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[libc] Only use __has_builtin on clang

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The preprocessor reads the whole line even if the first condition of an and is false so this broke when compiling on older gcc versions which don't recognize `__has_builtin`
This commit is contained in:
Alex Brachet 2020-03-28 12:28:43 -04:00
parent 81f173ed0e
commit 6a4f8423ae
1 changed files with 3 additions and 1 deletions
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4
libc/src/string/memory_utils/memcpy_utils.h
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@ -14,8 +14,10 @@
// __builtin_memcpy_inline guarantees to never call external functions.
// Unfortunately it is not widely available.
#if defined(__clang__) && __has_builtin(__builtin_memcpy_inline)
#ifdef __clang__
#if __has_builtin(__builtin_memcpy_inline)
#define USE_BUILTIN_MEMCPY_INLINE
#endif
#elif defined(__GNUC__)
#define USE_BUILTIN_MEMCPY
#endif