))
  1745.             high = i;
  1746.           else
  1747.             low = i + 1;
  1748.           if (low == high)
  1749.             return NULL;
  1750.         }
  1751.     }
  1752. }
  1753.  
  1754. static struct demangle_component *
  1755. d_make_character (struct d_info *di, int c)
  1756. {
  1757.   struct demangle_component *p;
  1758.   p = d_make_empty (di);
  1759.   if (p != NULL)
  1760.     {
  1761.       p->type = DEMANGLE_COMPONENT_CHARACTER;
  1762.       p->u.s_character.character = c;
  1763.     }
  1764.   return p;
  1765. }
  1766.  
  1767. static struct demangle_component *
  1768. d_java_resource (struct d_info *di)
  1769. {
  1770.   struct demangle_component *p = NULL;
  1771.   struct demangle_component *next = NULL;
  1772.   long len, i;
  1773.   char c;
  1774.   const char *str;
  1775.  
  1776.   len = d_number (di);
  1777.   if (len <= 1)
  1778.     return NULL;
  1779.  
  1780.   /* Eat the leading '_'.  */
  1781.   if (d_next_char (di) != '_')
  1782.     return NULL;
  1783.   len--;
  1784.  
  1785.   str = d_str (di);
  1786.   i = 0;
  1787.  
  1788.   while (len > 0)
  1789.     {
  1790.       c = str[i];
  1791.       if (!c)
  1792.         return NULL;
  1793.  
  1794.       /* Each chunk is either a '$' escape...  */
  1795.       if (c == '$')
  1796.         {
  1797.           i++;
  1798.           switch (str[i++])
  1799.             {
  1800.             case 'S':
  1801.               c = '/';
  1802.               break;
  1803.             case '_':
  1804.               c = '.';
  1805.               break;
  1806.             case '$':
  1807.               c = '$';
  1808.               break;
  1809.             default:
  1810.               return NULL;
  1811.             }
  1812.           next = d_make_character (di, c);
  1813.           d_advance (di, i);
  1814.           str = d_str (di);
  1815.           len -= i;
  1816.           i = 0;
  1817.           if (next == NULL)
  1818.             return NULL;
  1819.         }
  1820.       /* ... or a sequence of characters.  */
  1821.       else
  1822.         {
  1823.           while (i < len && str[i] && str[i] != '$')
  1824.             i++;
  1825.  
  1826.           next = d_make_name (di, str, i);
  1827.           d_advance (di, i);
  1828.           str = d_str (di);
  1829.           len -= i;
  1830.           i = 0;
  1831.           if (next == NULL)
  1832.             return NULL;
  1833.         }
  1834.  
  1835.       if (p == NULL)
  1836.         p = next;
  1837.       else
  1838.         {
  1839.           p = d_make_comp (di, DEMANGLE_COMPONENT_COMPOUND_NAME, p, next);
  1840.           if (p == NULL)
  1841.             return NULL;
  1842.         }
  1843.     }
  1844.  
  1845.   p = d_make_comp (di, DEMANGLE_COMPONENT_JAVA_RESOURCE, p, NULL);
  1846.  
  1847.   return p;
  1848. }
  1849.  
  1850. /* <special-name> ::= TV <type>
  1851.                   ::= TT <type>
  1852.                   ::= TI <type>
  1853.                   ::= TS <type>
  1854.                   ::= GV <(object) name>
  1855.                   ::= T <call-offset> <(base) encoding>
  1856.                   ::= Tc <call-offset> <call-offset> <(base) encoding>
  1857.    Also g++ extensions:
  1858.                   ::= TC <type> <(offset) number> _ <(base) type>
  1859.                   ::= TF <type>
  1860.                   ::= TJ <type>
  1861.                   ::= GR <name>
  1862.                   ::= GA <encoding>
  1863.                   ::= Gr <resource name>
  1864.                   ::= GTt <encoding>
  1865.                   ::= GTn <encoding>
  1866. */
  1867.  
  1868. static struct demangle_component *
  1869. d_special_name (struct d_info *di)
  1870. {
  1871.   di->expansion += 20;
  1872.   if (d_check_char (di, 'T'))
  1873.     {
  1874.       switch (d_next_char (di))
  1875.         {
  1876.         case 'V':
  1877.           di->expansion -= 5;
  1878.           return d_make_comp (di, DEMANGLE_COMPONENT_VTABLE,
  1879.                               cplus_demangle_type (di), NULL);
  1880.         case 'T':
  1881.           di->expansion -= 10;
  1882.           return d_make_comp (di, DEMANGLE_COMPONENT_VTT,
  1883.                               cplus_demangle_type (di), NULL);
  1884.         case 'I':
  1885.           return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO,
  1886.                               cplus_demangle_type (di), NULL);
  1887.         case 'S':
  1888.           return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_NAME,
  1889.                               cplus_demangle_type (di), NULL);
  1890.  
  1891.         case 'h':
  1892.           if (! d_call_offset (di, 'h'))
  1893.             return NULL;
  1894.           return d_make_comp (di, DEMANGLE_COMPONENT_THUNK,
  1895.                               d_encoding (di, 0), NULL);
  1896.  
  1897.         case 'v':
  1898.           if (! d_call_offset (di, 'v'))
  1899.             return NULL;
  1900.           return d_make_comp (di, DEMANGLE_COMPONENT_VIRTUAL_THUNK,
  1901.                               d_encoding (di, 0), NULL);
  1902.  
  1903.         case 'c':
  1904.           if (! d_call_offset (di, '\0'))
  1905.             return NULL;
  1906.           if (! d_call_offset (di, '\0'))
  1907.             return NULL;
  1908.           return d_make_comp (di, DEMANGLE_COMPONENT_COVARIANT_THUNK,
  1909.                               d_encoding (di, 0), NULL);
  1910.  
  1911.         case 'C':
  1912.           {
  1913.             struct demangle_component *derived_type;
  1914.             long offset;
  1915.             struct demangle_component *base_type;
  1916.  
  1917.             derived_type = cplus_demangle_type (di);
  1918.             offset = d_number (di);
  1919.             if (offset < 0)
  1920.               return NULL;
  1921.             if (! d_check_char (di, '_'))
  1922.               return NULL;
  1923.             base_type = cplus_demangle_type (di);
  1924.             /* We don't display the offset.  FIXME: We should display
  1925.                it in verbose mode.  */
  1926.             di->expansion += 5;
  1927.             return d_make_comp (di, DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE,
  1928.                                 base_type, derived_type);
  1929.           }
  1930.  
  1931.         case 'F':
  1932.           return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_FN,
  1933.                               cplus_demangle_type (di), NULL);
  1934.         case 'J':
  1935.           return d_make_comp (di, DEMANGLE_COMPONENT_JAVA_CLASS,
  1936.                               cplus_demangle_type (di), NULL);
  1937.  
  1938.         case 'H':
  1939.           return d_make_comp (di, DEMANGLE_COMPONENT_TLS_INIT,
  1940.                               d_name (di), NULL);
  1941.  
  1942.         case 'W':
  1943.           return d_make_comp (di, DEMANGLE_COMPONENT_TLS_WRAPPER,
  1944.                               d_name (di), NULL);
  1945.  
  1946.         default:
  1947.           return NULL;
  1948.         }
  1949.     }
  1950.   else if (d_check_char (di, 'G'))
  1951.     {
  1952.       switch (d_next_char (di))
  1953.         {
  1954.         case 'V':
  1955.           return d_make_comp (di, DEMANGLE_COMPONENT_GUARD, d_name (di), NULL);
  1956.  
  1957.         case 'R':
  1958.           {
  1959.             struct demangle_component *name = d_name (di);
  1960.             return d_make_comp (di, DEMANGLE_COMPONENT_REFTEMP, name,
  1961.                                 d_number_component (di));
  1962.           }
  1963.  
  1964.         case 'A':
  1965.           return d_make_comp (di, DEMANGLE_COMPONENT_HIDDEN_ALIAS,
  1966.                               d_encoding (di, 0), NULL);
  1967.  
  1968.         case 'T':
  1969.           switch (d_next_char (di))
  1970.             {
  1971.             case 'n':
  1972.               return d_make_comp (di, DEMANGLE_COMPONENT_NONTRANSACTION_CLONE,
  1973.                                   d_encoding (di, 0), NULL);
  1974.             default:
  1975.               /* ??? The proposal is that other letters (such as 'h') stand
  1976.                  for different variants of transaction cloning, such as
  1977.                  compiling directly for hardware transaction support.  But
  1978.                  they still should all be transactional clones of some sort
  1979.                  so go ahead and call them that.  */
  1980.             case 't':
  1981.               return d_make_comp (di, DEMANGLE_COMPONENT_TRANSACTION_CLONE,
  1982.                                   d_encoding (di, 0), NULL);
  1983.             }
  1984.  
  1985.         case 'r':
  1986.           return d_java_resource (di);
  1987.  
  1988.         default:
  1989.           return NULL;
  1990.         }
  1991.     }
  1992.   else
  1993.     return NULL;
  1994. }
  1995.  
  1996. /* <call-offset> ::= h <nv-offset> _
  1997.                  ::= v <v-offset> _
  1998.  
  1999.    <nv-offset> ::= <(offset) number>
  2000.  
  2001.    <v-offset> ::= <(offset) number> _ <(virtual offset) number>
  2002.  
  2003.    The C parameter, if not '\0', is a character we just read which is
  2004.    the start of the <call-offset>.
  2005.  
  2006.    We don't display the offset information anywhere.  FIXME: We should
  2007.    display it in verbose mode.  */
  2008.  
  2009. static int
  2010. d_call_offset (struct d_info *di, int c)
  2011. {
  2012.   if (c == '\0')
  2013.     c = d_next_char (di);
  2014.  
  2015.   if (c == 'h')
  2016.     d_number (di);
  2017.   else if (c == 'v')
  2018.     {
  2019.       d_number (di);
  2020.       if (! d_check_char (di, '_'))
  2021.         return 0;
  2022.       d_number (di);
  2023.     }
  2024.   else
  2025.     return 0;
  2026.  
  2027.   if (! d_check_char (di, '_'))
  2028.     return 0;
  2029.  
  2030.   return 1;
  2031. }
  2032.  
  2033. /* <ctor-dtor-name> ::= C1
  2034.                     ::= C2
  2035.                     ::= C3
  2036.                     ::= D0
  2037.                     ::= D1
  2038.                     ::= D2
  2039. */
  2040.  
  2041. static struct demangle_component *
  2042. d_ctor_dtor_name (struct d_info *di)
  2043. {
  2044.   if (di->last_name != NULL)
  2045.     {
  2046.       if (di->last_name->type == DEMANGLE_COMPONENT_NAME)
  2047.         di->expansion += di->last_name->u.s_name.len;
  2048.       else if (di->last_name->type == DEMANGLE_COMPONENT_SUB_STD)
  2049.         di->expansion += di->last_name->u.s_string.len;
  2050.     }
  2051.   switch (d_peek_char (di))
  2052.     {
  2053.     case 'C':
  2054.       {
  2055.         enum gnu_v3_ctor_kinds kind;
  2056.  
  2057.         switch (d_peek_next_char (di))
  2058.           {
  2059.           case '1':
  2060.             kind = gnu_v3_complete_object_ctor;
  2061.             break;
  2062.           case '2':
  2063.             kind = gnu_v3_base_object_ctor;
  2064.             break;
  2065.           case '3':
  2066.             kind = gnu_v3_complete_object_allocating_ctor;
  2067.             break;
  2068.           case '5':
  2069.             kind = gnu_v3_object_ctor_group;
  2070.             break;
  2071.           default:
  2072.             return NULL;
  2073.           }
  2074.         d_advance (di, 2);
  2075.         return d_make_ctor (di, kind, di->last_name);
  2076.       }
  2077.  
  2078.     case 'D':
  2079.       {
  2080.         enum gnu_v3_dtor_kinds kind;
  2081.  
  2082.         switch (d_peek_next_char (di))
  2083.           {
  2084.           case '0':
  2085.             kind = gnu_v3_deleting_dtor;
  2086.             break;
  2087.           case '1':
  2088.             kind = gnu_v3_complete_object_dtor;
  2089.             break;
  2090.           case '2':
  2091.             kind = gnu_v3_base_object_dtor;
  2092.             break;
  2093.           case '5':
  2094.             kind = gnu_v3_object_dtor_group;
  2095.             break;
  2096.           default:
  2097.             return NULL;
  2098.           }
  2099.         d_advance (di, 2);
  2100.         return d_make_dtor (di, kind, di->last_name);
  2101.       }
  2102.  
  2103.     default:
  2104.       return NULL;
  2105.     }
  2106. }
  2107.  
  2108. /* <type> ::= <builtin-type>
  2109.           ::= <function-type>
  2110.           ::= <class-enum-type>
  2111.           ::= <array-type>
  2112.           ::= <pointer-to-member-type>
  2113.           ::= <template-param>
  2114.           ::= <template-template-param> <template-args>
  2115.           ::= <substitution>
  2116.           ::= <CV-qualifiers> <type>
  2117.           ::= P <type>
  2118.           ::= R <type>
  2119.           ::= O <type> (C++0x)
  2120.           ::= C <type>
  2121.           ::= G <type>
  2122.           ::= U <source-name> <type>
  2123.  
  2124.    <builtin-type> ::= various one letter codes
  2125.                   ::= u <source-name>
  2126. */
  2127.  
  2128. CP_STATIC_IF_GLIBCPP_V3
  2129. const struct demangle_builtin_type_info
  2130. cplus_demangle_builtin_types[D_BUILTIN_TYPE_COUNT] =
  2131. {
  2132.   /* a */ { NL ("signed char"), NL ("signed char"),     D_PRINT_DEFAULT },
  2133.   /* b */ { NL ("bool"),        NL ("boolean"),         D_PRINT_BOOL },
  2134.   /* c */ { NL ("char"),        NL ("byte"),            D_PRINT_DEFAULT },
  2135.   /* d */ { NL ("double"),      NL ("double"),          D_PRINT_FLOAT },
  2136.   /* e */ { NL ("long double"), NL ("long double"),     D_PRINT_FLOAT },
  2137.   /* f */ { NL ("float"),       NL ("float"),           D_PRINT_FLOAT },
  2138.   /* g */ { NL ("__float128"),  NL ("__float128"),      D_PRINT_FLOAT },
  2139.   /* h */ { NL ("unsigned char"), NL ("unsigned char"), D_PRINT_DEFAULT },
  2140.   /* i */ { NL ("int"),         NL ("int"),             D_PRINT_INT },
  2141.   /* j */ { NL ("unsigned int"), NL ("unsigned"),       D_PRINT_UNSIGNED },
  2142.   /* k */ { NULL, 0,            NULL, 0,                D_PRINT_DEFAULT },
  2143.   /* l */ { NL ("long"),        NL ("long"),            D_PRINT_LONG },
  2144.   /* m */ { NL ("unsigned long"), NL ("unsigned long"), D_PRINT_UNSIGNED_LONG },
  2145.   /* n */ { NL ("__int128"),    NL ("__int128"),        D_PRINT_DEFAULT },
  2146.   /* o */ { NL ("unsigned __int128"), NL ("unsigned __int128"),
  2147.             D_PRINT_DEFAULT },
  2148.   /* p */ { NULL, 0,            NULL, 0,                D_PRINT_DEFAULT },
  2149.   /* q */ { NULL, 0,            NULL, 0,                D_PRINT_DEFAULT },
  2150.   /* r */ { NULL, 0,            NULL, 0,                D_PRINT_DEFAULT },
  2151.   /* s */ { NL ("short"),       NL ("short"),           D_PRINT_DEFAULT },
  2152.   /* t */ { NL ("unsigned short"), NL ("unsigned short"), D_PRINT_DEFAULT },
  2153.   /* u */ { NULL, 0,            NULL, 0,                D_PRINT_DEFAULT },
  2154.   /* v */ { NL ("void"),        NL ("void"),            D_PRINT_VOID },
  2155.   /* w */ { NL ("wchar_t"),     NL ("char"),            D_PRINT_DEFAULT },
  2156.   /* x */ { NL ("long long"),   NL ("long"),            D_PRINT_LONG_LONG },
  2157.   /* y */ { NL ("unsigned long long"), NL ("unsigned long long"),
  2158.             D_PRINT_UNSIGNED_LONG_LONG },
  2159.   /* z */ { NL ("..."),         NL ("..."),             D_PRINT_DEFAULT },
  2160.   /* 26 */ { NL ("decimal32"),  NL ("decimal32"),       D_PRINT_DEFAULT },
  2161.   /* 27 */ { NL ("decimal64"),  NL ("decimal64"),       D_PRINT_DEFAULT },
  2162.   /* 28 */ { NL ("decimal128"), NL ("decimal128"),      D_PRINT_DEFAULT },
  2163.   /* 29 */ { NL ("half"),       NL ("half"),            D_PRINT_FLOAT },
  2164.   /* 30 */ { NL ("char16_t"),   NL ("char16_t"),        D_PRINT_DEFAULT },
  2165.   /* 31 */ { NL ("char32_t"),   NL ("char32_t"),        D_PRINT_DEFAULT },
  2166.   /* 32 */ { NL ("decltype(nullptr)"),  NL ("decltype(nullptr)"),
  2167.              D_PRINT_DEFAULT },
  2168. };
  2169.  
  2170. CP_STATIC_IF_GLIBCPP_V3
  2171. struct demangle_component *
  2172. cplus_demangle_type (struct d_info *di)
  2173. {
  2174.   char peek;
  2175.   struct demangle_component *ret;
  2176.   int can_subst;
  2177.  
  2178.   /* The ABI specifies that when CV-qualifiers are used, the base type
  2179.      is substitutable, and the fully qualified type is substitutable,
  2180.      but the base type with a strict subset of the CV-qualifiers is
  2181.      not substitutable.  The natural recursive implementation of the
  2182.      CV-qualifiers would cause subsets to be substitutable, so instead
  2183.      we pull them all off now.
  2184.  
  2185.      FIXME: The ABI says that order-insensitive vendor qualifiers
  2186.      should be handled in the same way, but we have no way to tell
  2187.      which vendor qualifiers are order-insensitive and which are
  2188.      order-sensitive.  So we just assume that they are all
  2189.      order-sensitive.  g++ 3.4 supports only one vendor qualifier,
  2190.      __vector, and it treats it as order-sensitive when mangling
  2191.      names.  */
  2192.  
  2193.   peek = d_peek_char (di);
  2194.   if (peek == 'r' || peek == 'V' || peek == 'K')
  2195.     {
  2196.       struct demangle_component **pret;
  2197.  
  2198.       pret = d_cv_qualifiers (di, &ret, 0);
  2199.       if (pret == NULL)
  2200.         return NULL;
  2201.       *pret = cplus_demangle_type (di);
  2202.       if (! *pret)
  2203.         return NULL;
  2204.       if ((*pret)->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
  2205.           || (*pret)->type == DEMANGLE_COMPONENT_REFERENCE_THIS)
  2206.         {
  2207.           /* Move the ref-qualifier outside the cv-qualifiers so that
  2208.              they are printed in the right order.  */
  2209.           struct demangle_component *fn = d_left (*pret);
  2210.           d_left (*pret) = ret;
  2211.           ret = *pret;
  2212.           *pret = fn;
  2213.         }
  2214.       if (! d_add_substitution (di, ret))
  2215.         return NULL;
  2216.       return ret;
  2217.     }
  2218.  
  2219.   can_subst = 1;
  2220.  
  2221.   switch (peek)
  2222.     {
  2223.     case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
  2224.     case 'h': case 'i': case 'j':           case 'l': case 'm': case 'n':
  2225.     case 'o':                               case 's': case 't':
  2226.     case 'v': case 'w': case 'x': case 'y': case 'z':
  2227.       ret = d_make_builtin_type (di,
  2228.                                  &cplus_demangle_builtin_types[peek - 'a']);
  2229.       di->expansion += ret->u.s_builtin.type->len;
  2230.       can_subst = 0;
  2231.       d_advance (di, 1);
  2232.       break;
  2233.  
  2234.     case 'u':
  2235.       d_advance (di, 1);
  2236.       ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE,
  2237.                          d_source_name (di), NULL);
  2238.       break;
  2239.  
  2240.     case 'F':
  2241.       ret = d_function_type (di);
  2242.       break;
  2243.  
