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| author | Ivan Krasin <krasin@chromium.org> | 2016-06-02 18:36:12 +0000 |
|---|---|---|
| committer | Ivan Krasin <krasin@chromium.org> | 2016-06-02 18:36:12 +0000 |
| commit | 048155c399a97c31b1b1bf1f99ed12f30dd9c441 (patch) | |
| tree | 76d3fd71a5ae9d894d124d2a163426cf3f42f311 /llvm/lib/Support/Threading.cpp | |
| parent | 63f78b020636d8a486f24564bc2255656f9c71f7 (diff) | |
| download | bcm5719-llvm-048155c399a97c31b1b1bf1f99ed12f30dd9c441.tar.gz bcm5719-llvm-048155c399a97c31b1b1bf1f99ed12f30dd9c441.zip | |
UBSan: crash less often on corrupted Vtables.
Summary:
This CL adds a weak check for a Vtable prefix: for a well-formed
Vtable, we require the prefix to be within [-1<<20; 1<<20].
Practically, this solves most of the known cases when UBSan segfaults
without providing any useful diagnostics.
Reviewers: pcc
Subscribers: kubabrecka
Differential Revision: http://reviews.llvm.org/D19750
llvm-svn: 271560
Diffstat (limited to 'llvm/lib/Support/Threading.cpp')
0 files changed, 0 insertions, 0 deletions
