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use EFAULT for buffer overflow and call abort in debug mode (as well as secure mode)

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This commit is contained in:
daan 2020-01-29 17:25:40 -08:00
parent 5d212d688f
commit 7ff3ec2bf7
2 changed files with 9 additions and 1 deletions
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2
src/alloc.c
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@ -187,7 +187,7 @@ static void mi_check_padding(const mi_page_t* page, const mi_block_t* block) {
mi_block_t* const padding = (mi_block_t*)((uint8_t*)block + page->xblock_size - MI_PADDING);
mi_block_t* const decoded = mi_block_nextx(page, padding, page->key[0], page->key[1]);
if (decoded != block) {
_mi_error_message(EINVAL, "buffer overflow in heap block %p: write after %zu bytes\n", block, page->xblock_size);
_mi_error_message(EFAULT, "buffer overflow in heap block %p: write after %zu bytes\n", block, page->xblock_size);
}
}
#else

8
src/options.c
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@ -319,6 +319,14 @@ static volatile _Atomic(void*) mi_error_arg; // = NULL
static void mi_error_default(int err) {
UNUSED(err);
#if (MI_DEBUG>0)
if (err==EFAULT) {
#ifdef _MSC_VER
__debugbreak();
#endif
abort();
}
#endif
#if (MI_SECURE>0)
if (err==EFAULT) { // abort on serious errors in secure mode (corrupted meta-data)
abort();