diff options
Diffstat (limited to 'lib/xalloc-oversized.h')
| -rw-r--r-- | lib/xalloc-oversized.h | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/lib/xalloc-oversized.h b/lib/xalloc-oversized.h index 6b4e68b7c0e..ff0efc6ba40 100644 --- a/lib/xalloc-oversized.h +++ b/lib/xalloc-oversized.h @@ -21,11 +21,6 @@ #include <stddef.h> #include <stdint.h> -/* Default for (non-Clang) compilers that lack __has_builtin. */ -#ifndef __has_builtin -# define __has_builtin(x) 0 -#endif - /* True if N * S would overflow in a size_t calculation, or would generate a value larger than PTRDIFF_MAX. This expands to a constant expression if N and S are both constants. @@ -46,13 +41,10 @@ typedef size_t __xalloc_count_type; positive and N must be nonnegative. This is a macro, not a function, so that it works correctly even when SIZE_MAX < N. */ -#if 7 <= __GNUC__ || __has_builtin (__builtin_add_overflow_p) +#if 7 <= __GNUC__ # define xalloc_oversized(n, s) \ __builtin_mul_overflow_p (n, s, (__xalloc_count_type) 1) -#elif ((5 <= __GNUC__ \ - || (__has_builtin (__builtin_mul_overflow) \ - && __has_builtin (__builtin_constant_p))) \ - && !__STRICT_ANSI__) +#elif 5 <= __GNUC__ && !__STRICT_ANSI__ # define xalloc_oversized(n, s) \ (__builtin_constant_p (n) && __builtin_constant_p (s) \ ? __xalloc_oversized (n, s) \ |