  2244.     case '0': case '1': case '2': case '3': case '4':
  2245.     case '5': case '6': case '7': case '8': case '9':
  2246.     case 'N':
  2247.     case 'Z':
  2248.       ret = d_class_enum_type (di);
  2249.       break;
  2250.  
  2251.     case 'A':
  2252.       ret = d_array_type (di);
  2253.       break;
  2254.  
  2255.     case 'M':
  2256.       ret = d_pointer_to_member_type (di);
  2257.       break;
  2258.  
  2259.     case 'T':
  2260.       ret = d_template_param (di);
  2261.       if (d_peek_char (di) == 'I')
  2262.         {
  2263.           /* This is <template-template-param> <template-args>.  The
  2264.              <template-template-param> part is a substitution
  2265.              candidate.  */
  2266.           if (! d_add_substitution (di, ret))
  2267.             return NULL;
  2268.           ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
  2269.                              d_template_args (di));
  2270.         }
  2271.       break;
  2272.  
  2273.     case 'S':
  2274.       /* If this is a special substitution, then it is the start of
  2275.          <class-enum-type>.  */
  2276.       {
  2277.         char peek_next;
  2278.  
  2279.         peek_next = d_peek_next_char (di);
  2280.         if (IS_DIGIT (peek_next)
  2281.             || peek_next == '_'
  2282.             || IS_UPPER (peek_next))
  2283.           {
  2284.             ret = d_substitution (di, 0);
  2285.             /* The substituted name may have been a template name and
  2286.                may be followed by tepmlate args.  */
  2287.             if (d_peek_char (di) == 'I')
  2288.               ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
  2289.                                  d_template_args (di));
  2290.             else
  2291.               can_subst = 0;
  2292.           }
  2293.         else
  2294.           {
  2295.             ret = d_class_enum_type (di);
  2296.             /* If the substitution was a complete type, then it is not
  2297.                a new substitution candidate.  However, if the
  2298.                substitution was followed by template arguments, then
  2299.                the whole thing is a substitution candidate.  */
  2300.             if (ret != NULL && ret->type == DEMANGLE_COMPONENT_SUB_STD)
  2301.               can_subst = 0;
  2302.           }
  2303.       }
  2304.       break;
  2305.  
  2306.     case 'O':
  2307.       d_advance (di, 1);
  2308.       ret = d_make_comp (di, DEMANGLE_COMPONENT_RVALUE_REFERENCE,
  2309.                          cplus_demangle_type (di), NULL);
  2310.       break;
  2311.  
  2312.     case 'P':
  2313.       d_advance (di, 1);
  2314.       ret = d_make_comp (di, DEMANGLE_COMPONENT_POINTER,
  2315.                          cplus_demangle_type (di), NULL);
  2316.       break;
  2317.  
  2318.     case 'R':
  2319.       d_advance (di, 1);
  2320.       ret = d_make_comp (di, DEMANGLE_COMPONENT_REFERENCE,
  2321.                          cplus_demangle_type (di), NULL);
  2322.       break;
  2323.  
  2324.     case 'C':
  2325.       d_advance (di, 1);
  2326.       ret = d_make_comp (di, DEMANGLE_COMPONENT_COMPLEX,
  2327.                          cplus_demangle_type (di), NULL);
  2328.       break;
  2329.  
  2330.     case 'G':
  2331.       d_advance (di, 1);
  2332.       ret = d_make_comp (di, DEMANGLE_COMPONENT_IMAGINARY,
  2333.                          cplus_demangle_type (di), NULL);
  2334.       break;
  2335.  
  2336.     case 'U':
  2337.       d_advance (di, 1);
  2338.       ret = d_source_name (di);
  2339.       ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL,
  2340.                          cplus_demangle_type (di), ret);
  2341.       break;
  2342.  
  2343.     case 'D':
  2344.       can_subst = 0;
  2345.       d_advance (di, 1);
  2346.       peek = d_next_char (di);
  2347.       switch (peek)
  2348.         {
  2349.         case 'T':
  2350.         case 't':
  2351.           /* decltype (expression) */
  2352.           ret = d_make_comp (di, DEMANGLE_COMPONENT_DECLTYPE,
  2353.                              d_expression (di), NULL);
  2354.           if (ret && d_next_char (di) != 'E')
  2355.             ret = NULL;
  2356.           can_subst = 1;
  2357.           break;
  2358.          
  2359.         case 'p':
  2360.           /* Pack expansion.  */
  2361.           ret = d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION,
  2362.                              cplus_demangle_type (di), NULL);
  2363.           can_subst = 1;
  2364.           break;
  2365.  
  2366.         case 'a':
  2367.           /* auto */
  2368.           ret = d_make_name (di, "auto", 4);
  2369.           break;
  2370.          
  2371.         case 'f':
  2372.           /* 32-bit decimal floating point */
  2373.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[26]);
  2374.           di->expansion += ret->u.s_builtin.type->len;
  2375.           break;
  2376.         case 'd':
  2377.           /* 64-bit DFP */
  2378.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[27]);
  2379.           di->expansion += ret->u.s_builtin.type->len;
  2380.           break;
  2381.         case 'e':
  2382.           /* 128-bit DFP */
  2383.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[28]);
  2384.           di->expansion += ret->u.s_builtin.type->len;
  2385.           break;
  2386.         case 'h':
  2387.           /* 16-bit half-precision FP */
  2388.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]);
  2389.           di->expansion += ret->u.s_builtin.type->len;
  2390.           break;
  2391.         case 's':
  2392.           /* char16_t */
  2393.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
  2394.           di->expansion += ret->u.s_builtin.type->len;
  2395.           break;
  2396.         case 'i':
  2397.           /* char32_t */
  2398.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
  2399.           di->expansion += ret->u.s_builtin.type->len;
  2400.           break;
  2401.  
  2402.         case 'F':
  2403.           /* Fixed point types. DF<int bits><length><fract bits><sat>  */
  2404.           ret = d_make_empty (di);
  2405.           ret->type = DEMANGLE_COMPONENT_FIXED_TYPE;
  2406.           if ((ret->u.s_fixed.accum = IS_DIGIT (d_peek_char (di))))
  2407.             /* For demangling we don't care about the bits.  */
  2408.             d_number (di);
  2409.           ret->u.s_fixed.length = cplus_demangle_type (di);
  2410.           if (ret->u.s_fixed.length == NULL)
  2411.             return NULL;
  2412.           d_number (di);
  2413.           peek = d_next_char (di);
  2414.           ret->u.s_fixed.sat = (peek == 's');
  2415.           break;
  2416.  
  2417.         case 'v':
  2418.           ret = d_vector_type (di);
  2419.           can_subst = 1;
  2420.           break;
  2421.  
  2422.         case 'n':
  2423.           /* decltype(nullptr) */
  2424.           ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
  2425.           di->expansion += ret->u.s_builtin.type->len;
  2426.           break;
  2427.  
  2428.         default:
  2429.           return NULL;
  2430.         }
  2431.       break;
  2432.  
  2433.     default:
  2434.       return NULL;
  2435.     }
  2436.  
  2437.   if (can_subst)
  2438.     {
  2439.       if (! d_add_substitution (di, ret))
  2440.         return NULL;
  2441.     }
  2442.  
  2443.   return ret;
  2444. }
  2445.  
  2446. /* <CV-qualifiers> ::= [r] [V] [K]  */
  2447.  
  2448. static struct demangle_component **
  2449. d_cv_qualifiers (struct d_info *di,
  2450.                  struct demangle_component **pret, int member_fn)
  2451. {
  2452.   struct demangle_component **pstart;
  2453.   char peek;
  2454.  
  2455.   pstart = pret;
  2456.   peek = d_peek_char (di);
  2457.   while (peek == 'r' || peek == 'V' || peek == 'K')
  2458.     {
  2459.       enum demangle_component_type t;
  2460.  
  2461.       d_advance (di, 1);
  2462.       if (peek == 'r')
  2463.         {
  2464.           t = (member_fn
  2465.                ? DEMANGLE_COMPONENT_RESTRICT_THIS
  2466.                : DEMANGLE_COMPONENT_RESTRICT);
  2467.           di->expansion += sizeof "restrict";
  2468.         }
  2469.       else if (peek == 'V')
  2470.         {
  2471.           t = (member_fn
  2472.                ? DEMANGLE_COMPONENT_VOLATILE_THIS
  2473.                : DEMANGLE_COMPONENT_VOLATILE);
  2474.           di->expansion += sizeof "volatile";
  2475.         }
  2476.       else
  2477.         {
  2478.           t = (member_fn
  2479.                ? DEMANGLE_COMPONENT_CONST_THIS
  2480.                : DEMANGLE_COMPONENT_CONST);
  2481.           di->expansion += sizeof "const";
  2482.         }
  2483.  
  2484.       *pret = d_make_comp (di, t, NULL, NULL);
  2485.       if (*pret == NULL)
  2486.         return NULL;
  2487.       pret = &d_left (*pret);
  2488.  
  2489.       peek = d_peek_char (di);
  2490.     }
  2491.  
  2492.   if (!member_fn && peek == 'F')
  2493.     {
  2494.       while (pstart != pret)
  2495.         {
  2496.           switch ((*pstart)->type)
  2497.             {
  2498.             case DEMANGLE_COMPONENT_RESTRICT:
  2499.               (*pstart)->type = DEMANGLE_COMPONENT_RESTRICT_THIS;
  2500.               break;
  2501.             case DEMANGLE_COMPONENT_VOLATILE:
  2502.               (*pstart)->type = DEMANGLE_COMPONENT_VOLATILE_THIS;
  2503.               break;
  2504.             case DEMANGLE_COMPONENT_CONST:
  2505.               (*pstart)->type = DEMANGLE_COMPONENT_CONST_THIS;
  2506.               break;
  2507.             default:
  2508.               break;
  2509.             }
  2510.           pstart = &d_left (*pstart);
  2511.         }
  2512.     }
  2513.  
  2514.   return pret;
  2515. }
  2516.  
  2517. /* <ref-qualifier> ::= R
  2518.                    ::= O */
  2519.  
  2520. static struct demangle_component *
  2521. d_ref_qualifier (struct d_info *di, struct demangle_component *sub)
  2522. {
  2523.   struct demangle_component *ret = sub;
  2524.   char peek;
  2525.  
  2526.   peek = d_peek_char (di);
  2527.   if (peek == 'R' || peek == 'O')
  2528.     {
  2529.       enum demangle_component_type t;
  2530.       if (peek == 'R')
  2531.         {
  2532.           t = DEMANGLE_COMPONENT_REFERENCE_THIS;
  2533.           di->expansion += sizeof "&";
  2534.         }
  2535.       else
  2536.         {
  2537.           t = DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS;
  2538.           di->expansion += sizeof "&&";
  2539.         }
  2540.       d_advance (di, 1);
  2541.  
  2542.       ret = d_make_comp (di, t, ret, NULL);
  2543.     }
  2544.  
  2545.   return ret;
  2546. }
  2547.  
  2548. /* <function-type> ::= F [Y] <bare-function-type> [<ref-qualifier>] E  */
  2549.  
  2550. static struct demangle_component *
  2551. d_function_type (struct d_info *di)
  2552. {
  2553.   struct demangle_component *ret;
  2554.  
  2555.   if (! d_check_char (di, 'F'))
  2556.     return NULL;
  2557.   if (d_peek_char (di) == 'Y')
  2558.     {
  2559.       /* Function has C linkage.  We don't print this information.
  2560.          FIXME: We should print it in verbose mode.  */
  2561.       d_advance (di, 1);
  2562.     }
  2563.   ret = d_bare_function_type (di, 1);
  2564.   ret = d_ref_qualifier (di, ret);
  2565.  
  2566.   if (! d_check_char (di, 'E'))
  2567.     return NULL;
  2568.   return ret;
  2569. }
  2570.  
  2571. /* <type>+ */
  2572.  
  2573. static struct demangle_component *
  2574. d_parmlist (struct d_info *di)
  2575. {
  2576.   struct demangle_component *tl;
  2577.   struct demangle_component **ptl;
  2578.  
  2579.   tl = NULL;
  2580.   ptl = &tl;
  2581.   while (1)
  2582.     {
  2583.       struct demangle_component *type;
  2584.  
  2585.       char peek = d_peek_char (di);
  2586.       if (peek == '\0' || peek == 'E' || peek == '.')
  2587.         break;
  2588.       if ((peek == 'R' || peek == 'O')
  2589.           && d_peek_next_char (di) == 'E')
  2590.         /* Function ref-qualifier, not a ref prefix for a parameter type.  */
  2591.         break;
  2592.       type = cplus_demangle_type (di);
  2593.       if (type == NULL)
  2594.         return NULL;
  2595.       *ptl = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, type, NULL);
  2596.       if (*ptl == NULL)
  2597.         return NULL;
  2598.       ptl = &d_right (*ptl);
  2599.     }
  2600.  
  2601.   /* There should be at least one parameter type besides the optional
  2602.      return type.  A function which takes no arguments will have a
  2603.      single parameter type void.  */
  2604.   if (tl == NULL)
  2605.     return NULL;
  2606.  
  2607.   /* If we have a single parameter type void, omit it.  */
  2608.   if (d_right (tl) == NULL
  2609.       && d_left (tl)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE
  2610.       && d_left (tl)->u.s_builtin.type->print == D_PRINT_VOID)
  2611.     {
  2612.       di->expansion -= d_left (tl)->u.s_builtin.type->len;
  2613.       d_left (tl) = NULL;
  2614.     }
  2615.  
  2616.   return tl;
  2617. }
  2618.  
  2619. /* <bare-function-type> ::= [J]<type>+  */
  2620.  
  2621. static struct demangle_component *
  2622. d_bare_function_type (struct d_info *di, int has_return_type)
  2623. {
  2624.   struct demangle_component *return_type;
  2625.   struct demangle_component *tl;
  2626.   char peek;
  2627.  
  2628.   /* Detect special qualifier indicating that the first argument
  2629.      is the return type.  */
  2630.   peek = d_peek_char (di);
  2631.   if (peek == 'J')
  2632.     {
  2633.       d_advance (di, 1);
  2634.       has_return_type = 1;
  2635.     }
  2636.  
  2637.   if (has_return_type)
  2638.     {
  2639.       return_type = cplus_demangle_type (di);
  2640.       if (return_type == NULL)
  2641.         return NULL;
  2642.     }
  2643.   else
  2644.     return_type = NULL;
  2645.  
  2646.   tl = d_parmlist (di);
  2647.   if (tl == NULL)
  2648.     return NULL;
  2649.  
  2650.   return d_make_comp (di, DEMANGLE_COMPONENT_FUNCTION_TYPE,
  2651.                       return_type, tl);
  2652. }
  2653.  
  2654. /* <class-enum-type> ::= <name>  */
  2655.  
  2656. static struct demangle_component *
  2657. d_class_enum_type (struct d_info *di)
  2658. {
  2659.   return d_name (di);
  2660. }
  2661.  
  2662. /* <array-type> ::= A <(positive dimension) number> _ <(element) type>
  2663.                 ::= A [<(dimension) expression>] _ <(element) type>
  2664. */
  2665.  
  2666. static struct demangle_component *
  2667. d_array_type (struct d_info *di)
  2668. {
  2669.   char peek;
  2670.   struct demangle_component *dim;
  2671.  
  2672.   if (! d_check_char (di, 'A'))
  2673.     return NULL;
  2674.  
  2675.   peek = d_peek_char (di);
  2676.   if (peek == '_')
  2677.     dim = NULL;
  2678.   else if (IS_DIGIT (peek))
  2679.     {
  2680.       const char *s;
  2681.  
  2682.       s = d_str (di);
  2683.       do
  2684.         {
  2685.           d_advance (di, 1);
  2686.           peek = d_peek_char (di);
  2687.         }
  2688.       while (IS_DIGIT (peek));
  2689.       dim = d_make_name (di, s, d_str (di) - s);
  2690.       if (dim == NULL)
  2691.         return NULL;
  2692.     }
  2693.   else
  2694.     {
  2695.       dim = d_expression (di);
  2696.       if (dim == NULL)
  2697.         return NULL;
  2698.     }
  2699.  
  2700.   if (! d_check_char (di, '_'))
  2701.     return NULL;
  2702.  
  2703.   return d_make_comp (di, DEMANGLE_COMPONENT_ARRAY_TYPE, dim,
  2704.                       cplus_demangle_type (di));
  2705. }
  2706.  
  2707. /* <vector-type> ::= Dv <number> _ <type>
  2708.                  ::= Dv _ <expression> _ <type> */
  2709.  
  2710. static struct demangle_component *
  2711. d_vector_type (struct d_info *di)
  2712. {
  2713.   char peek;
  2714.   struct demangle_component *dim;
  2715.  
  2716.   peek = d_peek_char (di);
  2717.   if (peek == '_')
  2718.     {
  2719.       d_advance (di, 1);
  2720.       dim = d_expression (di);
  2721.     }
  2722.   else
  2723.     dim = d_number_component (di);
  2724.  
  2725.   if (dim == NULL)
  2726.     return NULL;
  2727.  
  2728.   if (! d_check_char (di, '_'))
  2729.     return NULL;
  2730.  
  2731.   return d_make_comp (di, DEMANGLE_COMPONENT_VECTOR_TYPE, dim,
  2732.                       cplus_demangle_type (di));
  2733. }
  2734.  
  2735. /* <pointer-to-member-type> ::= M <(class) type> <(member) type>  */
  2736.  
  2737. static struct demangle_component *
  2738. d_pointer_to_member_type (struct d_info *di)
  2739. {
  2740.   struct demangle_component *cl;
  2741.   struct demangle_component *mem;
  2742.   struct demangle_component **pmem;
  2743.  
  2744.   if (! d_check_char (di, 'M'))
  2745.     return NULL;
  2746.  
  2747.   cl = cplus_demangle_type (di);
  2748.  
  2749.   /* The ABI specifies that any type can be a substitution source, and
  2750.      that M is followed by two types, and that when a CV-qualified
  2751.      type is seen both the base type and the CV-qualified types are
  2752.      substitution sources.  The ABI also specifies that for a pointer
  2753.      to a CV-qualified member function, the qualifiers are attached to
  2754.      the second type.  Given the grammar, a plain reading of the ABI
  2755.      suggests that both the CV-qualified member function and the
  2756.      non-qualified member function are substitution sources.  However,
  2757.      g++ does not work that way.  g++ treats only the CV-qualified
  2758.      member function as a substitution source.  FIXME.  So to work
  2759.      with g++, we need to pull off the CV-qualifiers here, in order to
  2760.      avoid calling add_substitution() in cplus_demangle_type().  But
  2761.      for a CV-qualified member which is not a function, g++ does
  2762.      follow the ABI, so we need to handle that case here by calling
  2763.      d_add_substitution ourselves.  */
  2764.  
  2765.   pmem = d_cv_qualifiers (di, &mem, 1);
  2766.   if (pmem == NULL)
  2767.     return NULL;
  2768.   *pmem = cplus_demangle_type (di);
  2769.   if (*pmem == NULL)
  2770.     return NULL;
  2771.  
  2772.   if (pmem != &mem
  2773.       && ((*pmem)->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
  2774.           || (*pmem)->type == DEMANGLE_COMPONENT_REFERENCE_THIS))
  2775.     {
  2776.       /* Move the ref-qualifier outside the cv-qualifiers so that
  2777.          they are printed in the right order.  */
  2778.       struct demangle_component *fn = d_left (*pmem);
  2779.       d_left (*pmem) = mem;
  2780.       mem = *pmem;
  2781.       *pmem = fn;
  2782.     }
  2783.  
  2784.   if (pmem != &mem && (*pmem)->type != DEMANGLE_COMPONENT_FUNCTION_TYPE)
  2785.     {
  2786.       if (! d_add_substitution (di, mem))
  2787.         return NULL;
  2788.     }
  2789.  
  2790.   return d_make_comp (di, DEMANGLE_COMPONENT_PTRMEM_TYPE, cl, mem);
  2791. }
  2792.  
  2793. /* <non-negative number> _ */
  2794.  
  2795. static long
  2796. d_compact_number (struct d_info *di)
  2797. {
  2798.   long num;
  2799.   if (d_peek_char (di) == '_')
  2800.     num = 0;
  2801.   else if (d_peek_char (di) == 'n')
  2802.     return -1;
  2803.   else
  2804.     num = d_number (di) + 1;
  2805.  
