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These functions from C++ ABI are defined in compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp and are supposed to replace implementations from libstdc++/libc++abi. We need to export them similar to why we need to export other interceptors and TSan runtime functions - e.g. if a dlopen-ed shared library depends on `__cxa_guard_acquire`, it needs to pick up the exported definition from the TSan runtime that was linked into the main executable calling the dlopen() However, because the `__cxa_guard_` functions don't use traditional interceptor machinery, they are omitted from the auto-generated `libclang_rt.tsan.a.syms` files. Fix this by adding them to tsan.syms.extra file explicitly. Co-authored-by: Vitaly Buka <vitalybuka@google.com>
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. ================================