diff options
| author | Kostya Serebryany <kcc@google.com> | 2013-01-25 11:46:22 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2013-01-25 11:46:22 +0000 |
| commit | 65199f1b253c4bfb225805629217acb8f0b1e185 (patch) | |
| tree | 1c5ad5bb27171feeae8df5b1126f835f933f208b /lib/sanitizer_common/sanitizer_allocator.cc | |
| parent | 6503100c43c8951f436698b47362cdc8c2ec0a69 (diff) | |
[sanitizer] fix calloc overflow in asan/tsan/msan
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@173441 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/sanitizer_common/sanitizer_allocator.cc')
| -rw-r--r-- | lib/sanitizer_common/sanitizer_allocator.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_allocator.cc b/lib/sanitizer_common/sanitizer_allocator.cc index b13a7c6c1..26baf73a1 100644 --- a/lib/sanitizer_common/sanitizer_allocator.cc +++ b/lib/sanitizer_common/sanitizer_allocator.cc @@ -75,4 +75,9 @@ void SetLowLevelAllocateCallback(LowLevelAllocateCallback callback) { low_level_alloc_callback = callback; } +bool CallocShouldReturnNullDueToOverflow(uptr size, uptr n) { + uptr mul = size * n; + return mul < size || mul < n; +} + } // namespace __sanitizer |