  2806.   if (! d_check_char (di, '_'))
  2807.     return -1;
  2808.   return num;
  2809. }
  2810.  
  2811. /* <template-param> ::= T_
  2812.                     ::= T <(parameter-2 non-negative) number> _
  2813. */
  2814.  
  2815. static struct demangle_component *
  2816. d_template_param (struct d_info *di)
  2817. {
  2818.   long param;
  2819.  
  2820.   if (! d_check_char (di, 'T'))
  2821.     return NULL;
  2822.  
  2823.   param = d_compact_number (di);
  2824.   if (param < 0)
  2825.     return NULL;
  2826.  
  2827.   ++di->did_subs;
  2828.  
  2829.   return d_make_template_param (di, param);
  2830. }
  2831.  
  2832. /* <template-args> ::= I <template-arg>+ E  */
  2833.  
  2834. static struct demangle_component *
  2835. d_template_args (struct d_info *di)
  2836. {
  2837.   struct demangle_component *hold_last_name;
  2838.   struct demangle_component *al;
  2839.   struct demangle_component **pal;
  2840.  
  2841.   /* Preserve the last name we saw--don't let the template arguments
  2842.      clobber it, as that would give us the wrong name for a subsequent
  2843.      constructor or destructor.  */
  2844.   hold_last_name = di->last_name;
  2845.  
  2846.   if (d_peek_char (di) != 'I'
  2847.       && d_peek_char (di) != 'J')
  2848.     return NULL;
  2849.   d_advance (di, 1);
  2850.  
  2851.   if (d_peek_char (di) == 'E')
  2852.     {
  2853.       /* An argument pack can be empty.  */
  2854.       d_advance (di, 1);
  2855.       return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, NULL, NULL);
  2856.     }
  2857.  
  2858.   al = NULL;
  2859.   pal = &al;
  2860.   while (1)
  2861.     {
  2862.       struct demangle_component *a;
  2863.  
  2864.       a = d_template_arg (di);
  2865.       if (a == NULL)
  2866.         return NULL;
  2867.  
  2868.       *pal = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, a, NULL);
  2869.       if (*pal == NULL)
  2870.         return NULL;
  2871.       pal = &d_right (*pal);
  2872.  
  2873.       if (d_peek_char (di) == 'E')
  2874.         {
  2875.           d_advance (di, 1);
  2876.           break;
  2877.         }
  2878.     }
  2879.  
  2880.   di->last_name = hold_last_name;
  2881.  
  2882.   return al;
  2883. }
  2884.  
  2885. /* <template-arg> ::= <type>
  2886.                   ::= X <expression> E
  2887.                   ::= <expr-primary>
  2888. */
  2889.  
  2890. static struct demangle_component *
  2891. d_template_arg (struct d_info *di)
  2892. {
  2893.   struct demangle_component *ret;
  2894.  
  2895.   switch (d_peek_char (di))
  2896.     {
  2897.     case 'X':
  2898.       d_advance (di, 1);
  2899.       ret = d_expression (di);
  2900.       if (! d_check_char (di, 'E'))
  2901.         return NULL;
  2902.       return ret;
  2903.  
  2904.     case 'L':
  2905.       return d_expr_primary (di);
  2906.  
  2907.     case 'I':
  2908.     case 'J':
  2909.       /* An argument pack.  */
  2910.       return d_template_args (di);
  2911.  
  2912.     default:
  2913.       return cplus_demangle_type (di);
  2914.     }
  2915. }
  2916.  
  2917. /* Parse a sequence of expressions until we hit the terminator
  2918.    character.  */
  2919.  
  2920. static struct demangle_component *
  2921. d_exprlist (struct d_info *di, char terminator)
  2922. {
  2923.   struct demangle_component *list = NULL;
  2924.   struct demangle_component **p = &list;
  2925.  
  2926.   if (d_peek_char (di) == terminator)
  2927.     {
  2928.       d_advance (di, 1);
  2929.       return d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, NULL, NULL);
  2930.     }
  2931.  
  2932.   while (1)
  2933.     {
  2934.       struct demangle_component *arg = d_expression (di);
  2935.       if (arg == NULL)
  2936.         return NULL;
  2937.  
  2938.       *p = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, arg, NULL);
  2939.       if (*p == NULL)
  2940.         return NULL;
  2941.       p = &d_right (*p);
  2942.  
  2943.       if (d_peek_char (di) == terminator)
  2944.         {
  2945.           d_advance (di, 1);
  2946.           break;
  2947.         }
  2948.     }
  2949.  
  2950.   return list;
  2951. }
  2952.  
  2953. /* Returns nonzero iff OP is an operator for a C++ cast: const_cast,
  2954.    dynamic_cast, static_cast or reinterpret_cast.  */
  2955.  
  2956. static int
  2957. op_is_new_cast (struct demangle_component *op)
  2958. {
  2959.   const char *code = op->u.s_operator.op->code;
  2960.   return (code[1] == 'c'
  2961.           && (code[0] == 's' || code[0] == 'd'
  2962.               || code[0] == 'c' || code[0] == 'r'));
  2963. }
  2964.  
  2965. /* <expression> ::= <(unary) operator-name> <expression>
  2966.                 ::= <(binary) operator-name> <expression> <expression>
  2967.                 ::= <(trinary) operator-name> <expression> <expression> <expression>
  2968.                 ::= cl <expression>+ E
  2969.                 ::= st <type>
  2970.                 ::= <template-param>
  2971.                 ::= sr <type> <unqualified-name>
  2972.                 ::= sr <type> <unqualified-name> <template-args>
  2973.                 ::= <expr-primary>
  2974. */
  2975.  
  2976. static struct demangle_component *
  2977. d_expression (struct d_info *di)
  2978. {
  2979.   char peek;
  2980.  
  2981.   peek = d_peek_char (di);
  2982.   if (peek == 'L')
  2983.     return d_expr_primary (di);
  2984.   else if (peek == 'T')
  2985.     return d_template_param (di);
  2986.   else if (peek == 's' && d_peek_next_char (di) == 'r')
  2987.     {
  2988.       struct demangle_component *type;
  2989.       struct demangle_component *name;
  2990.  
  2991.       d_advance (di, 2);
  2992.       type = cplus_demangle_type (di);
  2993.       name = d_unqualified_name (di);
  2994.       if (d_peek_char (di) != 'I')
  2995.         return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, name);
  2996.       else
  2997.         return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type,
  2998.                             d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
  2999.                                          d_template_args (di)));
  3000.     }
  3001.   else if (peek == 's' && d_peek_next_char (di) == 'p')
  3002.     {
  3003.       d_advance (di, 2);
  3004.       return d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION,
  3005.                           d_expression (di), NULL);
  3006.     }
  3007.   else if (peek == 'f' && d_peek_next_char (di) == 'p')
  3008.     {
  3009.       /* Function parameter used in a late-specified return type.  */
  3010.       int index;
  3011.       d_advance (di, 2);
  3012.       if (d_peek_char (di) == 'T')
  3013.         {
  3014.           /* 'this' parameter.  */
  3015.           d_advance (di, 1);
  3016.           index = 0;
  3017.         }
  3018.       else
  3019.         {
  3020.           index = d_compact_number (di) + 1;
  3021.           if (index == 0)
  3022.             return NULL;
  3023.         }
  3024.       return d_make_function_param (di, index);
  3025.     }
  3026.   else if (IS_DIGIT (peek)
  3027.            || (peek == 'o' && d_peek_next_char (di) == 'n'))
  3028.     {
  3029.       /* We can get an unqualified name as an expression in the case of
  3030.          a dependent function call, i.e. decltype(f(t)).  */
  3031.       struct demangle_component *name;
  3032.  
  3033.       if (peek == 'o')
  3034.         /* operator-function-id, i.e. operator+(t).  */
  3035.         d_advance (di, 2);
  3036.  
  3037.       name = d_unqualified_name (di);
  3038.       if (name == NULL)
  3039.         return NULL;
  3040.       if (d_peek_char (di) == 'I')
  3041.         return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
  3042.                             d_template_args (di));
  3043.       else
  3044.         return name;
  3045.     }
  3046.   else if ((peek == 'i' || peek == 't')
  3047.            && d_peek_next_char (di) == 'l')
  3048.     {
  3049.       /* Brace-enclosed initializer list, untyped or typed.  */
  3050.       struct demangle_component *type = NULL;
  3051.       if (peek == 't')
  3052.         type = cplus_demangle_type (di);
  3053.       d_advance (di, 2);
  3054.       return d_make_comp (di, DEMANGLE_COMPONENT_INITIALIZER_LIST,
  3055.                           type, d_exprlist (di, 'E'));
  3056.     }
  3057.   else
  3058.     {
  3059.       struct demangle_component *op;
  3060.       const char *code = NULL;
  3061.       int args;
  3062.  
  3063.       op = d_operator_name (di);
  3064.       if (op == NULL)
  3065.         return NULL;
  3066.  
  3067.       if (op->type == DEMANGLE_COMPONENT_OPERATOR)
  3068.         {
  3069.           code = op->u.s_operator.op->code;
  3070.           di->expansion += op->u.s_operator.op->len - 2;
  3071.           if (strcmp (code, "st") == 0)
  3072.             return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
  3073.                                 cplus_demangle_type (di));
  3074.         }
  3075.  
  3076.       switch (op->type)
  3077.         {
  3078.         default:
  3079.           return NULL;
  3080.         case DEMANGLE_COMPONENT_OPERATOR:
  3081.           args = op->u.s_operator.op->args;
  3082.           break;
  3083.         case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
  3084.           args = op->u.s_extended_operator.args;
  3085.           break;
  3086.         case DEMANGLE_COMPONENT_CAST:
  3087.           args = 1;
  3088.           break;
  3089.         }
  3090.  
  3091.       switch (args)
  3092.         {
  3093.         case 0:
  3094.           return d_make_comp (di, DEMANGLE_COMPONENT_NULLARY, op, NULL);
  3095.  
  3096.         case 1:
  3097.           {
  3098.             struct demangle_component *operand;
  3099.             int suffix = 0;
  3100.  
  3101.             if (code && (code[0] == 'p' || code[0] == 'm')
  3102.                 && code[1] == code[0])
  3103.               /* pp_ and mm_ are the prefix variants.  */
  3104.               suffix = !d_check_char (di, '_');
  3105.  
  3106.             if (op->type == DEMANGLE_COMPONENT_CAST
  3107.                 && d_check_char (di, '_'))
  3108.               operand = d_exprlist (di, 'E');
  3109.             else
  3110.               operand = d_expression (di);
  3111.  
  3112.             if (suffix)
  3113.               /* Indicate the suffix variant for d_print_comp.  */
  3114.               return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
  3115.                                   d_make_comp (di,
  3116.                                                DEMANGLE_COMPONENT_BINARY_ARGS,
  3117.                                                operand, operand));
  3118.             else
  3119.               return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
  3120.                                   operand);
  3121.           }
  3122.         case 2:
  3123.           {
  3124.             struct demangle_component *left;
  3125.             struct demangle_component *right;
  3126.  
  3127.             if (op_is_new_cast (op))
  3128.               left = cplus_demangle_type (di);
  3129.             else
  3130.               left = d_expression (di);
  3131.             if (!strcmp (code, "cl"))
  3132.               right = d_exprlist (di, 'E');
  3133.             else if (!strcmp (code, "dt") || !strcmp (code, "pt"))
  3134.               {
  3135.                 right = d_unqualified_name (di);
  3136.                 if (d_peek_char (di) == 'I')
  3137.                   right = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE,
  3138.                                        right, d_template_args (di));
  3139.               }
  3140.             else
  3141.               right = d_expression (di);
  3142.  
  3143.             return d_make_comp (di, DEMANGLE_COMPONENT_BINARY, op,
  3144.                                 d_make_comp (di,
  3145.                                              DEMANGLE_COMPONENT_BINARY_ARGS,
  3146.                                              left, right));
  3147.           }
  3148.         case 3:
  3149.           {
  3150.             struct demangle_component *first;
  3151.             struct demangle_component *second;
  3152.             struct demangle_component *third;
  3153.  
  3154.             if (!strcmp (code, "qu"))
  3155.               {
  3156.                 /* ?: expression.  */
  3157.                 first = d_expression (di);
  3158.                 second = d_expression (di);
  3159.                 third = d_expression (di);
  3160.               }
  3161.             else if (code[0] == 'n')
  3162.               {
  3163.                 /* new-expression.  */
  3164.                 if (code[1] != 'w' && code[1] != 'a')
  3165.                   return NULL;
  3166.                 first = d_exprlist (di, '_');
  3167.                 second = cplus_demangle_type (di);
  3168.                 if (d_peek_char (di) == 'E')
  3169.                   {
  3170.                     d_advance (di, 1);
  3171.                     third = NULL;
  3172.                   }
  3173.                 else if (d_peek_char (di) == 'p'
  3174.                          && d_peek_next_char (di) == 'i')
  3175.                   {
  3176.                     /* Parenthesized initializer.  */
  3177.                     d_advance (di, 2);
  3178.                     third = d_exprlist (di, 'E');
  3179.                   }
  3180.                 else if (d_peek_char (di) == 'i'
  3181.                          && d_peek_next_char (di) == 'l')
  3182.                   /* initializer-list.  */
  3183.                   third = d_expression (di);
  3184.                 else
  3185.                   return NULL;
  3186.               }
  3187.             else
  3188.               return NULL;
  3189.             return d_make_comp (di, DEMANGLE_COMPONENT_TRINARY, op,
  3190.                                 d_make_comp (di,
  3191.                                              DEMANGLE_COMPONENT_TRINARY_ARG1,
  3192.                                              first,
  3193.                                              d_make_comp (di,
  3194.                                                           DEMANGLE_COMPONENT_TRINARY_ARG2,
  3195.                                                           second, third)));
  3196.           }
  3197.         default:
  3198.           return NULL;
  3199.         }
  3200.     }
  3201. }
  3202.  
  3203. /* <expr-primary> ::= L <type> <(value) number> E
  3204.                   ::= L <type> <(value) float> E
  3205.                   ::= L <mangled-name> E
  3206. */
  3207.  
  3208. static struct demangle_component *
  3209. d_expr_primary (struct d_info *di)
  3210. {
  3211.   struct demangle_component *ret;
  3212.  
  3213.   if (! d_check_char (di, 'L'))
  3214.     return NULL;
  3215.   if (d_peek_char (di) == '_'
  3216.       /* Workaround for G++ bug; see comment in write_template_arg.  */
  3217.       || d_peek_char (di) == 'Z')
  3218.     ret = cplus_demangle_mangled_name (di, 0);
  3219.   else
  3220.     {
  3221.       struct demangle_component *type;
  3222.       enum demangle_component_type t;
  3223.       const char *s;
  3224.  
  3225.       type = cplus_demangle_type (di);
  3226.       if (type == NULL)
  3227.         return NULL;
  3228.  
  3229.       /* If we have a type we know how to print, we aren't going to
  3230.          print the type name itself.  */
  3231.       if (type->type == DEMANGLE_COMPONENT_BUILTIN_TYPE
  3232.           && type->u.s_builtin.type->print != D_PRINT_DEFAULT)
  3233.         di->expansion -= type->u.s_builtin.type->len;
  3234.  
  3235.       /* Rather than try to interpret the literal value, we just
  3236.          collect it as a string.  Note that it's possible to have a
  3237.          floating point literal here.  The ABI specifies that the
  3238.          format of such literals is machine independent.  That's fine,
  3239.          but what's not fine is that versions of g++ up to 3.2 with
  3240.          -fabi-version=1 used upper case letters in the hex constant,
  3241.          and dumped out gcc's internal representation.  That makes it
  3242.          hard to tell where the constant ends, and hard to dump the
  3243.          constant in any readable form anyhow.  We don't attempt to
  3244.          handle these cases.  */
  3245.  
  3246.       t = DEMANGLE_COMPONENT_LITERAL;
  3247.       if (d_peek_char (di) == 'n')
  3248.         {
  3249.           t = DEMANGLE_COMPONENT_LITERAL_NEG;
  3250.           d_advance (di, 1);
  3251.         }
  3252.       s = d_str (di);
  3253.       while (d_peek_char (di) != 'E')
  3254.         {
  3255.           if (d_peek_char (di) == '\0')
  3256.             return NULL;
  3257.           d_advance (di, 1);
  3258.         }
  3259.       ret = d_make_comp (di, t, type, d_make_name (di, s, d_str (di) - s));
  3260.     }
  3261.   if (! d_check_char (di, 'E'))
  3262.     return NULL;
  3263.   return ret;
  3264. }
  3265.  
  3266. /* <local-name> ::= Z <(function) encoding> E <(entity) name> [<discriminator>]
  3267.                 ::= Z <(function) encoding> E s [<discriminator>]
  3268.                 ::= Z <(function) encoding> E d [<parameter> number>] _ <entity name>
  3269. */
  3270.  
  3271. static struct demangle_component *
  3272. d_local_name (struct d_info *di)
  3273. {
  3274.   struct demangle_component *function;
  3275.  
  3276.   if (! d_check_char (di, 'Z'))
  3277.     return NULL;
  3278.  
  3279.   function = d_encoding (di, 0);
  3280.  
  3281.   if (! d_check_char (di, 'E'))
  3282.     return NULL;
  3283.  
  3284.   if (d_peek_char (di) == 's')
  3285.     {
  3286.       d_advance (di, 1);
  3287.       if (! d_discriminator (di))
  3288.         return NULL;
  3289.       return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function,
  3290.                           d_make_name (di, "string literal",
  3291.                                        sizeof "string literal" - 1));
  3292.     }
  3293.   else
  3294.     {
  3295.       struct demangle_component *name;
  3296.       int num = -1;
  3297.  
  3298.       if (d_peek_char (di) == 'd')
  3299.         {
  3300.           /* Default argument scope: d <number> _.  */
  3301.           d_advance (di, 1);
  3302.           num = d_compact_number (di);
  3303.           if (num < 0)
  3304.             return NULL;
  3305.         }
  3306.  
  3307.       name = d_name (di);
  3308.       if (name)
  3309.         switch (name->type)
  3310.           {
  3311.             /* Lambdas and unnamed types have internal discriminators.  */
  3312.           case DEMANGLE_COMPONENT_LAMBDA:
  3313.           case DEMANGLE_COMPONENT_UNNAMED_TYPE:
  3314.             break;
  3315.           default:
  3316.             if (! d_discriminator (di))
  3317.               return NULL;
  3318.           }
  3319.       if (num >= 0)
  3320.         name = d_make_default_arg (di, num, name);
  3321.       return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function, name);
  3322.     }
  3323. }
  3324.  
  3325. /* <discriminator> ::= _ <(non-negative) number>
  3326.  
  3327.    We demangle the discriminator, but we don't print it out.  FIXME:
  3328.    We should print it out in verbose mode.  */
  3329.  
  3330. static int
  3331. d_discriminator (struct d_info *di)
  3332. {
  3333.   long discrim;
  3334.  
  3335.   if (d_peek_char (di) != '_')
  3336.     return 1;
  3337.   d_advance (di, 1);
  3338.   discrim = d_number (di);
  3339.   if (discrim < 0)
  3340.     return 0;
  3341.   return 1;
  3342. }
  3343.  
  3344. /* <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _ */
  3345.  
  3346. static struct demangle_component *
  3347. d_lambda (struct d_info *di)
  3348. {
  3349.   struct demangle_component *tl;
  3350.   struct demangle_component *ret;
  3351.   int num;
  3352.  
  3353.   if (! d_check_char (di, 'U'))
  3354.     return NULL;
  3355.   if (! d_check_char (di, 'l'))
  3356.     return NULL;
  3357.  
  3358.   tl = d_parmlist (di);
  3359.   if (tl == NULL)
  3360.     return NULL;
  3361.  
  3362.   if (! d_check_char (di, 'E'))
  3363.     return NULL;
  3364.  
  3365.   num = d_compact_number (di);
  3366.   if (num < 0)
  3367.     return NULL;
  3368.  
