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fix posix_memalign according to issue #27

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This commit is contained in:
Daan Leijen 2019-06-23 10:59:47 -07:00
parent fab7329c7a
commit ef02104fd3
1 changed files with 8 additions and 3 deletions
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11
src/alloc-override.c
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@ -128,9 +128,14 @@ size_t malloc_usable_size(void *p) MI_FORWARD1(mi_usable_size,p)
void cfree(void* p) MI_FORWARD0(mi_free, p)
int posix_memalign(void** p, size_t alignment, size_t size) {
if (alignment % sizeof(void*) != 0) { *p = NULL; return EINVAL; };
*p = mi_malloc_aligned(size, alignment);
return (*p == NULL ? ENOMEM : 0);
// TODO: the spec says we should return EINVAL also if alignment is not a power of 2.
// The spec also dictates we should not modify `*p` on an error. (issue#27)
// <http://man7.org/linux/man-pages/man3/posix_memalign.3.html>
if (alignment % sizeof(void*) != 0 || p==NULL) return EINVAL;
void* q = mi_malloc_aligned(size, alignment);
if (q==NULL && size != 0) return ENOMEM;
*p = q;
return 0;
}
void* memalign(size_t alignment, size_t size) {