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faster backtrace; show predecessor blocks on block overflow

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Daan 2021-12-10 17:16:37 -08:00
parent b6e2b6e975
commit 5739714b8d
4 changed files with 20 additions and 16 deletions
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4
include/mimalloc-internal.h
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@ -144,7 +144,7 @@ void* _mi_heap_realloc_zero(mi_heap_t* heap, void* p, size_t newsize, bool
mi_block_t* _mi_page_ptr_unalign(const mi_segment_t* segment, const mi_page_t* page, const void* p);
bool _mi_free_delayed_block(mi_block_t* block);
void _mi_block_zero_init(const mi_page_t* page, void* p, size_t size);
void _mi_error_trace_with_predecessor(const mi_page_t* page, const mi_block_t* block, const char* msg);
void _mi_show_block_trace_with_predecessor(const mi_page_t* page, const mi_block_t* block, const char* msg);
#if MI_DEBUG>1
bool _mi_page_is_valid(mi_page_t* page);
@ -639,7 +639,7 @@ static inline mi_block_t* mi_block_next(const mi_page_t* page, const mi_block_t*
// check for free list corruption: is `next` at least in the same page?
// TODO: check if `next` is `page->block_size` aligned?
if (mi_unlikely(next!=NULL && !mi_is_in_same_page(block, next))) {
_mi_error_trace_with_predecessor(page, block, "free block");
_mi_show_block_trace_with_predecessor(page, block, "free block");
_mi_error_message(EFAULT, "corrupted free list entry of size %zu at %p: value 0x%zx\n", mi_page_block_size(page), block, (uintptr_t)next);
next = NULL;
}