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| author | David Majnemer <david.majnemer@gmail.com> | 2014-11-06 08:55:23 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2014-11-06 08:55:23 +0000 |
| commit | 3400563ea6160dce01a0fb4741bacc4b61db74ad (patch) | |
| tree | 65de8aacf79208120323f06efd775625d6015306 /clang/lib/Basic/Targets.cpp | |
| parent | 51ff559500c460f7f779019c1bfa964a1c2f223d (diff) | |
| download | bcm5719-llvm-3400563ea6160dce01a0fb4741bacc4b61db74ad.tar.gz bcm5719-llvm-3400563ea6160dce01a0fb4741bacc4b61db74ad.zip | |
UBSan: Teach isDerivedFromAtOffset and findBaseAtOffset about vbases
When the __virtual_mask is set, __offset_flags >> __offset_shift yields
an offset into the vtable. Dereferencing this vtable slot gets us the
vbase offset.
Adjust a test case to verify that this, in fact, works.
Differential Revision: http://reviews.llvm.org/D6074
llvm-svn: 221445
Diffstat (limited to 'clang/lib/Basic/Targets.cpp')
0 files changed, 0 insertions, 0 deletions
