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malloc: Use INT_ADD_OVERFLOW instead of __builtin_add_overflow_p

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clang does not support the __builtin_*_overflow_p builtins, on gcc
the macros will call __builtin_*_overflow_p.

Reviewed-by: Collin Funk <collin.funk1@gmail.com>
This commit is contained in:
Adhemerval Zanella
2025-10-17 16:13:25 -03:00
parent 047b0e08ac
commit 41e27c400d
1 changed files with 3 additions and 2 deletions
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5
malloc/malloc.c
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@@ -224,6 +224,7 @@
#include <stdio.h> /* needed for malloc_stats */ #include <stdio.h> /* needed for malloc_stats */
#include <errno.h> #include <errno.h>
#include <assert.h> #include <assert.h>
#include <intprops.h>
#include <shlib-compat.h> #include <shlib-compat.h>
@@ -3526,8 +3527,8 @@ __libc_free (void *mem)
#endif #endif
/* Check size >= MINSIZE and p + size does not overflow. */ /* Check size >= MINSIZE and p + size does not overflow. */
if (__glibc_unlikely (__builtin_add_overflow_p ((uintptr_t) p, size - MINSIZE, if (__glibc_unlikely (INT_ADD_OVERFLOW ((uintptr_t) p,
(uintptr_t) 0))) size - MINSIZE)))
return malloc_printerr_tail ("free(): invalid size"); return malloc_printerr_tail ("free(): invalid size");
_int_free_chunk (arena_for_chunk (p), p, size, 0); _int_free_chunk (arena_for_chunk (p), p, size, 0);