  3369.   ret = d_make_empty (di);
  3370.   if (ret)
  3371.     {
  3372.       ret->type = DEMANGLE_COMPONENT_LAMBDA;
  3373.       ret->u.s_unary_num.sub = tl;
  3374.       ret->u.s_unary_num.num = num;
  3375.     }
  3376.  
  3377.   if (! d_add_substitution (di, ret))
  3378.     return NULL;
  3379.  
  3380.   return ret;
  3381. }
  3382.  
  3383. /* <unnamed-type-name> ::= Ut [ <nonnegative number> ] _ */
  3384.  
  3385. static struct demangle_component *
  3386. d_unnamed_type (struct d_info *di)
  3387. {
  3388.   struct demangle_component *ret;
  3389.   long num;
  3390.  
  3391.   if (! d_check_char (di, 'U'))
  3392.     return NULL;
  3393.   if (! d_check_char (di, 't'))
  3394.     return NULL;
  3395.  
  3396.   num = d_compact_number (di);
  3397.   if (num < 0)
  3398.     return NULL;
  3399.  
  3400.   ret = d_make_empty (di);
  3401.   if (ret)
  3402.     {
  3403.       ret->type = DEMANGLE_COMPONENT_UNNAMED_TYPE;
  3404.       ret->u.s_number.number = num;
  3405.     }
  3406.  
  3407.   if (! d_add_substitution (di, ret))
  3408.     return NULL;
  3409.  
  3410.   return ret;
  3411. }
  3412.  
  3413. /* <clone-suffix> ::= [ . <clone-type-identifier> ] [ . <nonnegative number> ]*
  3414. */
  3415.  
  3416. static struct demangle_component *
  3417. d_clone_suffix (struct d_info *di, struct demangle_component *encoding)
  3418. {
  3419.   const char *suffix = d_str (di);
  3420.   const char *pend = suffix;
  3421.   struct demangle_component *n;
  3422.  
  3423.   if (*pend == '.' && (IS_LOWER (pend[1]) || pend[1] == '_'))
  3424.     {
  3425.       pend += 2;
  3426.       while (IS_LOWER (*pend) || *pend == '_')
  3427.         ++pend;
  3428.     }
  3429.   while (*pend == '.' && IS_DIGIT (pend[1]))
  3430.     {
  3431.       pend += 2;
  3432.       while (IS_DIGIT (*pend))
  3433.         ++pend;
  3434.     }
  3435.   d_advance (di, pend - suffix);
  3436.   n = d_make_name (di, suffix, pend - suffix);
  3437.   return d_make_comp (di, DEMANGLE_COMPONENT_CLONE, encoding, n);
  3438. }
  3439.  
  3440. /* Add a new substitution.  */
  3441.  
  3442. static int
  3443. d_add_substitution (struct d_info *di, struct demangle_component *dc)
  3444. {
  3445.   if (dc == NULL)
  3446.     return 0;
  3447.   if (di->next_sub >= di->num_subs)
  3448.     return 0;
  3449.   di->subs[di->next_sub] = dc;
  3450.   ++di->next_sub;
  3451.   return 1;
  3452. }
  3453.  
  3454. /* <substitution> ::= S <seq-id> _
  3455.                   ::= S_
  3456.                   ::= St
  3457.                   ::= Sa
  3458.                   ::= Sb
  3459.                   ::= Ss
  3460.                   ::= Si
  3461.                   ::= So
  3462.                   ::= Sd
  3463.  
  3464.    If PREFIX is non-zero, then this type is being used as a prefix in
  3465.    a qualified name.  In this case, for the standard substitutions, we
  3466.    need to check whether we are being used as a prefix for a
  3467.    constructor or destructor, and return a full template name.
  3468.    Otherwise we will get something like std::iostream::~iostream()
  3469.    which does not correspond particularly well to any function which
  3470.    actually appears in the source.
  3471. */
  3472.  
  3473. static const struct d_standard_sub_info standard_subs[] =
  3474. {
  3475.   { 't', NL ("std"),
  3476.     NL ("std"),
  3477.     NULL, 0 },
  3478.   { 'a', NL ("std::allocator"),
  3479.     NL ("std::allocator"),
  3480.     NL ("allocator") },
  3481.   { 'b', NL ("std::basic_string"),
  3482.     NL ("std::basic_string"),
  3483.     NL ("basic_string") },
  3484.   { 's', NL ("std::string"),
  3485.     NL ("std::basic_string<char, std::char_traits<char>, std::allocator<char> >"),
  3486.     NL ("basic_string") },
  3487.   { 'i', NL ("std::istream"),
  3488.     NL ("std::basic_istream<char, std::char_traits<char> >"),
  3489.     NL ("basic_istream") },
  3490.   { 'o', NL ("std::ostream"),
  3491.     NL ("std::basic_ostream<char, std::char_traits<char> >"),
  3492.     NL ("basic_ostream") },
  3493.   { 'd', NL ("std::iostream"),
  3494.     NL ("std::basic_iostream<char, std::char_traits<char> >"),
  3495.     NL ("basic_iostream") }
  3496. };
  3497.  
  3498. static struct demangle_component *
  3499. d_substitution (struct d_info *di, int prefix)
  3500. {
  3501.   char c;
  3502.  
  3503.   if (! d_check_char (di, 'S'))
  3504.     return NULL;
  3505.  
  3506.   c = d_next_char (di);
  3507.   if (c == '_' || IS_DIGIT (c) || IS_UPPER (c))
  3508.     {
  3509.       unsigned int id;
  3510.  
  3511.       id = 0;
  3512.       if (c != '_')
  3513.         {
  3514.           do
  3515.             {
  3516.               unsigned int new_id;
  3517.  
  3518.               if (IS_DIGIT (c))
  3519.                 new_id = id * 36 + c - '0';
  3520.               else if (IS_UPPER (c))
  3521.                 new_id = id * 36 + c - 'A' + 10;
  3522.               else
  3523.                 return NULL;
  3524.               if (new_id < id)
  3525.                 return NULL;
  3526.               id = new_id;
  3527.               c = d_next_char (di);
  3528.             }
  3529.           while (c != '_');
  3530.  
  3531.           ++id;
  3532.         }
  3533.  
  3534.       if (id >= (unsigned int) di->next_sub)
  3535.         return NULL;
  3536.  
  3537.       ++di->did_subs;
  3538.  
  3539.       return di->subs[id];
  3540.     }
  3541.   else
  3542.     {
  3543.       int verbose;
  3544.       const struct d_standard_sub_info *p;
  3545.       const struct d_standard_sub_info *pend;
  3546.  
  3547.       verbose = (di->options & DMGL_VERBOSE) != 0;
  3548.       if (! verbose && prefix)
  3549.         {
  3550.           char peek;
  3551.  
  3552.           peek = d_peek_char (di);
  3553.           if (peek == 'C' || peek == 'D')
  3554.             verbose = 1;
  3555.         }
  3556.  
  3557.       pend = (&standard_subs[0]
  3558.               + sizeof standard_subs / sizeof standard_subs[0]);
  3559.       for (p = &standard_subs[0]; p < pend; ++p)
  3560.         {
  3561.           if (c == p->code)
  3562.             {
  3563.               const char *s;
  3564.               int len;
  3565.  
  3566.               if (p->set_last_name != NULL)
  3567.                 di->last_name = d_make_sub (di, p->set_last_name,
  3568.                                             p->set_last_name_len);
  3569.               if (verbose)
  3570.                 {
  3571.                   s = p->full_expansion;
  3572.                   len = p->full_len;
  3573.                 }
  3574.               else
  3575.                 {
  3576.                   s = p->simple_expansion;
  3577.                   len = p->simple_len;
  3578.                 }
  3579.               di->expansion += len;
  3580.               return d_make_sub (di, s, len);
  3581.             }
  3582.         }
  3583.  
  3584.       return NULL;
  3585.     }
  3586. }
  3587.  
  3588. /* Initialize a growable string.  */
  3589.  
  3590. static void
  3591. d_growable_string_init (struct d_growable_string *dgs, size_t estimate)
  3592. {
  3593.   dgs->buf = NULL;
  3594.   dgs->len = 0;
  3595.   dgs->alc = 0;
  3596.   dgs->allocation_failure = 0;
  3597.  
  3598.   if (estimate > 0)
  3599.     d_growable_string_resize (dgs, estimate);
  3600. }
  3601.  
  3602. /* Grow a growable string to a given size.  */
  3603.  
  3604. static inline void
  3605. d_growable_string_resize (struct d_growable_string *dgs, size_t need)
  3606. {
  3607.   size_t newalc;
  3608.   char *newbuf;
  3609.  
  3610.   if (dgs->allocation_failure)
  3611.     return;
  3612.  
  3613.   /* Start allocation at two bytes to avoid any possibility of confusion
  3614.      with the special value of 1 used as a return in *palc to indicate
  3615.      allocation failures.  */
  3616.   newalc = dgs->alc > 0 ? dgs->alc : 2;
  3617.   while (newalc < need)
  3618.     newalc <<= 1;
  3619.  
  3620.   newbuf = (char *) realloc (dgs->buf, newalc);
  3621.   if (newbuf == NULL)
  3622.     {
  3623.       free (dgs->buf);
  3624.       dgs->buf = NULL;
  3625.       dgs->len = 0;
  3626.       dgs->alc = 0;
  3627.       dgs->allocation_failure = 1;
  3628.       return;
  3629.     }
  3630.   dgs->buf = newbuf;
  3631.   dgs->alc = newalc;
  3632. }
  3633.  
  3634. /* Append a buffer to a growable string.  */
  3635.  
  3636. static inline void
  3637. d_growable_string_append_buffer (struct d_growable_string *dgs,
  3638.                                  const char *s, size_t l)
  3639. {
  3640.   size_t need;
  3641.  
  3642.   need = dgs->len + l + 1;
  3643.   if (need > dgs->alc)
  3644.     d_growable_string_resize (dgs, need);
  3645.  
  3646.   if (dgs->allocation_failure)
  3647.     return;
  3648.  
  3649.   memcpy (dgs->buf + dgs->len, s, l);
  3650.   dgs->buf[dgs->len + l] = '\0';
  3651.   dgs->len += l;
  3652. }
  3653.  
  3654. /* Bridge growable strings to the callback mechanism.  */
  3655.  
  3656. static void
  3657. d_growable_string_callback_adapter (const char *s, size_t l, void *opaque)
  3658. {
  3659.   struct d_growable_string *dgs = (struct d_growable_string*) opaque;
  3660.  
  3661.   d_growable_string_append_buffer (dgs, s, l);
  3662. }
  3663.  
  3664. /* Initialize a print information structure.  */
  3665.  
  3666. static void
  3667. d_print_init (struct d_print_info *dpi, demangle_callbackref callback,
  3668.               void *opaque)
  3669. {
  3670.   dpi->len = 0;
  3671.   dpi->last_char = '\0';
  3672.   dpi->templates = NULL;
  3673.   dpi->modifiers = NULL;
  3674.   dpi->pack_index = 0;
  3675.   dpi->flush_count = 0;
  3676.  
  3677.   dpi->callback = callback;
  3678.   dpi->opaque = opaque;
  3679.  
  3680.   dpi->demangle_failure = 0;
  3681. }
  3682.  
  3683. /* Indicate that an error occurred during printing, and test for error.  */
  3684.  
  3685. static inline void
  3686. d_print_error (struct d_print_info *dpi)
  3687. {
  3688.   dpi->demangle_failure = 1;
  3689. }
  3690.  
  3691. static inline int
  3692. d_print_saw_error (struct d_print_info *dpi)
  3693. {
  3694.   return dpi->demangle_failure != 0;
  3695. }
  3696.  
  3697. /* Flush buffered characters to the callback.  */
  3698.  
  3699. static inline void
  3700. d_print_flush (struct d_print_info *dpi)
  3701. {
  3702.   dpi->buf[dpi->len] = '\0';
  3703.   dpi->callback (dpi->buf, dpi->len, dpi->opaque);
  3704.   dpi->len = 0;
  3705.   dpi->flush_count++;
  3706. }
  3707.  
  3708. /* Append characters and buffers for printing.  */
  3709.  
  3710. static inline void
  3711. d_append_char (struct d_print_info *dpi, char c)
  3712. {
  3713.   if (dpi->len == sizeof (dpi->buf) - 1)
  3714.     d_print_flush (dpi);
  3715.  
  3716.   dpi->buf[dpi->len++] = c;
  3717.   dpi->last_char = c;
  3718. }
  3719.  
  3720. static inline void
  3721. d_append_buffer (struct d_print_info *dpi, const char *s, size_t l)
  3722. {
  3723.   size_t i;
  3724.  
  3725.   for (i = 0; i < l; i++)
  3726.     d_append_char (dpi, s[i]);
  3727. }
  3728.  
  3729. static inline void
  3730. d_append_string (struct d_print_info *dpi, const char *s)
  3731. {
  3732.   d_append_buffer (dpi, s, strlen (s));
  3733. }
  3734.  
  3735. static inline void
  3736. d_append_num (struct d_print_info *dpi, long l)
  3737. {
  3738.   char buf[25];
  3739.   sprintf (buf,"%ld", l);
  3740.   d_append_string (dpi, buf);
  3741. }
  3742.  
  3743. static inline char
  3744. d_last_char (struct d_print_info *dpi)
  3745. {
  3746.   return dpi->last_char;
  3747. }
  3748.  
  3749. /* Turn components into a human readable string.  OPTIONS is the
  3750.    options bits passed to the demangler.  DC is the tree to print.
  3751.    CALLBACK is a function to call to flush demangled string segments
  3752.    as they fill the intermediate buffer, and OPAQUE is a generalized
  3753.    callback argument.  On success, this returns 1.  On failure,
  3754.    it returns 0, indicating a bad parse.  It does not use heap
  3755.    memory to build an output string, so cannot encounter memory
  3756.    allocation failure.  */
  3757.  
  3758. CP_STATIC_IF_GLIBCPP_V3
  3759. int
  3760. cplus_demangle_print_callback (int options,
  3761.                                const struct demangle_component *dc,
  3762.                                demangle_callbackref callback, void *opaque)
  3763. {
  3764.   struct d_print_info dpi;
  3765.  
  3766.   d_print_init (&dpi, callback, opaque);
  3767.  
  3768.   d_print_comp (&dpi, options, dc);
  3769.  
  3770.   d_print_flush (&dpi);
  3771.  
  3772.   return ! d_print_saw_error (&dpi);
  3773. }
  3774.  
  3775. /* Turn components into a human readable string.  OPTIONS is the
  3776.    options bits passed to the demangler.  DC is the tree to print.
  3777.    ESTIMATE is a guess at the length of the result.  This returns a
  3778.    string allocated by malloc, or NULL on error.  On success, this
  3779.    sets *PALC to the size of the allocated buffer.  On failure, this
  3780.    sets *PALC to 0 for a bad parse, or to 1 for a memory allocation
  3781.    failure.  */
  3782.  
  3783. CP_STATIC_IF_GLIBCPP_V3
  3784. char *
  3785. cplus_demangle_print (int options, const struct demangle_component *dc,
  3786.                       int estimate, size_t *palc)
  3787. {
  3788.   struct d_growable_string dgs;
  3789.  
  3790.   d_growable_string_init (&dgs, estimate);
  3791.  
  3792.   if (! cplus_demangle_print_callback (options, dc,
  3793.                                        d_growable_string_callback_adapter,
  3794.                                        &dgs))
  3795.     {
  3796.       free (dgs.buf);
  3797.       *palc = 0;
  3798.       return NULL;
  3799.     }
  3800.  
  3801.   *palc = dgs.allocation_failure ? 1 : dgs.alc;
  3802.   return dgs.buf;
  3803. }
  3804.  
  3805. /* Returns the I'th element of the template arglist ARGS, or NULL on
  3806.    failure.  */
  3807.  
  3808. static struct demangle_component *
  3809. d_index_template_argument (struct demangle_component *args, int i)
  3810. {
  3811.   struct demangle_component *a;
  3812.  
  3813.   for (a = args;
  3814.        a != NULL;
  3815.        a = d_right (a))
  3816.     {
  3817.       if (a->type != DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
  3818.         return NULL;
  3819.       if (i <= 0)
  3820.         break;
  3821.       --i;
  3822.     }
  3823.   if (i != 0 || a == NULL)
  3824.     return NULL;
  3825.  
  3826.   return d_left (a);
  3827. }
  3828.  
  3829. /* Returns the template argument from the current context indicated by DC,
  3830.    which is a DEMANGLE_COMPONENT_TEMPLATE_PARAM, or NULL.  */
  3831.  
  3832. static struct demangle_component *
  3833. d_lookup_template_argument (struct d_print_info *dpi,
  3834.                             const struct demangle_component *dc)
  3835. {
  3836.   if (dpi->templates == NULL)
  3837.     {
  3838.       d_print_error (dpi);
  3839.       return NULL;
  3840.     }
  3841.        
  3842.   return d_index_template_argument
  3843.     (d_right (dpi->templates->template_decl),
  3844.      dc->u.s_number.number);
  3845. }
  3846.  
  3847. /* Returns a template argument pack used in DC (any will do), or NULL.  */
  3848.  
  3849. static struct demangle_component *
  3850. d_find_pack (struct d_print_info *dpi,
  3851.              const struct demangle_component *dc)
  3852. {
  3853.   struct demangle_component *a;
  3854.   if (dc == NULL)
  3855.     return NULL;
  3856.  
  3857.   switch (dc->type)
  3858.     {
  3859.     case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
  3860.       a = d_lookup_template_argument (dpi, dc);
  3861.       if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
  3862.         return a;
  3863.       return NULL;
  3864.  
  3865.     case DEMANGLE_COMPONENT_PACK_EXPANSION:
  3866.       return NULL;
  3867.      
  3868.     case DEMANGLE_COMPONENT_LAMBDA:
  3869.     case DEMANGLE_COMPONENT_NAME:
  3870.     case DEMANGLE_COMPONENT_TAGGED_NAME:
  3871.     case DEMANGLE_COMPONENT_OPERATOR:
  3872.     case DEMANGLE_COMPONENT_BUILTIN_TYPE:
  3873.     case DEMANGLE_COMPONENT_SUB_STD:
  3874.     case DEMANGLE_COMPONENT_CHARACTER:
  3875.     case DEMANGLE_COMPONENT_FUNCTION_PARAM:
  3876.     case DEMANGLE_COMPONENT_UNNAMED_TYPE:
  3877.       return NULL;
  3878.  
  3879.     case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
  3880.       return d_find_pack (dpi, dc->u.s_extended_operator.name);
  3881.     case DEMANGLE_COMPONENT_CTOR:
  3882.       return d_find_pack (dpi, dc->u.s_ctor.name);
  3883.     case DEMANGLE_COMPONENT_DTOR:
  3884.       return d_find_pack (dpi, dc->u.s_dtor.name);
  3885.  
  3886.     default:
  3887.       a = d_find_pack (dpi, d_left (dc));
  3888.       if (a)
  3889.         return a;
  3890.       return d_find_pack (dpi, d_right (dc));
  3891.     }
  3892. }
  3893.  
  3894. /* Returns the length of the template argument pack DC.  */
  3895.  
  3896. static int
  3897. d_pack_length (const struct demangle_component *dc)
  3898. {
  3899.   int count = 0;
  3900.   while (dc && dc->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST
  3901.          && d_left (dc) != NULL)
  3902.     {
  3903.       ++count;
  3904.       dc = d_right (dc);
  3905.     }
  3906.   return count;
  3907. }
  3908.  
  3909. /* DC is a component of a mangled expression.  Print it, wrapped in parens
  3910.    if needed.  */
  3911.  
  3912. static void
  3913. d_print_subexpr (struct d_print_info *dpi, int options,
  3914.                  const struct demangle_component *dc)
  3915. {
  3916.   int simple = 0;
  3917.   if (dc->type == DEMANGLE_COMPONENT_NAME
  3918.       || dc->type == DEMANGLE_COMPONENT_QUAL_NAME
  3919.       || dc->type == DEMANGLE_COMPONENT_INITIALIZER_LIST
  3920.       || dc->type == DEMANGLE_COMPONENT_FUNCTION_PARAM)
  3921.     simple = 1;
  3922.   if (!simple)
  3923.     d_append_char (dpi, '(');
  3924.   d_print_comp (dpi, options, dc);
  3925.   if (!simple)
  3926.     d_append_char (dpi, ')');
  3927. }
  3928.  
