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author | Alex Shlyapnikov <alekseys@google.com> | 2017-10-25 17:21:37 +0000 |
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committer | Alex Shlyapnikov <alekseys@google.com> | 2017-10-25 17:21:37 +0000 |
commit | 00b60424097c569e185a667969d054db7004cd0c (patch) | |
tree | e94a6e5fe38a23292c64e7d8fc52423b5bc4c00c /lib/sanitizer_common | |
parent | 16cd8b12c079582001d7adc5e25de51927a79463 (diff) |
[Sanitizers] ASan: detect new/delete calls with mismatched alignment.
ASan allocator stores the requested alignment for new and new[] calls
and on delete and delete[] verifies that alignments do match.
The representable alignments are: default alignment, 8, 16, 32, 64, 128,
256 and 512 bytes. Alignments > 512 are stored as 512, hence two
different alignments > 512 will pass the check (possibly masking the bug),
but limited memory requirements deemed to be a resonable tradeoff for
relaxed conditions.
The feature is controlled by new_delete_type_mismatch flag, the same one
protecting new/delete matching size check.
Differential revision: https://reviews.llvm.org/D38574
Issue: https://github.com/google/sanitizers/issues/799
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@316595 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/sanitizer_common')
0 files changed, 0 insertions, 0 deletions