/* xmemdup.c -- Duplicate a memory buffer, using xcalloc.
This trivial function is in the public domain.
Jeff Garzik, September 1999. */
/*
@deftypefn Replacement void* xmemdup (void *@var{input}, @
size_t @var{copy_size}, size_t @var{alloc_size})
Duplicates a region of memory without fail. First, @var{alloc_size} bytes
are allocated, then @var{copy_size} bytes from @var{input} are copied into
it, and the new memory is returned. If fewer bytes are copied than were
allocated, the remaining memory is zeroed.
@end deftypefn
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ansidecl.h"
#include "libiberty.h"
#include <sys/types.h> /* For size_t. */
#ifdef HAVE_STRING_H
#include <string.h>
#else
# ifdef HAVE_STRINGS_H
# include <strings.h>
# endif
#endif
PTR
xmemdup (const PTR input, size_t copy_size, size_t alloc_size)
{
PTR output = xcalloc (1, alloc_size);
return (PTR
) memcpy (output
, input
, copy_size
); }