  3929. /* Subroutine to handle components.  */
  3930.  
  3931. static void
  3932. d_print_comp (struct d_print_info *dpi, int options,
  3933.               const struct demangle_component *dc)
  3934. {
  3935.   /* Magic variable to let reference smashing skip over the next modifier
  3936.      without needing to modify *dc.  */
  3937.   const struct demangle_component *mod_inner = NULL;
  3938.  
  3939.   if (dc == NULL)
  3940.     {
  3941.       d_print_error (dpi);
  3942.       return;
  3943.     }
  3944.   if (d_print_saw_error (dpi))
  3945.     return;
  3946.  
  3947.   switch (dc->type)
  3948.     {
  3949.     case DEMANGLE_COMPONENT_NAME:
  3950.       if ((options & DMGL_JAVA) == 0)
  3951.         d_append_buffer (dpi, dc->u.s_name.s, dc->u.s_name.len);
  3952.       else
  3953.         d_print_java_identifier (dpi, dc->u.s_name.s, dc->u.s_name.len);
  3954.       return;
  3955.  
  3956.     case DEMANGLE_COMPONENT_TAGGED_NAME:
  3957.       d_print_comp (dpi, options, d_left (dc));
  3958.       d_append_string (dpi, "[abi:");
  3959.       d_print_comp (dpi, options, d_right (dc));
  3960.       d_append_char (dpi, ']');
  3961.       return;
  3962.  
  3963.     case DEMANGLE_COMPONENT_QUAL_NAME:
  3964.     case DEMANGLE_COMPONENT_LOCAL_NAME:
  3965.       d_print_comp (dpi, options, d_left (dc));
  3966.       if ((options & DMGL_JAVA) == 0)
  3967.         d_append_string (dpi, "::");
  3968.       else
  3969.         d_append_char (dpi, '.');
  3970.       {
  3971.         struct demangle_component *local_name = d_right (dc);
  3972.         if (local_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
  3973.           {
  3974.             d_append_string (dpi, "{default arg#");
  3975.             d_append_num (dpi, local_name->u.s_unary_num.num + 1);
  3976.             d_append_string (dpi, "}::");
  3977.             local_name = local_name->u.s_unary_num.sub;
  3978.           }
  3979.         d_print_comp (dpi, options, local_name);
  3980.       }
  3981.       return;
  3982.  
  3983.     case DEMANGLE_COMPONENT_TYPED_NAME:
  3984.       {
  3985.         struct d_print_mod *hold_modifiers;
  3986.         struct demangle_component *typed_name;
  3987.         struct d_print_mod adpm[4];
  3988.         unsigned int i;
  3989.         struct d_print_template dpt;
  3990.  
  3991.         /* Pass the name down to the type so that it can be printed in
  3992.            the right place for the type.  We also have to pass down
  3993.            any CV-qualifiers, which apply to the this parameter.  */
  3994.         hold_modifiers = dpi->modifiers;
  3995.         dpi->modifiers = 0;
  3996.         i = 0;
  3997.         typed_name = d_left (dc);
  3998.         while (typed_name != NULL)
  3999.           {
  4000.             if (i >= sizeof adpm / sizeof adpm[0])
  4001.               {
  4002.                 d_print_error (dpi);
  4003.                 return;
  4004.               }
  4005.  
  4006.             adpm[i].next = dpi->modifiers;
  4007.             dpi->modifiers = &adpm[i];
  4008.             adpm[i].mod = typed_name;
  4009.             adpm[i].printed = 0;
  4010.             adpm[i].templates = dpi->templates;
  4011.             ++i;
  4012.  
  4013.             if (typed_name->type != DEMANGLE_COMPONENT_RESTRICT_THIS
  4014.                 && typed_name->type != DEMANGLE_COMPONENT_VOLATILE_THIS
  4015.                 && typed_name->type != DEMANGLE_COMPONENT_CONST_THIS
  4016.                 && typed_name->type != DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
  4017.                 && typed_name->type != DEMANGLE_COMPONENT_REFERENCE_THIS)
  4018.               break;
  4019.  
  4020.             typed_name = d_left (typed_name);
  4021.           }
  4022.  
  4023.         if (typed_name == NULL)
  4024.           {
  4025.             d_print_error (dpi);
  4026.             return;
  4027.           }
  4028.  
  4029.         /* If typed_name is a template, then it applies to the
  4030.            function type as well.  */
  4031.         if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
  4032.           {
  4033.             dpt.next = dpi->templates;
  4034.             dpi->templates = &dpt;
  4035.             dpt.template_decl = typed_name;
  4036.           }
  4037.  
  4038.         /* If typed_name is a DEMANGLE_COMPONENT_LOCAL_NAME, then
  4039.            there may be CV-qualifiers on its right argument which
  4040.            really apply here; this happens when parsing a class which
  4041.            is local to a function.  */
  4042.         if (typed_name->type == DEMANGLE_COMPONENT_LOCAL_NAME)
  4043.           {
  4044.             struct demangle_component *local_name;
  4045.  
  4046.             local_name = d_right (typed_name);
  4047.             if (local_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
  4048.               local_name = local_name->u.s_unary_num.sub;
  4049.             while (local_name->type == DEMANGLE_COMPONENT_RESTRICT_THIS
  4050.                    || local_name->type == DEMANGLE_COMPONENT_VOLATILE_THIS
  4051.                    || local_name->type == DEMANGLE_COMPONENT_CONST_THIS
  4052.                    || local_name->type == DEMANGLE_COMPONENT_REFERENCE_THIS
  4053.                    || (local_name->type
  4054.                        == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS))
  4055.               {
  4056.                 if (i >= sizeof adpm / sizeof adpm[0])
  4057.                   {
  4058.                     d_print_error (dpi);
  4059.                     return;
  4060.                   }
  4061.  
  4062.                 adpm[i] = adpm[i - 1];
  4063.                 adpm[i].next = &adpm[i - 1];
  4064.                 dpi->modifiers = &adpm[i];
  4065.  
  4066.                 adpm[i - 1].mod = local_name;
  4067.                 adpm[i - 1].printed = 0;
  4068.                 adpm[i - 1].templates = dpi->templates;
  4069.                 ++i;
  4070.  
  4071.                 local_name = d_left (local_name);
  4072.               }
  4073.           }
  4074.  
  4075.         d_print_comp (dpi, options, d_right (dc));
  4076.  
  4077.         if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
  4078.           dpi->templates = dpt.next;
  4079.  
  4080.         /* If the modifiers didn't get printed by the type, print them
  4081.            now.  */
  4082.         while (i > 0)
  4083.           {
  4084.             --i;
  4085.             if (! adpm[i].printed)
  4086.               {
  4087.                 d_append_char (dpi, ' ');
  4088.                 d_print_mod (dpi, options, adpm[i].mod);
  4089.               }
  4090.           }
  4091.  
  4092.         dpi->modifiers = hold_modifiers;
  4093.  
  4094.         return;
  4095.       }
  4096.  
  4097.     case DEMANGLE_COMPONENT_TEMPLATE:
  4098.       {
  4099.         struct d_print_mod *hold_dpm;
  4100.         struct demangle_component *dcl;
  4101.  
  4102.         /* Don't push modifiers into a template definition.  Doing so
  4103.            could give the wrong definition for a template argument.
  4104.            Instead, treat the template essentially as a name.  */
  4105.  
  4106.         hold_dpm = dpi->modifiers;
  4107.         dpi->modifiers = NULL;
  4108.  
  4109.         dcl = d_left (dc);
  4110.  
  4111.         if ((options & DMGL_JAVA) != 0
  4112.             && dcl->type == DEMANGLE_COMPONENT_NAME
  4113.             && dcl->u.s_name.len == 6
  4114.             && strncmp (dcl->u.s_name.s, "JArray", 6) == 0)
  4115.           {
  4116.             /* Special-case Java arrays, so that JArray<TYPE> appears
  4117.                instead as TYPE[].  */
  4118.  
  4119.             d_print_comp (dpi, options, d_right (dc));
  4120.             d_append_string (dpi, "[]");
  4121.           }
  4122.         else
  4123.           {
  4124.             d_print_comp (dpi, options, dcl);
  4125.             if (d_last_char (dpi) == '<')
  4126.               d_append_char (dpi, ' ');
  4127.             d_append_char (dpi, '<');
  4128.             d_print_comp (dpi, options, d_right (dc));
  4129.             /* Avoid generating two consecutive '>' characters, to avoid
  4130.                the C++ syntactic ambiguity.  */
  4131.             if (d_last_char (dpi) == '>')
  4132.               d_append_char (dpi, ' ');
  4133.             d_append_char (dpi, '>');
  4134.           }
  4135.  
  4136.         dpi->modifiers = hold_dpm;
  4137.  
  4138.         return;
  4139.       }
  4140.  
  4141.     case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
  4142.       {
  4143.         struct d_print_template *hold_dpt;
  4144.         struct demangle_component *a = d_lookup_template_argument (dpi, dc);
  4145.  
  4146.         if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
  4147.           a = d_index_template_argument (a, dpi->pack_index);
  4148.  
  4149.         if (a == NULL)
  4150.           {
  4151.             d_print_error (dpi);
  4152.             return;
  4153.           }
  4154.  
  4155.         /* While processing this parameter, we need to pop the list of
  4156.            templates.  This is because the template parameter may
  4157.            itself be a reference to a parameter of an outer
  4158.            template.  */
  4159.  
  4160.         hold_dpt = dpi->templates;
  4161.         dpi->templates = hold_dpt->next;
  4162.  
  4163.         d_print_comp (dpi, options, a);
  4164.  
  4165.         dpi->templates = hold_dpt;
  4166.  
  4167.         return;
  4168.       }
  4169.  
  4170.     case DEMANGLE_COMPONENT_CTOR:
  4171.       d_print_comp (dpi, options, dc->u.s_ctor.name);
  4172.       return;
  4173.  
  4174.     case DEMANGLE_COMPONENT_DTOR:
  4175.       d_append_char (dpi, '~');
  4176.       d_print_comp (dpi, options, dc->u.s_dtor.name);
  4177.       return;
  4178.  
  4179.     case DEMANGLE_COMPONENT_VTABLE:
  4180.       d_append_string (dpi, "vtable for ");
  4181.       d_print_comp (dpi, options, d_left (dc));
  4182.       return;
  4183.  
  4184.     case DEMANGLE_COMPONENT_VTT:
  4185.       d_append_string (dpi, "VTT for ");
  4186.       d_print_comp (dpi, options, d_left (dc));
  4187.       return;
  4188.  
  4189.     case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
  4190.       d_append_string (dpi, "construction vtable for ");
  4191.       d_print_comp (dpi, options, d_left (dc));
  4192.       d_append_string (dpi, "-in-");
  4193.       d_print_comp (dpi, options, d_right (dc));
  4194.       return;
  4195.  
  4196.     case DEMANGLE_COMPONENT_TYPEINFO:
  4197.       d_append_string (dpi, "typeinfo for ");
  4198.       d_print_comp (dpi, options, d_left (dc));
  4199.       return;
  4200.  
  4201.     case DEMANGLE_COMPONENT_TYPEINFO_NAME:
  4202.       d_append_string (dpi, "typeinfo name for ");
  4203.       d_print_comp (dpi, options, d_left (dc));
  4204.       return;
  4205.  
  4206.     case DEMANGLE_COMPONENT_TYPEINFO_FN:
  4207.       d_append_string (dpi, "typeinfo fn for ");
  4208.       d_print_comp (dpi, options, d_left (dc));
  4209.       return;
  4210.  
  4211.     case DEMANGLE_COMPONENT_THUNK:
  4212.       d_append_string (dpi, "non-virtual thunk to ");
  4213.       d_print_comp (dpi, options, d_left (dc));
  4214.       return;
  4215.  
  4216.     case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
  4217.       d_append_string (dpi, "virtual thunk to ");
  4218.       d_print_comp (dpi, options, d_left (dc));
  4219.       return;
  4220.  
  4221.     case DEMANGLE_COMPONENT_COVARIANT_THUNK:
  4222.       d_append_string (dpi, "covariant return thunk to ");
  4223.       d_print_comp (dpi, options, d_left (dc));
  4224.       return;
  4225.  
  4226.     case DEMANGLE_COMPONENT_JAVA_CLASS:
  4227.       d_append_string (dpi, "java Class for ");
  4228.       d_print_comp (dpi, options, d_left (dc));
  4229.       return;
  4230.  
  4231.     case DEMANGLE_COMPONENT_GUARD:
  4232.       d_append_string (dpi, "guard variable for ");
  4233.       d_print_comp (dpi, options, d_left (dc));
  4234.       return;
  4235.  
  4236.     case DEMANGLE_COMPONENT_TLS_INIT:
  4237.       d_append_string (dpi, "TLS init function for ");
  4238.       d_print_comp (dpi, options, d_left (dc));
  4239.       return;
  4240.  
  4241.     case DEMANGLE_COMPONENT_TLS_WRAPPER:
  4242.       d_append_string (dpi, "TLS wrapper function for ");
  4243.       d_print_comp (dpi, options, d_left (dc));
  4244.       return;
  4245.  
  4246.     case DEMANGLE_COMPONENT_REFTEMP:
  4247.       d_append_string (dpi, "reference temporary #");
  4248.       d_print_comp (dpi, options, d_right (dc));
  4249.       d_append_string (dpi, " for ");
  4250.       d_print_comp (dpi, options, d_left (dc));
  4251.       return;
  4252.  
  4253.     case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
  4254.       d_append_string (dpi, "hidden alias for ");
  4255.       d_print_comp (dpi, options, d_left (dc));
  4256.       return;
  4257.  
  4258.     case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
  4259.       d_append_string (dpi, "transaction clone for ");
  4260.       d_print_comp (dpi, options, d_left (dc));
  4261.       return;
  4262.  
  4263.     case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
  4264.       d_append_string (dpi, "non-transaction clone for ");
  4265.       d_print_comp (dpi, options, d_left (dc));
  4266.       return;
  4267.  
  4268.     case DEMANGLE_COMPONENT_SUB_STD:
  4269.       d_append_buffer (dpi, dc->u.s_string.string, dc->u.s_string.len);
  4270.       return;
  4271.  
  4272.     case DEMANGLE_COMPONENT_RESTRICT:
  4273.     case DEMANGLE_COMPONENT_VOLATILE:
  4274.     case DEMANGLE_COMPONENT_CONST:
  4275.       {
  4276.         struct d_print_mod *pdpm;
  4277.  
  4278.         /* When printing arrays, it's possible to have cases where the
  4279.            same CV-qualifier gets pushed on the stack multiple times.
  4280.            We only need to print it once.  */
  4281.  
  4282.         for (pdpm = dpi->modifiers; pdpm != NULL; pdpm = pdpm->next)
  4283.           {
  4284.             if (! pdpm->printed)
  4285.               {
  4286.                 if (pdpm->mod->type != DEMANGLE_COMPONENT_RESTRICT
  4287.                     && pdpm->mod->type != DEMANGLE_COMPONENT_VOLATILE
  4288.                     && pdpm->mod->type != DEMANGLE_COMPONENT_CONST)
  4289.                   break;
  4290.                 if (pdpm->mod->type == dc->type)
  4291.                   {
  4292.                     d_print_comp (dpi, options, d_left (dc));
  4293.                     return;
  4294.                   }
  4295.               }
  4296.           }
  4297.       }
  4298.       goto modifier;
  4299.  
  4300.     case DEMANGLE_COMPONENT_REFERENCE:
  4301.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
  4302.       {
  4303.         /* Handle reference smashing: & + && = &.  */
  4304.         const struct demangle_component *sub = d_left (dc);
  4305.         if (sub->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM)
  4306.           {
  4307.             struct demangle_component *a = d_lookup_template_argument (dpi, sub);
  4308.             if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
  4309.               a = d_index_template_argument (a, dpi->pack_index);
  4310.  
  4311.             if (a == NULL)
  4312.               {
  4313.                 d_print_error (dpi);
  4314.                 return;
  4315.               }
  4316.  
  4317.             sub = a;
  4318.           }
  4319.  
  4320.         if (sub->type == DEMANGLE_COMPONENT_REFERENCE
  4321.             || sub->type == dc->type)
  4322.           dc = sub;
  4323.         else if (sub->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE)
  4324.           mod_inner = d_left (sub);
  4325.       }
  4326.       /* Fall through.  */
  4327.  
  4328.     case DEMANGLE_COMPONENT_RESTRICT_THIS:
  4329.     case DEMANGLE_COMPONENT_VOLATILE_THIS:
  4330.     case DEMANGLE_COMPONENT_CONST_THIS:
  4331.     case DEMANGLE_COMPONENT_REFERENCE_THIS:
  4332.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  4333.     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  4334.     case DEMANGLE_COMPONENT_POINTER:
  4335.     case DEMANGLE_COMPONENT_COMPLEX:
  4336.     case DEMANGLE_COMPONENT_IMAGINARY:
  4337.     modifier:
  4338.       {
  4339.         /* We keep a list of modifiers on the stack.  */
  4340.         struct d_print_mod dpm;
  4341.  
  4342.         dpm.next = dpi->modifiers;
  4343.         dpi->modifiers = &dpm;
  4344.         dpm.mod = dc;
  4345.         dpm.printed = 0;
  4346.         dpm.templates = dpi->templates;
  4347.  
  4348.         if (!mod_inner)
  4349.           mod_inner = d_left (dc);
  4350.  
  4351.         d_print_comp (dpi, options, mod_inner);
  4352.  
  4353.         /* If the modifier didn't get printed by the type, print it
  4354.            now.  */
  4355.         if (! dpm.printed)
  4356.           d_print_mod (dpi, options, dc);
  4357.  
  4358.         dpi->modifiers = dpm.next;
  4359.  
  4360.         return;
  4361.       }
  4362.  
  4363.     case DEMANGLE_COMPONENT_BUILTIN_TYPE:
  4364.       if ((options & DMGL_JAVA) == 0)
  4365.         d_append_buffer (dpi, dc->u.s_builtin.type->name,
  4366.                          dc->u.s_builtin.type->len);
  4367.       else
  4368.         d_append_buffer (dpi, dc->u.s_builtin.type->java_name,
  4369.                          dc->u.s_builtin.type->java_len);
  4370.       return;
  4371.  
  4372.     case DEMANGLE_COMPONENT_VENDOR_TYPE:
  4373.       d_print_comp (dpi, options, d_left (dc));
  4374.       return;
  4375.  
  4376.     case DEMANGLE_COMPONENT_FUNCTION_TYPE:
  4377.       {
  4378.         if ((options & DMGL_RET_POSTFIX) != 0)
  4379.           d_print_function_type (dpi,
  4380.                                  options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
  4381.                                  dc, dpi->modifiers);
  4382.  
  4383.         /* Print return type if present */
  4384.         if (d_left (dc) != NULL && (options & DMGL_RET_POSTFIX) != 0)
  4385.           d_print_comp (dpi, options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
  4386.                         d_left (dc));
  4387.         else if (d_left (dc) != NULL && (options & DMGL_RET_DROP) == 0)
  4388.           {
  4389.             struct d_print_mod dpm;
  4390.  
  4391.             /* We must pass this type down as a modifier in order to
  4392.                print it in the right location.  */
  4393.             dpm.next = dpi->modifiers;
  4394.             dpi->modifiers = &dpm;
  4395.             dpm.mod = dc;
  4396.             dpm.printed = 0;
  4397.             dpm.templates = dpi->templates;
  4398.  
  4399.             d_print_comp (dpi, options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
  4400.                           d_left (dc));
  4401.  
  4402.             dpi->modifiers = dpm.next;
  4403.  
  4404.             if (dpm.printed)
  4405.               return;
  4406.  
  4407.             /* In standard prefix notation, there is a space between the
  4408.                return type and the function signature.  */
  4409.             if ((options & DMGL_RET_POSTFIX) == 0)
  4410.               d_append_char (dpi, ' ');
  4411.           }
  4412.  
  4413.         if ((options & DMGL_RET_POSTFIX) == 0)
  4414.           d_print_function_type (dpi,
  4415.                                  options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
  4416.                                  dc, dpi->modifiers);
  4417.  
  4418.         return;
  4419.       }
  4420.  
