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fix write to empty heap in mi_guarded build

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daanx 2024-12-08 17:23:09 -08:00
parent 68bd8744b7
commit d9a2f76ff7
3 changed files with 56 additions and 23 deletions
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5
src/alloc-aligned.c
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@ -39,9 +39,10 @@ static mi_decl_restrict void* mi_heap_malloc_guarded_aligned(mi_heap_t* heap, si
static void* mi_heap_malloc_zero_no_guarded(mi_heap_t* heap, size_t size, bool zero) {
const size_t rate = heap->guarded_sample_rate;
heap->guarded_sample_rate = 0;
// only write if `rate!=0` so we don't write to the constant `_mi_heap_empty`
if (rate != 0) { heap->guarded_sample_rate = 0; }
void* p = _mi_heap_malloc_zero(heap, size, zero);
heap->guarded_sample_rate = rate;
if (rate != 0) { heap->guarded_sample_rate = rate; }
return p;
}
#else