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| author | Julian Lettner <jlettner@apple.com> | 2019-01-07 19:19:23 +0000 |
|---|---|---|
| committer | Julian Lettner <jlettner@apple.com> | 2019-01-07 19:19:23 +0000 |
| commit | a6d29024edb02516728fe8c2983841e1fb66e993 (patch) | |
| tree | e6388494612f7e6d0d609d526964b07743951821 /lldb/packages/Python/lldbsuite/test/sample_test/TestSampleTest.py | |
| parent | e34f2bb807b2de98a60134a22ff26c9d39ff4859 (diff) | |
| download | bcm5719-llvm-a6d29024edb02516728fe8c2983841e1fb66e993.tar.gz bcm5719-llvm-a6d29024edb02516728fe8c2983841e1fb66e993.zip | |
[TSan] Support Objective-C @synchronized with tagged pointers
Summary:
Objective-C employs tagged pointers, that is, small objects/values may be encoded directly in the pointer bits. The resulting pointer is not backed by an allocation/does not point to a valid memory. TSan infrastructure requires a valid address for `Acquire/Release` and `Mutex{Lock/Unlock}`.
This patch establishes such a mapping via a "dummy allocation" for each encountered tagged pointer value.
Reviewers: dcoughlin, kubamracek, dvyukov, delcypher
Reviewed By: dvyukov
Subscribers: llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D56238
llvm-svn: 350556
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/sample_test/TestSampleTest.py')
0 files changed, 0 insertions, 0 deletions