  4421.     case DEMANGLE_COMPONENT_ARRAY_TYPE:
  4422.       {
  4423.         struct d_print_mod *hold_modifiers;
  4424.         struct d_print_mod adpm[4];
  4425.         unsigned int i;
  4426.         struct d_print_mod *pdpm;
  4427.  
  4428.         /* We must pass this type down as a modifier in order to print
  4429.            multi-dimensional arrays correctly.  If the array itself is
  4430.            CV-qualified, we act as though the element type were
  4431.            CV-qualified.  We do this by copying the modifiers down
  4432.            rather than fiddling pointers, so that we don't wind up
  4433.            with a d_print_mod higher on the stack pointing into our
  4434.            stack frame after we return.  */
  4435.  
  4436.         hold_modifiers = dpi->modifiers;
  4437.  
  4438.         adpm[0].next = hold_modifiers;
  4439.         dpi->modifiers = &adpm[0];
  4440.         adpm[0].mod = dc;
  4441.         adpm[0].printed = 0;
  4442.         adpm[0].templates = dpi->templates;
  4443.  
  4444.         i = 1;
  4445.         pdpm = hold_modifiers;
  4446.         while (pdpm != NULL
  4447.                && (pdpm->mod->type == DEMANGLE_COMPONENT_RESTRICT
  4448.                    || pdpm->mod->type == DEMANGLE_COMPONENT_VOLATILE
  4449.                    || pdpm->mod->type == DEMANGLE_COMPONENT_CONST))
  4450.           {
  4451.             if (! pdpm->printed)
  4452.               {
  4453.                 if (i >= sizeof adpm / sizeof adpm[0])
  4454.                   {
  4455.                     d_print_error (dpi);
  4456.                     return;
  4457.                   }
  4458.  
  4459.                 adpm[i] = *pdpm;
  4460.                 adpm[i].next = dpi->modifiers;
  4461.                 dpi->modifiers = &adpm[i];
  4462.                 pdpm->printed = 1;
  4463.                 ++i;
  4464.               }
  4465.  
  4466.             pdpm = pdpm->next;
  4467.           }
  4468.  
  4469.         d_print_comp (dpi, options, d_right (dc));
  4470.  
  4471.         dpi->modifiers = hold_modifiers;
  4472.  
  4473.         if (adpm[0].printed)
  4474.           return;
  4475.  
  4476.         while (i > 1)
  4477.           {
  4478.             --i;
  4479.             d_print_mod (dpi, options, adpm[i].mod);
  4480.           }
  4481.  
  4482.         d_print_array_type (dpi, options, dc, dpi->modifiers);
  4483.  
  4484.         return;
  4485.       }
  4486.  
  4487.     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  4488.     case DEMANGLE_COMPONENT_VECTOR_TYPE:
  4489.       {
  4490.         struct d_print_mod dpm;
  4491.  
  4492.         dpm.next = dpi->modifiers;
  4493.         dpi->modifiers = &dpm;
  4494.         dpm.mod = dc;
  4495.         dpm.printed = 0;
  4496.         dpm.templates = dpi->templates;
  4497.  
  4498.         d_print_comp (dpi, options, d_right (dc));
  4499.  
  4500.         /* If the modifier didn't get printed by the type, print it
  4501.            now.  */
  4502.         if (! dpm.printed)
  4503.           d_print_mod (dpi, options, dc);
  4504.  
  4505.         dpi->modifiers = dpm.next;
  4506.  
  4507.         return;
  4508.       }
  4509.  
  4510.     case DEMANGLE_COMPONENT_FIXED_TYPE:
  4511.       if (dc->u.s_fixed.sat)
  4512.         d_append_string (dpi, "_Sat ");
  4513.       /* Don't print "int _Accum".  */
  4514.       if (dc->u.s_fixed.length->u.s_builtin.type
  4515.           != &cplus_demangle_builtin_types['i'-'a'])
  4516.         {
  4517.           d_print_comp (dpi, options, dc->u.s_fixed.length);
  4518.           d_append_char (dpi, ' ');
  4519.         }
  4520.       if (dc->u.s_fixed.accum)
  4521.         d_append_string (dpi, "_Accum");
  4522.       else
  4523.         d_append_string (dpi, "_Fract");
  4524.       return;
  4525.  
  4526.     case DEMANGLE_COMPONENT_ARGLIST:
  4527.     case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
  4528.       if (d_left (dc) != NULL)
  4529.         d_print_comp (dpi, options, d_left (dc));
  4530.       if (d_right (dc) != NULL)
  4531.         {
  4532.           size_t len;
  4533.           unsigned long int flush_count;
  4534.           /* Make sure ", " isn't flushed by d_append_string, otherwise
  4535.              dpi->len -= 2 wouldn't work.  */
  4536.           if (dpi->len >= sizeof (dpi->buf) - 2)
  4537.             d_print_flush (dpi);
  4538.           d_append_string (dpi, ", ");
  4539.           len = dpi->len;
  4540.           flush_count = dpi->flush_count;
  4541.           d_print_comp (dpi, options, d_right (dc));
  4542.           /* If that didn't print anything (which can happen with empty
  4543.              template argument packs), remove the comma and space.  */
  4544.           if (dpi->flush_count == flush_count && dpi->len == len)
  4545.             dpi->len -= 2;
  4546.         }
  4547.       return;
  4548.  
  4549.     case DEMANGLE_COMPONENT_INITIALIZER_LIST:
  4550.       {
  4551.         struct demangle_component *type = d_left (dc);
  4552.         struct demangle_component *list = d_right (dc);
  4553.  
  4554.         if (type)
  4555.           d_print_comp (dpi, options, type);
  4556.         d_append_char (dpi, '{');
  4557.         d_print_comp (dpi, options, list);
  4558.         d_append_char (dpi, '}');
  4559.       }
  4560.       return;
  4561.  
  4562.     case DEMANGLE_COMPONENT_OPERATOR:
  4563.       {
  4564.         const struct demangle_operator_info *op = dc->u.s_operator.op;
  4565.         int len = op->len;
  4566.  
  4567.         d_append_string (dpi, "operator");
  4568.         /* Add a space before new/delete.  */
  4569.         if (IS_LOWER (op->name[0]))
  4570.           d_append_char (dpi, ' ');
  4571.         /* Omit a trailing space.  */
  4572.         if (op->name[len-1] == ' ')
  4573.           --len;
  4574.         d_append_buffer (dpi, op->name, len);
  4575.         return;
  4576.       }
  4577.  
  4578.     case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
  4579.       d_append_string (dpi, "operator ");
  4580.       d_print_comp (dpi, options, dc->u.s_extended_operator.name);
  4581.       return;
  4582.  
  4583.     case DEMANGLE_COMPONENT_CAST:
  4584.       d_append_string (dpi, "operator ");
  4585.       d_print_cast (dpi, options, dc);
  4586.       return;
  4587.  
  4588.     case DEMANGLE_COMPONENT_NULLARY:
  4589.       d_print_expr_op (dpi, options, d_left (dc));
  4590.       return;
  4591.  
  4592.     case DEMANGLE_COMPONENT_UNARY:
  4593.       {
  4594.         struct demangle_component *op = d_left (dc);
  4595.         struct demangle_component *operand = d_right (dc);
  4596.         const char *code = NULL;
  4597.  
  4598.         if (op->type == DEMANGLE_COMPONENT_OPERATOR)
  4599.           {
  4600.             code = op->u.s_operator.op->code;
  4601.             if (!strcmp (code, "ad"))
  4602.               {
  4603.                 /* Don't print the argument list for the address of a
  4604.                    function.  */
  4605.                 if (operand->type == DEMANGLE_COMPONENT_TYPED_NAME
  4606.                     && d_left (operand)->type == DEMANGLE_COMPONENT_QUAL_NAME
  4607.                     && d_right (operand)->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
  4608.                   operand = d_left (operand);
  4609.               }
  4610.             if (operand->type == DEMANGLE_COMPONENT_BINARY_ARGS)
  4611.               {
  4612.                 /* This indicates a suffix operator.  */
  4613.                 operand = d_left (operand);
  4614.                 d_print_subexpr (dpi, options, operand);
  4615.                 d_print_expr_op (dpi, options, op);
  4616.                 return;
  4617.               }
  4618.           }
  4619.  
  4620.         if (op->type != DEMANGLE_COMPONENT_CAST)
  4621.           d_print_expr_op (dpi, options, op);
  4622.         else
  4623.           {
  4624.             d_append_char (dpi, '(');
  4625.             d_print_cast (dpi, options, op);
  4626.             d_append_char (dpi, ')');
  4627.           }
  4628.         if (code && !strcmp (code, "gs"))
  4629.           /* Avoid parens after '::'.  */
  4630.           d_print_comp (dpi, options, operand);
  4631.         else if (code && !strcmp (code, "st"))
  4632.           /* Always print parens for sizeof (type).  */
  4633.           {
  4634.             d_append_char (dpi, '(');
  4635.             d_print_comp (dpi, options, operand);
  4636.             d_append_char (dpi, ')');
  4637.           }
  4638.         else
  4639.           d_print_subexpr (dpi, options, operand);
  4640.       }
  4641.       return;
  4642.  
  4643.     case DEMANGLE_COMPONENT_BINARY:
  4644.       if (d_right (dc)->type != DEMANGLE_COMPONENT_BINARY_ARGS)
  4645.         {
  4646.           d_print_error (dpi);
  4647.           return;
  4648.         }
  4649.  
  4650.       if (op_is_new_cast (d_left (dc)))
  4651.         {
  4652.           d_print_expr_op (dpi, options, d_left (dc));
  4653.           d_append_char (dpi, '<');
  4654.           d_print_comp (dpi, options, d_left (d_right (dc)));
  4655.           d_append_string (dpi, ">(");
  4656.           d_print_comp (dpi, options, d_right (d_right (dc)));
  4657.           d_append_char (dpi, ')');
  4658.           return;
  4659.         }
  4660.  
  4661.       /* We wrap an expression which uses the greater-than operator in
  4662.          an extra layer of parens so that it does not get confused
  4663.          with the '>' which ends the template parameters.  */
  4664.       if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR
  4665.           && d_left (dc)->u.s_operator.op->len == 1
  4666.           && d_left (dc)->u.s_operator.op->name[0] == '>')
  4667.         d_append_char (dpi, '(');
  4668.  
  4669.       if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") == 0
  4670.           && d_left (d_right (dc))->type == DEMANGLE_COMPONENT_TYPED_NAME)
  4671.         {
  4672.           /* Function call used in an expression should not have printed types
  4673.              of the function arguments.  Values of the function arguments still
  4674.              get printed below.  */
  4675.  
  4676.           const struct demangle_component *func = d_left (d_right (dc));
  4677.  
  4678.           if (d_right (func)->type != DEMANGLE_COMPONENT_FUNCTION_TYPE)
  4679.             d_print_error (dpi);
  4680.           d_print_subexpr (dpi, options, d_left (func));
  4681.         }
  4682.       else
  4683.         d_print_subexpr (dpi, options, d_left (d_right (dc)));
  4684.       if (strcmp (d_left (dc)->u.s_operator.op->code, "ix") == 0)
  4685.         {
  4686.           d_append_char (dpi, '[');
  4687.           d_print_comp (dpi, options, d_right (d_right (dc)));
  4688.           d_append_char (dpi, ']');
  4689.         }
  4690.       else
  4691.         {
  4692.           if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") != 0)
  4693.             d_print_expr_op (dpi, options, d_left (dc));
  4694.           d_print_subexpr (dpi, options, d_right (d_right (dc)));
  4695.         }
  4696.  
  4697.       if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR
  4698.           && d_left (dc)->u.s_operator.op->len == 1
  4699.           && d_left (dc)->u.s_operator.op->name[0] == '>')
  4700.         d_append_char (dpi, ')');
  4701.  
  4702.       return;
  4703.  
  4704.     case DEMANGLE_COMPONENT_BINARY_ARGS:
  4705.       /* We should only see this as part of DEMANGLE_COMPONENT_BINARY.  */
  4706.       d_print_error (dpi);
  4707.       return;
  4708.  
  4709.     case DEMANGLE_COMPONENT_TRINARY:
  4710.       if (d_right (dc)->type != DEMANGLE_COMPONENT_TRINARY_ARG1
  4711.           || d_right (d_right (dc))->type != DEMANGLE_COMPONENT_TRINARY_ARG2)
  4712.         {
  4713.           d_print_error (dpi);
  4714.           return;
  4715.         }
  4716.       {
  4717.         struct demangle_component *op = d_left (dc);
  4718.         struct demangle_component *first = d_left (d_right (dc));
  4719.         struct demangle_component *second = d_left (d_right (d_right (dc)));
  4720.         struct demangle_component *third = d_right (d_right (d_right (dc)));
  4721.  
  4722.         if (!strcmp (op->u.s_operator.op->code, "qu"))
  4723.           {
  4724.             d_print_subexpr (dpi, options, first);
  4725.             d_print_expr_op (dpi, options, op);
  4726.             d_print_subexpr (dpi, options, second);
  4727.             d_append_string (dpi, " : ");
  4728.             d_print_subexpr (dpi, options, third);
  4729.           }
  4730.         else
  4731.           {
  4732.             d_append_string (dpi, "new ");
  4733.             if (d_left (first) != NULL)
  4734.               {
  4735.                 d_print_subexpr (dpi, options, first);
  4736.                 d_append_char (dpi, ' ');
  4737.               }
  4738.             d_print_comp (dpi, options, second);
  4739.             if (third)
  4740.               d_print_subexpr (dpi, options, third);
  4741.           }
  4742.       }
  4743.       return;
  4744.  
  4745.     case DEMANGLE_COMPONENT_TRINARY_ARG1:
  4746.     case DEMANGLE_COMPONENT_TRINARY_ARG2:
  4747.       /* We should only see these are part of DEMANGLE_COMPONENT_TRINARY.  */
  4748.       d_print_error (dpi);
  4749.       return;
  4750.  
  4751.     case DEMANGLE_COMPONENT_LITERAL:
  4752.     case DEMANGLE_COMPONENT_LITERAL_NEG:
  4753.       {
  4754.         enum d_builtin_type_print tp;
  4755.  
  4756.         /* For some builtin types, produce simpler output.  */
  4757.         tp = D_PRINT_DEFAULT;
  4758.         if (d_left (dc)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE)
  4759.           {
  4760.             tp = d_left (dc)->u.s_builtin.type->print;
  4761.             switch (tp)
  4762.               {
  4763.               case D_PRINT_INT:
  4764.               case D_PRINT_UNSIGNED:
  4765.               case D_PRINT_LONG:
  4766.               case D_PRINT_UNSIGNED_LONG:
  4767.               case D_PRINT_LONG_LONG:
  4768.               case D_PRINT_UNSIGNED_LONG_LONG:
  4769.                 if (d_right (dc)->type == DEMANGLE_COMPONENT_NAME)
  4770.                   {
  4771.                     if (dc->type == DEMANGLE_COMPONENT_LITERAL_NEG)
  4772.                       d_append_char (dpi, '-');
  4773.                     d_print_comp (dpi, options, d_right (dc));
  4774.                     switch (tp)
  4775.                       {
  4776.                       default:
  4777.                         break;
  4778.                       case D_PRINT_UNSIGNED:
  4779.                         d_append_char (dpi, 'u');
  4780.                         break;
  4781.                       case D_PRINT_LONG:
  4782.                         d_append_char (dpi, 'l');
  4783.                         break;
  4784.                       case D_PRINT_UNSIGNED_LONG:
  4785.                         d_append_string (dpi, "ul");
  4786.                         break;
  4787.                       case D_PRINT_LONG_LONG:
  4788.                         d_append_string (dpi, "ll");
  4789.                         break;
  4790.                       case D_PRINT_UNSIGNED_LONG_LONG:
  4791.                         d_append_string (dpi, "ull");
  4792.                         break;
  4793.                       }
  4794.                     return;
  4795.                   }
  4796.                 break;
  4797.  
  4798.               case D_PRINT_BOOL:
  4799.                 if (d_right (dc)->type == DEMANGLE_COMPONENT_NAME
  4800.                     && d_right (dc)->u.s_name.len == 1
  4801.                     && dc->type == DEMANGLE_COMPONENT_LITERAL)
  4802.                   {
  4803.                     switch (d_right (dc)->u.s_name.s[0])
  4804.                       {
  4805.                       case '0':
  4806.                         d_append_string (dpi, "false");
  4807.                         return;
  4808.                       case '1':
  4809.                         d_append_string (dpi, "true");
  4810.                         return;
  4811.                       default:
  4812.                         break;
  4813.                       }
  4814.                   }
  4815.                 break;
  4816.  
  4817.               default:
  4818.                 break;
  4819.               }
  4820.           }
  4821.  
  4822.         d_append_char (dpi, '(');
  4823.         d_print_comp (dpi, options, d_left (dc));
  4824.         d_append_char (dpi, ')');
  4825.         if (dc->type == DEMANGLE_COMPONENT_LITERAL_NEG)
  4826.           d_append_char (dpi, '-');
  4827.         if (tp == D_PRINT_FLOAT)
  4828.           d_append_char (dpi, '[');
  4829.         d_print_comp (dpi, options, d_right (dc));
  4830.         if (tp == D_PRINT_FLOAT)
  4831.           d_append_char (dpi, ']');
  4832.       }
  4833.       return;
  4834.  
  4835.     case DEMANGLE_COMPONENT_NUMBER:
  4836.       d_append_num (dpi, dc->u.s_number.number);
  4837.       return;
  4838.  
  4839.     case DEMANGLE_COMPONENT_JAVA_RESOURCE:
  4840.       d_append_string (dpi, "java resource ");
  4841.       d_print_comp (dpi, options, d_left (dc));
  4842.       return;
  4843.  
  4844.     case DEMANGLE_COMPONENT_COMPOUND_NAME:
  4845.       d_print_comp (dpi, options, d_left (dc));
  4846.       d_print_comp (dpi, options, d_right (dc));
  4847.       return;
  4848.  
  4849.     case DEMANGLE_COMPONENT_CHARACTER:
  4850.       d_append_char (dpi, dc->u.s_character.character);
  4851.       return;
  4852.  
  4853.     case DEMANGLE_COMPONENT_DECLTYPE:
  4854.       d_append_string (dpi, "decltype (");
  4855.       d_print_comp (dpi, options, d_left (dc));
  4856.       d_append_char (dpi, ')');
  4857.       return;
  4858.  
  4859.     case DEMANGLE_COMPONENT_PACK_EXPANSION:
  4860.       {
  4861.         int len;
  4862.         int i;
  4863.         struct demangle_component *a = d_find_pack (dpi, d_left (dc));
  4864.         if (a == NULL)
  4865.           {
  4866.             /* d_find_pack won't find anything if the only packs involved
  4867.                in this expansion are function parameter packs; in that
  4868.                case, just print the pattern and "...".  */
  4869.             d_print_subexpr (dpi, options, d_left (dc));
  4870.             d_append_string (dpi, "...");
  4871.             return;
  4872.           }
  4873.  
  4874.         len = d_pack_length (a);
  4875.         dc = d_left (dc);
  4876.         for (i = 0; i < len; ++i)
  4877.           {
  4878.             dpi->pack_index = i;
  4879.             d_print_comp (dpi, options, dc);
  4880.             if (i < len-1)
  4881.               d_append_string (dpi, ", ");
  4882.           }
  4883.       }
  4884.       return;
  4885.  
  4886.     case DEMANGLE_COMPONENT_FUNCTION_PARAM:
  4887.       {
  4888.         long num = dc->u.s_number.number;
  4889.         if (num == 0)
  4890.           d_append_string (dpi, "this");
  4891.         else
  4892.           {
  4893.             d_append_string (dpi, "{parm#");
  4894.             d_append_num (dpi, num);
  4895.             d_append_char (dpi, '}');
  4896.           }
  4897.       }
  4898.       return;
  4899.  
  4900.     case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
  4901.       d_append_string (dpi, "global constructors keyed to ");
  4902.       d_print_comp (dpi, options, dc->u.s_binary.left);
  4903.       return;
  4904.  
  4905.     case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
  4906.       d_append_string (dpi, "global destructors keyed to ");
  4907.       d_print_comp (dpi, options, dc->u.s_binary.left);
  4908.       return;
  4909.  
