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| author | Mitch Phillips <31459023+hctim@users.noreply.github.com> | 2021-07-08 13:06:34 -0700 |
|---|---|---|
| committer | Mitch Phillips <31459023+hctim@users.noreply.github.com> | 2021-07-08 13:06:42 -0700 |
| commit | d458f379324967c3c408be06e21aad9bc92c54cb (patch) | |
| tree | 8390b96224088ed416a1f97174b6340d7dd66c7f /clang/lib/Basic/FileManager.cpp | |
| parent | 915e07605cd5db58db2ea9dd0d2a0a921206d01e (diff) | |
| download | llvm-d458f379324967c3c408be06e21aad9bc92c54cb.zip llvm-d458f379324967c3c408be06e21aad9bc92c54cb.tar.gz llvm-d458f379324967c3c408be06e21aad9bc92c54cb.tar.bz2 | |
[GWP-ASan] Change unreachable -> trap to work around DCE bug.
trapOnAddress is designed to SEGV on a specific address. Unfortunately,
with an IR change, __builtin_unreachable() ends up doing DCE on things
that have side effects, like the load that causes the trap.
Change to __builtin_trap() to avoid the optimisation.
Root cause is still an LLVM bug, and tracked in
https://bugs.llvm.org/show_bug.cgi?id=47480.
Reviewed By: eugenis
Differential Revision: https://reviews.llvm.org/D105654
Diffstat (limited to 'clang/lib/Basic/FileManager.cpp')
0 files changed, 0 insertions, 0 deletions