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Commit 3a748d60 authored by Kuba Brecka's avatar Kuba Brecka
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[tsan] Fix the behavior of OSAtomicTestAndClear 

The system implementation of OSAtomicTestAndClear returns the original bit, but the TSan interceptor has a bug which always returns zero from the function. This patch fixes this and adds a test.

Differential Revision: https://reviews.llvm.org/D23061

llvm-svn: 277461
parent 58f56288
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