| 170,6 → 170,11 |
|---|
| (typeof(ptr)) (__ptr + (off)); }) |
| #endif |
| |
| /* Not-quite-unique ID. */ |
| #ifndef __UNIQUE_ID |
| # define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __LINE__) |
| #endif |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* __ASSEMBLY__ */ |
| 302,10 → 307,36 |
|---|
| #endif |
| #ifndef __compiletime_error |
| # define __compiletime_error(message) |
| # define __compiletime_error_fallback(condition) \ |
| do { ((void)sizeof(char[1 - 2 * condition])); } while (0) |
| #else |
| # define __compiletime_error_fallback(condition) do { } while (0) |
| #endif |
| #ifndef __linktime_error |
| # define __linktime_error(message) |
| #endif |
| |
| #define __compiletime_assert(condition, msg, prefix, suffix) \ |
| do { \ |
| bool __cond = !(condition); \ |
| extern void prefix ## suffix(void) __compiletime_error(msg); \ |
| if (__cond) \ |
| prefix ## suffix(); \ |
| __compiletime_error_fallback(__cond); \ |
| } while (0) |
| |
| #define _compiletime_assert(condition, msg, prefix, suffix) \ |
| __compiletime_assert(condition, msg, prefix, suffix) |
| |
| /** |
| * compiletime_assert - break build and emit msg if condition is false |
| * @condition: a compile-time constant condition to check |
| * @msg: a message to emit if condition is false |
| * |
| * In tradition of POSIX assert, this macro will break the build if the |
| * supplied condition is *false*, emitting the supplied error message if the |
| * compiler has support to do so. |
| */ |
| #define compiletime_assert(condition, msg) \ |
| _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) |
| |
| /* |
| * Prevent the compiler from merging or refetching accesses. The compiler |
| * is also forbidden from reordering successive instances of ACCESS_ONCE(), |