  4910.     case DEMANGLE_COMPONENT_LAMBDA:
  4911.       d_append_string (dpi, "{lambda(");
  4912.       d_print_comp (dpi, options, dc->u.s_unary_num.sub);
  4913.       d_append_string (dpi, ")#");
  4914.       d_append_num (dpi, dc->u.s_unary_num.num + 1);
  4915.       d_append_char (dpi, '}');
  4916.       return;
  4917.  
  4918.     case DEMANGLE_COMPONENT_UNNAMED_TYPE:
  4919.       d_append_string (dpi, "{unnamed type#");
  4920.       d_append_num (dpi, dc->u.s_number.number + 1);
  4921.       d_append_char (dpi, '}');
  4922.       return;
  4923.  
  4924.     case DEMANGLE_COMPONENT_CLONE:
  4925.       d_print_comp (dpi, options, d_left (dc));
  4926.       d_append_string (dpi, " [clone ");
  4927.       d_print_comp (dpi, options, d_right (dc));
  4928.       d_append_char (dpi, ']');
  4929.       return;
  4930.  
  4931.     default:
  4932.       d_print_error (dpi);
  4933.       return;
  4934.     }
  4935. }
  4936.  
  4937. /* Print a Java dentifier.  For Java we try to handle encoded extended
  4938.    Unicode characters.  The C++ ABI doesn't mention Unicode encoding,
  4939.    so we don't it for C++.  Characters are encoded as
  4940.    __U<hex-char>+_.  */
  4941.  
  4942. static void
  4943. d_print_java_identifier (struct d_print_info *dpi, const char *name, int len)
  4944. {
  4945.   const char *p;
  4946.   const char *end;
  4947.  
  4948.   end = name + len;
  4949.   for (p = name; p < end; ++p)
  4950.     {
  4951.       if (end - p > 3
  4952.           && p[0] == '_'
  4953.           && p[1] == '_'
  4954.           && p[2] == 'U')
  4955.         {
  4956.           unsigned long c;
  4957.           const char *q;
  4958.  
  4959.           c = 0;
  4960.           for (q = p + 3; q < end; ++q)
  4961.             {
  4962.               int dig;
  4963.  
  4964.               if (IS_DIGIT (*q))
  4965.                 dig = *q - '0';
  4966.               else if (*q >= 'A' && *q <= 'F')
  4967.                 dig = *q - 'A' + 10;
  4968.               else if (*q >= 'a' && *q <= 'f')
  4969.                 dig = *q - 'a' + 10;
  4970.               else
  4971.                 break;
  4972.  
  4973.               c = c * 16 + dig;
  4974.             }
  4975.           /* If the Unicode character is larger than 256, we don't try
  4976.              to deal with it here.  FIXME.  */
  4977.           if (q < end && *q == '_' && c < 256)
  4978.             {
  4979.               d_append_char (dpi, c);
  4980.               p = q;
  4981.               continue;
  4982.             }
  4983.         }
  4984.  
  4985.       d_append_char (dpi, *p);
  4986.     }
  4987. }
  4988.  
  4989. /* Print a list of modifiers.  SUFFIX is 1 if we are printing
  4990.    qualifiers on this after printing a function.  */
  4991.  
  4992. static void
  4993. d_print_mod_list (struct d_print_info *dpi, int options,
  4994.                   struct d_print_mod *mods, int suffix)
  4995. {
  4996.   struct d_print_template *hold_dpt;
  4997.  
  4998.   if (mods == NULL || d_print_saw_error (dpi))
  4999.     return;
  5000.  
  5001.   if (mods->printed
  5002.       || (! suffix
  5003.           && (mods->mod->type == DEMANGLE_COMPONENT_RESTRICT_THIS
  5004.               || mods->mod->type == DEMANGLE_COMPONENT_VOLATILE_THIS
  5005.               || mods->mod->type == DEMANGLE_COMPONENT_CONST_THIS
  5006.               || mods->mod->type == DEMANGLE_COMPONENT_REFERENCE_THIS
  5007.               || (mods->mod->type
  5008.                   == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS))))
  5009.     {
  5010.       d_print_mod_list (dpi, options, mods->next, suffix);
  5011.       return;
  5012.     }
  5013.  
  5014.   mods->printed = 1;
  5015.  
  5016.   hold_dpt = dpi->templates;
  5017.   dpi->templates = mods->templates;
  5018.  
  5019.   if (mods->mod->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
  5020.     {
  5021.       d_print_function_type (dpi, options, mods->mod, mods->next);
  5022.       dpi->templates = hold_dpt;
  5023.       return;
  5024.     }
  5025.   else if (mods->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE)
  5026.     {
  5027.       d_print_array_type (dpi, options, mods->mod, mods->next);
  5028.       dpi->templates = hold_dpt;
  5029.       return;
  5030.     }
  5031.   else if (mods->mod->type == DEMANGLE_COMPONENT_LOCAL_NAME)
  5032.     {
  5033.       struct d_print_mod *hold_modifiers;
  5034.       struct demangle_component *dc;
  5035.  
  5036.       /* When this is on the modifier stack, we have pulled any
  5037.          qualifiers off the right argument already.  Otherwise, we
  5038.          print it as usual, but don't let the left argument see any
  5039.          modifiers.  */
  5040.  
  5041.       hold_modifiers = dpi->modifiers;
  5042.       dpi->modifiers = NULL;
  5043.       d_print_comp (dpi, options, d_left (mods->mod));
  5044.       dpi->modifiers = hold_modifiers;
  5045.  
  5046.       if ((options & DMGL_JAVA) == 0)
  5047.         d_append_string (dpi, "::");
  5048.       else
  5049.         d_append_char (dpi, '.');
  5050.  
  5051.       dc = d_right (mods->mod);
  5052.  
  5053.       if (dc->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
  5054.         {
  5055.           d_append_string (dpi, "{default arg#");
  5056.           d_append_num (dpi, dc->u.s_unary_num.num + 1);
  5057.           d_append_string (dpi, "}::");
  5058.           dc = dc->u.s_unary_num.sub;
  5059.         }
  5060.  
  5061.       while (dc->type == DEMANGLE_COMPONENT_RESTRICT_THIS
  5062.              || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS
  5063.              || dc->type == DEMANGLE_COMPONENT_CONST_THIS
  5064.              || dc->type == DEMANGLE_COMPONENT_REFERENCE_THIS
  5065.              || dc->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
  5066.         dc = d_left (dc);
  5067.  
  5068.       d_print_comp (dpi, options, dc);
  5069.  
  5070.       dpi->templates = hold_dpt;
  5071.       return;
  5072.     }
  5073.  
  5074.   d_print_mod (dpi, options, mods->mod);
  5075.  
  5076.   dpi->templates = hold_dpt;
  5077.  
  5078.   d_print_mod_list (dpi, options, mods->next, suffix);
  5079. }
  5080.  
  5081. /* Print a modifier.  */
  5082.  
  5083. static void
  5084. d_print_mod (struct d_print_info *dpi, int options,
  5085.              const struct demangle_component *mod)
  5086. {
  5087.   switch (mod->type)
  5088.     {
  5089.     case DEMANGLE_COMPONENT_RESTRICT:
  5090.     case DEMANGLE_COMPONENT_RESTRICT_THIS:
  5091.       d_append_string (dpi, " restrict");
  5092.       return;
  5093.     case DEMANGLE_COMPONENT_VOLATILE:
  5094.     case DEMANGLE_COMPONENT_VOLATILE_THIS:
  5095.       d_append_string (dpi, " volatile");
  5096.       return;
  5097.     case DEMANGLE_COMPONENT_CONST:
  5098.     case DEMANGLE_COMPONENT_CONST_THIS:
  5099.       d_append_string (dpi, " const");
  5100.       return;
  5101.     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  5102.       d_append_char (dpi, ' ');
  5103.       d_print_comp (dpi, options, d_right (mod));
  5104.       return;
  5105.     case DEMANGLE_COMPONENT_POINTER:
  5106.       /* There is no pointer symbol in Java.  */
  5107.       if ((options & DMGL_JAVA) == 0)
  5108.         d_append_char (dpi, '*');
  5109.       return;
  5110.     case DEMANGLE_COMPONENT_REFERENCE_THIS:
  5111.       /* For the ref-qualifier, put a space before the &.  */
  5112.       d_append_char (dpi, ' ');
  5113.     case DEMANGLE_COMPONENT_REFERENCE:
  5114.       d_append_char (dpi, '&');
  5115.       return;
  5116.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  5117.       d_append_char (dpi, ' ');
  5118.     case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
  5119.       d_append_string (dpi, "&&");
  5120.       return;
  5121.     case DEMANGLE_COMPONENT_COMPLEX:
  5122.       d_append_string (dpi, "complex ");
  5123.       return;
  5124.     case DEMANGLE_COMPONENT_IMAGINARY:
  5125.       d_append_string (dpi, "imaginary ");
  5126.       return;
  5127.     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  5128.       if (d_last_char (dpi) != '(')
  5129.         d_append_char (dpi, ' ');
  5130.       d_print_comp (dpi, options, d_left (mod));
  5131.       d_append_string (dpi, "::*");
  5132.       return;
  5133.     case DEMANGLE_COMPONENT_TYPED_NAME:
  5134.       d_print_comp (dpi, options, d_left (mod));
  5135.       return;
  5136.     case DEMANGLE_COMPONENT_VECTOR_TYPE:
  5137.       d_append_string (dpi, " __vector(");
  5138.       d_print_comp (dpi, options, d_left (mod));
  5139.       d_append_char (dpi, ')');
  5140.       return;
  5141.  
  5142.     default:
  5143.       /* Otherwise, we have something that won't go back on the
  5144.          modifier stack, so we can just print it.  */
  5145.       d_print_comp (dpi, options, mod);
  5146.       return;
  5147.     }
  5148. }
  5149.  
  5150. /* Print a function type, except for the return type.  */
  5151.  
  5152. static void
  5153. d_print_function_type (struct d_print_info *dpi, int options,
  5154.                        const struct demangle_component *dc,
  5155.                        struct d_print_mod *mods)
  5156. {
  5157.   int need_paren;
  5158.   int need_space;
  5159.   struct d_print_mod *p;
  5160.   struct d_print_mod *hold_modifiers;
  5161.  
  5162.   need_paren = 0;
  5163.   need_space = 0;
  5164.   for (p = mods; p != NULL; p = p->next)
  5165.     {
  5166.       if (p->printed)
  5167.         break;
  5168.  
  5169.       switch (p->mod->type)
  5170.         {
  5171.         case DEMANGLE_COMPONENT_POINTER:
  5172.         case DEMANGLE_COMPONENT_REFERENCE:
  5173.         case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
  5174.           need_paren = 1;
  5175.           break;
  5176.         case DEMANGLE_COMPONENT_RESTRICT:
  5177.         case DEMANGLE_COMPONENT_VOLATILE:
  5178.         case DEMANGLE_COMPONENT_CONST:
  5179.         case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  5180.         case DEMANGLE_COMPONENT_COMPLEX:
  5181.         case DEMANGLE_COMPONENT_IMAGINARY:
  5182.         case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  5183.           need_space = 1;
  5184.           need_paren = 1;
  5185.           break;
  5186.         case DEMANGLE_COMPONENT_RESTRICT_THIS:
  5187.         case DEMANGLE_COMPONENT_VOLATILE_THIS:
  5188.         case DEMANGLE_COMPONENT_CONST_THIS:
  5189.         case DEMANGLE_COMPONENT_REFERENCE_THIS:
  5190.         case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  5191.           break;
  5192.         default:
  5193.           break;
  5194.         }
  5195.       if (need_paren)
  5196.         break;
  5197.     }
  5198.  
  5199.   if (need_paren)
  5200.     {
  5201.       if (! need_space)
  5202.         {
  5203.           if (d_last_char (dpi) != '('
  5204.               && d_last_char (dpi) != '*')
  5205.             need_space = 1;
  5206.         }
  5207.       if (need_space && d_last_char (dpi) != ' ')
  5208.         d_append_char (dpi, ' ');
  5209.       d_append_char (dpi, '(');
  5210.     }
  5211.  
  5212.   hold_modifiers = dpi->modifiers;
  5213.   dpi->modifiers = NULL;
  5214.  
  5215.   d_print_mod_list (dpi, options, mods, 0);
  5216.  
  5217.   if (need_paren)
  5218.     d_append_char (dpi, ')');
  5219.  
  5220.   d_append_char (dpi, '(');
  5221.  
  5222.   if (d_right (dc) != NULL)
  5223.     d_print_comp (dpi, options, d_right (dc));
  5224.  
  5225.   d_append_char (dpi, ')');
  5226.  
  5227.   d_print_mod_list (dpi, options, mods, 1);
  5228.  
  5229.   dpi->modifiers = hold_modifiers;
  5230. }
  5231.  
  5232. /* Print an array type, except for the element type.  */
  5233.  
  5234. static void
  5235. d_print_array_type (struct d_print_info *dpi, int options,
  5236.                     const struct demangle_component *dc,
  5237.                     struct d_print_mod *mods)
  5238. {
  5239.   int need_space;
  5240.  
  5241.   need_space = 1;
  5242.   if (mods != NULL)
  5243.     {
  5244.       int need_paren;
  5245.       struct d_print_mod *p;
  5246.  
  5247.       need_paren = 0;
  5248.       for (p = mods; p != NULL; p = p->next)
  5249.         {
  5250.           if (! p->printed)
  5251.             {
  5252.               if (p->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE)
  5253.                 {
  5254.                   need_space = 0;
  5255.                   break;
  5256.                 }
  5257.               else
  5258.                 {
  5259.                   need_paren = 1;
  5260.                   need_space = 1;
  5261.                   break;
  5262.                 }
  5263.             }
  5264.         }
  5265.  
  5266.       if (need_paren)
  5267.         d_append_string (dpi, " (");
  5268.  
  5269.       d_print_mod_list (dpi, options, mods, 0);
  5270.  
  5271.       if (need_paren)
  5272.         d_append_char (dpi, ')');
  5273.     }
  5274.  
  5275.   if (need_space)
  5276.     d_append_char (dpi, ' ');
  5277.  
  5278.   d_append_char (dpi, '[');
  5279.  
  5280.   if (d_left (dc) != NULL)
  5281.     d_print_comp (dpi, options, d_left (dc));
  5282.  
  5283.   d_append_char (dpi, ']');
  5284. }
  5285.  
  5286. /* Print an operator in an expression.  */
  5287.  
  5288. static void
  5289. d_print_expr_op (struct d_print_info *dpi, int options,
  5290.                  const struct demangle_component *dc)
  5291. {
  5292.   if (dc->type == DEMANGLE_COMPONENT_OPERATOR)
  5293.     d_append_buffer (dpi, dc->u.s_operator.op->name,
  5294.                      dc->u.s_operator.op->len);
  5295.   else
  5296.     d_print_comp (dpi, options, dc);
  5297. }
  5298.  
  5299. /* Print a cast.  */
  5300.  
  5301. static void
  5302. d_print_cast (struct d_print_info *dpi, int options,
  5303.               const struct demangle_component *dc)
  5304. {
  5305.   if (d_left (dc)->type != DEMANGLE_COMPONENT_TEMPLATE)
  5306.     d_print_comp (dpi, options, d_left (dc));
  5307.   else
  5308.     {
  5309.       struct d_print_mod *hold_dpm;
  5310.       struct d_print_template dpt;
  5311.  
  5312.       /* It appears that for a templated cast operator, we need to put
  5313.          the template parameters in scope for the operator name, but
  5314.          not for the parameters.  The effect is that we need to handle
  5315.          the template printing here.  */
  5316.  
  5317.       hold_dpm = dpi->modifiers;
  5318.       dpi->modifiers = NULL;
  5319.  
  5320.       dpt.next = dpi->templates;
  5321.       dpi->templates = &dpt;
  5322.       dpt.template_decl = d_left (dc);
  5323.  
  5324.       d_print_comp (dpi, options, d_left (d_left (dc)));
  5325.  
  5326.       dpi->templates = dpt.next;
  5327.  
  5328.       if (d_last_char (dpi) == '<')
  5329.         d_append_char (dpi, ' ');
  5330.       d_append_char (dpi, '<');
  5331.       d_print_comp (dpi, options, d_right (d_left (dc)));
  5332.       /* Avoid generating two consecutive '>' characters, to avoid
  5333.          the C++ syntactic ambiguity.  */
  5334.       if (d_last_char (dpi) == '>')
  5335.         d_append_char (dpi, ' ');
  5336.       d_append_char (dpi, '>');
  5337.  
  5338.       dpi->modifiers = hold_dpm;
  5339.     }
  5340. }
  5341.  
  5342. /* Initialize the information structure we use to pass around
  5343.    information.  */
  5344.  
  5345. CP_STATIC_IF_GLIBCPP_V3
  5346. void
  5347. cplus_demangle_init_info (const char *mangled, int options, size_t len,
  5348.                           struct d_info *di)
  5349. {
  5350.   di->s = mangled;
  5351.   di->send = mangled + len;
  5352.   di->options = options;
  5353.  
  5354.   di->n = mangled;
  5355.  
  5356.   /* We can not need more components than twice the number of chars in
  5357.      the mangled string.  Most components correspond directly to
  5358.      chars, but the ARGLIST types are exceptions.  */
  5359.   di->num_comps = 2 * len;
  5360.   di->next_comp = 0;
  5361.  
  5362.   /* Similarly, we can not need more substitutions than there are
  5363.      chars in the mangled string.  */
  5364.   di->num_subs = len;
  5365.   di->next_sub = 0;
  5366.   di->did_subs = 0;
  5367.  
  5368.   di->last_name = NULL;
  5369.  
  5370.   di->expansion = 0;
  5371. }
  5372.  
  5373. /* Internal implementation for the demangler.  If MANGLED is a g++ v3 ABI
  5374.    mangled name, return strings in repeated callback giving the demangled
  5375.    name.  OPTIONS is the usual libiberty demangler options.  On success,
  5376.    this returns 1.  On failure, returns 0.  */
  5377.  
  5378. static int
  5379. d_demangle_callback (const char *mangled, int options,
  5380.                      demangle_callbackref callback, void *opaque)
  5381. {
  5382.   enum
  5383.     {
  5384.       DCT_TYPE,
  5385.       DCT_MANGLED,
  5386.       DCT_GLOBAL_CTORS,
  5387.       DCT_GLOBAL_DTORS
  5388.     }
  5389.   type;
  5390.   struct d_info di;
  5391.   struct demangle_component *dc;
  5392.   int status;
  5393.  
  5394.   if (mangled[0] == '_' && mangled[1] == 'Z')
  5395.     type = DCT_MANGLED;
  5396.   else if (strncmp (mangled, "_GLOBAL_", 8) == 0
  5397.            && (mangled[8] == '.' || mangled[8] == '_' || mangled[8] == '$')
  5398.            && (mangled[9] == 'D' || mangled[9] == 'I')
  5399.            && mangled[10] == '_')
  5400.     type = mangled[9] == 'I' ? DCT_GLOBAL_CTORS : DCT_GLOBAL_DTORS;
  5401.   else
  5402.     {
  5403.       if ((options & DMGL_TYPES) == 0)
  5404.         return 0;
  5405.       type = DCT_TYPE;
  5406.     }
  5407.  
  5408.   cplus_demangle_init_info (mangled, options, strlen (mangled), &di);
  5409.  
  5410.   {
  5411. #ifdef CP_DYNAMIC_ARRAYS
  5412.     __extension__ struct demangle_component comps[di.num_comps];
  5413.     __extension__ struct demangle_component *subs[di.num_subs];
  5414.  
  5415.     di.comps = comps;
  5416.     di.subs = subs;
  5417. #else
  5418.     di.comps = alloca (di.num_comps * sizeof (*di.comps));
  5419.     di.subs = alloca (di.num_subs * sizeof (*di.subs));
  5420. #endif
  5421.  
  5422.     switch (type)
  5423.       {
  5424.       case DCT_TYPE:
  5425.         dc = cplus_demangle_type (&di);
  5426.         break;
  5427.       case DCT_MANGLED:
  5428.         dc = cplus_demangle_mangled_name (&di, 1);
  5429.         break;
  5430.       case DCT_GLOBAL_CTORS:
  5431.       case DCT_GLOBAL_DTORS:
  5432.         d_advance (&di, 11);
  5433.         dc = d_make_comp (&di,
  5434.                           (type == DCT_GLOBAL_CTORS
  5435.                            ? DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS
  5436.                            : DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS),
  5437.                           d_make_demangle_mangled_name (&di, d_str (&di)),
  5438.                           NULL);
  5439.         d_advance (&di, strlen (d_str (&di)));
  5440.         break;
  5441.       }
  5442.  
