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Merge pull request #5 from microsoft/dev

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add MI_PADDING flag to cmake to supress use of padding in debug mode
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synacker 2020-04-08 09:08:42 -07:00 • committed by GitHub
commit 39f9fb1fbd
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6 changed files with 13 additions and 9 deletions
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4
include/mimalloc-types.h
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@ -61,7 +61,7 @@ terms of the MIT license. A copy of the license can be found in the file
// Encoded free lists allow detection of corrupted free lists
// and can detect buffer overflows, modify after free, and double `free`s.
#if (MI_SECURE>=3 || MI_DEBUG>=1 || defined(MI_PADDING))
#if (MI_SECURE>=3 || MI_DEBUG>=1 || MI_PADDING > 0)
#define MI_ENCODE_FREELIST 1
#endif
@ -307,7 +307,7 @@ typedef struct mi_random_cxt_s {
// In debug mode there is a padding stucture at the end of the blocks to check for buffer overflows
#if defined(MI_PADDING)
#if (MI_PADDING)
typedef struct mi_padding_s {
uint32_t canary; // encoded block value to check validity of the padding (in case of overflow)
uint32_t delta; // padding bytes before the block. (mi_usable_size(p) - delta == exact allocated bytes)