5716928ae2
TSan can produce false positives in code that uses C++11 threading, as it doesn't see synchronization inside standard library. See http://lists.cs.uiuc.edu/pipermail/cfe-dev/2014-February/035408.html for an example of such case. We may build custom TSan-instrumented version libcxx to fight with that. This change adds build rules for libcxx_tsan and integrates it into testing infrastructure. llvm-svn: 208737
25 lines
497 B
C++
25 lines
497 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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#include <stdio.h>
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#include <memory>
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#include <thread>
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int main() {
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int v1 = 0;
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int v2 = 0;
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std::thread t1;
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std::thread t2;
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{
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auto thingy = std::make_shared<int>(42);
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t1 = std::thread([thingy, &v1] { v1 = *thingy; });
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t2 = std::thread([thingy, &v2] { v2 = *thingy; });
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}
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t1.join();
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t2.join();
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printf("%d %d\n", v1, v2);
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// CHECK-NOT: ThreadSanitizer: data race
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// CHECK: 42 42
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return 0;
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}
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