  5443.     /* If DMGL_PARAMS is set, then if we didn't consume the entire
  5444.        mangled string, then we didn't successfully demangle it.  If
  5445.        DMGL_PARAMS is not set, we didn't look at the trailing
  5446.        parameters.  */
  5447.     if (((options & DMGL_PARAMS) != 0) && d_peek_char (&di) != '\0')
  5448.       dc = NULL;
  5449.  
  5450. #ifdef CP_DEMANGLE_DEBUG
  5451.     d_dump (dc, 0);
  5452. #endif
  5453.  
  5454.     status = (dc != NULL)
  5455.              ? cplus_demangle_print_callback (options, dc, callback, opaque)
  5456.              : 0;
  5457.   }
  5458.  
  5459.   return status;
  5460. }
  5461.  
  5462. /* Entry point for the demangler.  If MANGLED is a g++ v3 ABI mangled
  5463.    name, return a buffer allocated with malloc holding the demangled
  5464.    name.  OPTIONS is the usual libiberty demangler options.  On
  5465.    success, this sets *PALC to the allocated size of the returned
  5466.    buffer.  On failure, this sets *PALC to 0 for a bad name, or 1 for
  5467.    a memory allocation failure, and returns NULL.  */
  5468.  
  5469. static char *
  5470. d_demangle (const char *mangled, int options, size_t *palc)
  5471. {
  5472.   struct d_growable_string dgs;
  5473.   int status;
  5474.  
  5475.   d_growable_string_init (&dgs, 0);
  5476.  
  5477.   status = d_demangle_callback (mangled, options,
  5478.                                 d_growable_string_callback_adapter, &dgs);
  5479.   if (status == 0)
  5480.     {
  5481.       free (dgs.buf);
  5482.       *palc = 0;
  5483.       return NULL;
  5484.     }
  5485.  
  5486.   *palc = dgs.allocation_failure ? 1 : dgs.alc;
  5487.   return dgs.buf;
  5488. }
  5489.  
  5490. #if defined(IN_LIBGCC2) || defined(IN_GLIBCPP_V3)
  5491.  
  5492. extern char *__cxa_demangle (const char *, char *, size_t *, int *);
  5493.  
  5494. /* ia64 ABI-mandated entry point in the C++ runtime library for
  5495.    performing demangling.  MANGLED_NAME is a NUL-terminated character
  5496.    string containing the name to be demangled.
  5497.  
  5498.    OUTPUT_BUFFER is a region of memory, allocated with malloc, of
  5499.    *LENGTH bytes, into which the demangled name is stored.  If
  5500.    OUTPUT_BUFFER is not long enough, it is expanded using realloc.
  5501.    OUTPUT_BUFFER may instead be NULL; in that case, the demangled name
  5502.    is placed in a region of memory allocated with malloc.
  5503.  
  5504.    If LENGTH is non-NULL, the length of the buffer containing the
  5505.    demangled name, is placed in *LENGTH.
  5506.  
  5507.    The return value is a pointer to the start of the NUL-terminated
  5508.    demangled name, or NULL if the demangling fails.  The caller is
  5509.    responsible for deallocating this memory using free.
  5510.  
  5511.    *STATUS is set to one of the following values:
  5512.       0: The demangling operation succeeded.
  5513.      -1: A memory allocation failure occurred.
  5514.      -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules.
  5515.      -3: One of the arguments is invalid.
  5516.  
  5517.    The demangling is performed using the C++ ABI mangling rules, with
  5518.    GNU extensions.  */
  5519.  
  5520. char *
  5521. __cxa_demangle (const char *mangled_name, char *output_buffer,
  5522.                 size_t *length, int *status)
  5523. {
  5524.   char *demangled;
  5525.   size_t alc;
  5526.  
  5527.   if (mangled_name == NULL)
  5528.     {
  5529.       if (status != NULL)
  5530.         *status = -3;
  5531.       return NULL;
  5532.     }
  5533.  
  5534.   if (output_buffer != NULL && length == NULL)
  5535.     {
  5536.       if (status != NULL)
  5537.         *status = -3;
  5538.       return NULL;
  5539.     }
  5540.  
  5541.   demangled = d_demangle (mangled_name, DMGL_PARAMS | DMGL_TYPES, &alc);
  5542.  
  5543.   if (demangled == NULL)
  5544.     {
  5545.       if (status != NULL)
  5546.         {
  5547.           if (alc == 1)
  5548.             *status = -1;
  5549.           else
  5550.             *status = -2;
  5551.         }
  5552.       return NULL;
  5553.     }
  5554.  
  5555.   if (output_buffer == NULL)
  5556.     {
  5557.       if (length != NULL)
  5558.         *length = alc;
  5559.     }
  5560.   else
  5561.     {
  5562.       if (strlen (demangled) < *length)
  5563.         {
  5564.           strcpy (output_buffer, demangled);
  5565.           free (demangled);
  5566.           demangled = output_buffer;
  5567.         }
  5568.       else
  5569.         {
  5570.           free (output_buffer);
  5571.           *length = alc;
  5572.         }
  5573.     }
  5574.  
  5575.   if (status != NULL)
  5576.     *status = 0;
  5577.  
  5578.   return demangled;
  5579. }
  5580.  
  5581. extern int __gcclibcxx_demangle_callback (const char *,
  5582.                                           void (*)
  5583.                                             (const char *, size_t, void *),
  5584.                                           void *);
  5585.  
  5586. /* Alternative, allocationless entry point in the C++ runtime library
  5587.    for performing demangling.  MANGLED_NAME is a NUL-terminated character
  5588.    string containing the name to be demangled.
  5589.  
  5590.    CALLBACK is a callback function, called with demangled string
  5591.    segments as demangling progresses; it is called at least once,
  5592.    but may be called more than once.  OPAQUE is a generalized pointer
  5593.    used as a callback argument.
  5594.  
  5595.    The return code is one of the following values, equivalent to
  5596.    the STATUS values of __cxa_demangle() (excluding -1, since this
  5597.    function performs no memory allocations):
  5598.       0: The demangling operation succeeded.
  5599.      -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules.
  5600.      -3: One of the arguments is invalid.
  5601.  
  5602.    The demangling is performed using the C++ ABI mangling rules, with
  5603.    GNU extensions.  */
  5604.  
  5605. int
  5606. __gcclibcxx_demangle_callback (const char *mangled_name,
  5607.                                void (*callback) (const char *, size_t, void *),
  5608.                                void *opaque)
  5609. {
  5610.   int status;
  5611.  
  5612.   if (mangled_name == NULL || callback == NULL)
  5613.     return -3;
  5614.  
  5615.   status = d_demangle_callback (mangled_name, DMGL_PARAMS | DMGL_TYPES,
  5616.                                 callback, opaque);
  5617.   if (status == 0)
  5618.     return -2;
  5619.  
  5620.   return 0;
  5621. }
  5622.  
  5623. #else /* ! (IN_LIBGCC2 || IN_GLIBCPP_V3) */
  5624.  
  5625. /* Entry point for libiberty demangler.  If MANGLED is a g++ v3 ABI
  5626.    mangled name, return a buffer allocated with malloc holding the
  5627.    demangled name.  Otherwise, return NULL.  */
  5628.  
  5629. char *
  5630. cplus_demangle_v3 (const char *mangled, int options)
  5631. {
  5632.   size_t alc;
  5633.  
  5634.   return d_demangle (mangled, options, &alc);
  5635. }
  5636.  
  5637. int
  5638. cplus_demangle_v3_callback (const char *mangled, int options,
  5639.                             demangle_callbackref callback, void *opaque)
  5640. {
  5641.   return d_demangle_callback (mangled, options, callback, opaque);
  5642. }
  5643.  
  5644. /* Demangle a Java symbol.  Java uses a subset of the V3 ABI C++ mangling
  5645.    conventions, but the output formatting is a little different.
  5646.    This instructs the C++ demangler not to emit pointer characters ("*"), to
  5647.    use Java's namespace separator symbol ("." instead of "::"), and to output
  5648.    JArray<TYPE> as TYPE[].  */
  5649.  
  5650. char *
  5651. java_demangle_v3 (const char *mangled)
  5652. {
  5653.   size_t alc;
  5654.  
  5655.   return d_demangle (mangled, DMGL_JAVA | DMGL_PARAMS | DMGL_RET_POSTFIX, &alc);
  5656. }
  5657.  
  5658. int
  5659. java_demangle_v3_callback (const char *mangled,
  5660.                            demangle_callbackref callback, void *opaque)
  5661. {
  5662.   return d_demangle_callback (mangled,
  5663.                               DMGL_JAVA | DMGL_PARAMS | DMGL_RET_POSTFIX,
  5664.                               callback, opaque);
  5665. }
  5666.  
  5667. #endif /* IN_LIBGCC2 || IN_GLIBCPP_V3 */
  5668.  
  5669. #ifndef IN_GLIBCPP_V3
  5670.  
  5671. /* Demangle a string in order to find out whether it is a constructor
  5672.    or destructor.  Return non-zero on success.  Set *CTOR_KIND and
  5673.    *DTOR_KIND appropriately.  */
  5674.  
  5675. static int
  5676. is_ctor_or_dtor (const char *mangled,
  5677.                  enum gnu_v3_ctor_kinds *ctor_kind,
  5678.                  enum gnu_v3_dtor_kinds *dtor_kind)
  5679. {
  5680.   struct d_info di;
  5681.   struct demangle_component *dc;
  5682.   int ret;
  5683.  
  5684.   *ctor_kind = (enum gnu_v3_ctor_kinds) 0;
  5685.   *dtor_kind = (enum gnu_v3_dtor_kinds) 0;
  5686.  
  5687.   cplus_demangle_init_info (mangled, DMGL_GNU_V3, strlen (mangled), &di);
  5688.  
  5689.   {
  5690. #ifdef CP_DYNAMIC_ARRAYS
  5691.     __extension__ struct demangle_component comps[di.num_comps];
  5692.     __extension__ struct demangle_component *subs[di.num_subs];
  5693.  
  5694.     di.comps = comps;
  5695.     di.subs = subs;
  5696. #else
  5697.     di.comps = alloca (di.num_comps * sizeof (*di.comps));
  5698.     di.subs = alloca (di.num_subs * sizeof (*di.subs));
  5699. #endif
  5700.  
  5701.     dc = cplus_demangle_mangled_name (&di, 1);
  5702.  
  5703.     /* Note that because we did not pass DMGL_PARAMS, we don't expect
  5704.        to demangle the entire string.  */
  5705.  
  5706.     ret = 0;
  5707.     while (dc != NULL)
  5708.       {
  5709.         switch (dc->type)
  5710.           {
  5711.             /* These cannot appear on a constructor or destructor.  */
  5712.           case DEMANGLE_COMPONENT_RESTRICT_THIS:
  5713.           case DEMANGLE_COMPONENT_VOLATILE_THIS:
  5714.           case DEMANGLE_COMPONENT_CONST_THIS:
  5715.           case DEMANGLE_COMPONENT_REFERENCE_THIS:
  5716.           case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
  5717.           default:
  5718.             dc = NULL;
  5719.             break;
  5720.           case DEMANGLE_COMPONENT_TYPED_NAME:
  5721.           case DEMANGLE_COMPONENT_TEMPLATE:
  5722.             dc = d_left (dc);
  5723.             break;
  5724.           case DEMANGLE_COMPONENT_QUAL_NAME:
  5725.           case DEMANGLE_COMPONENT_LOCAL_NAME:
  5726.             dc = d_right (dc);
  5727.             break;
  5728.           case DEMANGLE_COMPONENT_CTOR:
  5729.             *ctor_kind = dc->u.s_ctor.kind;
  5730.             ret = 1;
  5731.             dc = NULL;
  5732.             break;
  5733.           case DEMANGLE_COMPONENT_DTOR:
  5734.             *dtor_kind = dc->u.s_dtor.kind;
  5735.             ret = 1;
  5736.             dc = NULL;
  5737.             break;
  5738.           }
  5739.       }
  5740.   }
  5741.  
  5742.   return ret;
  5743. }
  5744.  
  5745. /* Return whether NAME is the mangled form of a g++ V3 ABI constructor
  5746.    name.  A non-zero return indicates the type of constructor.  */
  5747.  
  5748. enum gnu_v3_ctor_kinds
  5749. is_gnu_v3_mangled_ctor (const char *name)
  5750. {
  5751.   enum gnu_v3_ctor_kinds ctor_kind;
  5752.   enum gnu_v3_dtor_kinds dtor_kind;
  5753.  
  5754.   if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind))
  5755.     return (enum gnu_v3_ctor_kinds) 0;
  5756.   return ctor_kind;
  5757. }
  5758.  
  5759.  
  5760. /* Return whether NAME is the mangled form of a g++ V3 ABI destructor
  5761.    name.  A non-zero return indicates the type of destructor.  */
  5762.  
  5763. enum gnu_v3_dtor_kinds
  5764. is_gnu_v3_mangled_dtor (const char *name)
  5765. {
  5766.   enum gnu_v3_ctor_kinds ctor_kind;
  5767.   enum gnu_v3_dtor_kinds dtor_kind;
  5768.  
  5769.   if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind))
  5770.     return (enum gnu_v3_dtor_kinds) 0;
  5771.   return dtor_kind;
  5772. }
  5773.  
  5774. #endif /* IN_GLIBCPP_V3 */
  5775.  
  5776. #ifdef STANDALONE_DEMANGLER
  5777.  
  5778. #include "getopt.h"
  5779. #include "dyn-string.h"
  5780.  
  5781. static void print_usage (FILE* fp, int exit_value);
  5782.  
  5783. #define IS_ALPHA(CHAR)                                                  \
  5784.   (((CHAR) >= 'a' && (CHAR) <= 'z')                                     \
  5785.    || ((CHAR) >= 'A' && (CHAR) <= 'Z'))
  5786.  
  5787. /* Non-zero if CHAR is a character than can occur in a mangled name.  */
  5788. #define is_mangled_char(CHAR)                                           \
  5789.   (IS_ALPHA (CHAR) || IS_DIGIT (CHAR)                                   \
  5790.    || (CHAR) == '_' || (CHAR) == '.' || (CHAR) == '$')
  5791.  
  5792. /* The name of this program, as invoked.  */
  5793. const char* program_name;
  5794.  
  5795. /* Prints usage summary to FP and then exits with EXIT_VALUE.  */
  5796.  
  5797. static void
  5798. print_usage (FILE* fp, int exit_value)
  5799. {
  5800.   fprintf (fp, "Usage: %s [options] [names ...]\n", program_name);
  5801.   fprintf (fp, "Options:\n");
  5802.   fprintf (fp, "  -h,--help       Display this message.\n");
  5803.   fprintf (fp, "  -p,--no-params  Don't display function parameters\n");
  5804.   fprintf (fp, "  -v,--verbose    Produce verbose demanglings.\n");
  5805.   fprintf (fp, "If names are provided, they are demangled.  Otherwise filters standard input.\n");
  5806.  
  5807.   exit (exit_value);
  5808. }
  5809.  
  5810. /* Option specification for getopt_long.  */
  5811. static const struct option long_options[] =
  5812. {
  5813.   { "help",      no_argument, NULL, 'h' },
  5814.   { "no-params", no_argument, NULL, 'p' },
  5815.   { "verbose",   no_argument, NULL, 'v' },
  5816.   { NULL,        no_argument, NULL, 0   },
  5817. };
  5818.  
  5819. /* Main entry for a demangling filter executable.  It will demangle
  5820.    its command line arguments, if any.  If none are provided, it will
  5821.    filter stdin to stdout, replacing any recognized mangled C++ names
  5822.    with their demangled equivalents.  */
  5823.  
  5824. int
  5825. main (int argc, char *argv[])
  5826. {
  5827.   int i;
  5828.   int opt_char;
  5829.   int options = DMGL_PARAMS | DMGL_ANSI | DMGL_TYPES;
  5830.  
  5831.   /* Use the program name of this program, as invoked.  */
  5832.   program_name = argv[0];
  5833.  
  5834.   /* Parse options.  */
  5835.   do
  5836.     {
  5837.       opt_char = getopt_long (argc, argv, "hpv", long_options, NULL);
  5838.       switch (opt_char)
  5839.         {
  5840.         case '?':  /* Unrecognized option.  */
  5841.           print_usage (stderr, 1);
  5842.           break;
  5843.  
  5844.         case 'h':
  5845.           print_usage (stdout, 0);
  5846.           break;
  5847.  
  5848.         case 'p':
  5849.           options &= ~ DMGL_PARAMS;
  5850.           break;
  5851.  
  5852.         case 'v':
  5853.           options |= DMGL_VERBOSE;
  5854.           break;
  5855.         }
  5856.     }
  5857.   while (opt_char != -1);
  5858.  
  5859.   if (optind == argc)
  5860.     /* No command line arguments were provided.  Filter stdin.  */
  5861.     {
  5862.       dyn_string_t mangled = dyn_string_new (3);
  5863.       char *s;
  5864.  
  5865.       /* Read all of input.  */
  5866.       while (!feof (stdin))
  5867.         {
  5868.           char c;
  5869.  
  5870.           /* Pile characters into mangled until we hit one that can't
  5871.              occur in a mangled name.  */
  5872.           c = getchar ();
  5873.           while (!feof (stdin) && is_mangled_char (c))
  5874.             {
  5875.               dyn_string_append_char (mangled, c);
  5876.               if (feof (stdin))
  5877.                 break;
  5878.               c = getchar ();
  5879.             }
  5880.  
  5881.           if (dyn_string_length (mangled) > 0)
  5882.             {
  5883. #ifdef IN_GLIBCPP_V3
  5884.               s = __cxa_demangle (dyn_string_buf (mangled), NULL, NULL, NULL);
  5885. #else
  5886.               s = cplus_demangle_v3 (dyn_string_buf (mangled), options);
  5887. #endif
  5888.  
  5889.               if (s != NULL)
  5890.                 {
  5891.                   fputs (s, stdout);
  5892.                   free (s);
  5893.                 }
  5894.               else
  5895.                 {
  5896.                   /* It might not have been a mangled name.  Print the
  5897.                      original text.  */
  5898.                   fputs (dyn_string_buf (mangled), stdout);
  5899.                 }
  5900.  
  5901.               dyn_string_clear (mangled);
  5902.             }
  5903.  
  5904.           /* If we haven't hit EOF yet, we've read one character that
  5905.              can't occur in a mangled name, so print it out.  */
  5906.           if (!feof (stdin))
  5907.             putchar (c);
  5908.         }
  5909.  
  5910.       dyn_string_delete (mangled);
  5911.     }
  5912.   else
  5913.     /* Demangle command line arguments.  */
  5914.     {
  5915.       /* Loop over command line arguments.  */
  5916.       for (i = optind; i < argc; ++i)
  5917.         {
  5918.           char *s;
  5919. #ifdef IN_GLIBCPP_V3
  5920.           int status;
  5921. #endif
  5922.  
  5923.           /* Attempt to demangle.  */
  5924. #ifdef IN_GLIBCPP_V3
  5925.           s = __cxa_demangle (argv[i], NULL, NULL, &status);
  5926. #else
  5927.           s = cplus_demangle_v3 (argv[i], options);
  5928. #endif
  5929.  
  5930.           /* If it worked, print the demangled name.  */
  5931.           if (s != NULL)
  5932.             {
  5933.               printf ("%s\n", s);
  5934.               free (s);
  5935.             }
  5936.           else
  5937.             {
  5938. #ifdef IN_GLIBCPP_V3
  5939.               fprintf (stderr, "Failed: %s (status %d)\n", argv[i], status);
  5940. #else
  5941.               fprintf (stderr, "Failed: %s\n", argv[i]);
  5942. #endif
  5943.             }
  5944.         }
  5945.     }
  5946.  
  5947.   return 0;
  5948. }
  5949.  
  5950. #endif /* STANDALONE_DEMANGLER */
  5951.