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481a55a3d9
Follows the discussion here: https://github.com/llvm/llvm-project/pull/129309 Recently, the test `TestRtsan.AccessingALargeAtomicVariableDiesWhenRealtime` has been failing on newer MacOS versions, because the internal locking mechanism in `std::atomic<T>::load` (for types `T` that are larger than the hardware lock-free limit), has changed to a function that wasn't being intercepted by rtsan. This PR introduces an interceptor for `_os_nospin_lock_lock`, which is the new internal locking mechanism. _Note: we'd probably do well to introduce interceptors for `_os_nospin_lock_unlock` (and `os_unfair_lock_unlock`) too, which also appear to have blocking implementations. This can follow in a separate PR._
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================