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fix valgrind mem for large alignment

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This commit is contained in:
Daan Leijen 2023-03-05 18:03:04 -08:00
parent 056c2ce45b
commit 82c85d1a13
2 changed files with 30 additions and 11 deletions
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17
src/alloc-aligned.c
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@ -74,20 +74,17 @@ static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t*
mi_assert_internal(mi_usable_size(p) == mi_usable_size(aligned_p)+adjust);
// now zero the block if needed
if (zero && alignment > MI_ALIGNMENT_MAX) {
const ptrdiff_t diff = (uint8_t*)aligned_p - (uint8_t*)p;
ptrdiff_t zsize = mi_page_usable_block_size(_mi_ptr_page(p)) - diff - MI_PADDING_SIZE;
#if MI_PADDING
zsize -= MI_MAX_ALIGN_SIZE;
#endif
if (zsize > 0) { _mi_memzero(aligned_p, zsize); }
if (alignment > MI_ALIGNMENT_MAX) {
// for the tracker, on huge aligned allocations only from the start of the large block is defined
mi_track_mem_undefined(aligned_p, size);
if (zero) {
_mi_memzero(aligned_p, mi_usable_size(aligned_p));
}
}
#if MI_TRACK_ENABLED
if (p != aligned_p) {
mi_track_align(p,aligned_p,adjust,mi_usable_size(aligned_p));
}
#endif
}
return aligned_p;
}