diff options
Diffstat (limited to 'test/tsan/thread_detach2.c')
-rw-r--r-- | test/tsan/thread_detach2.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/tsan/thread_detach2.c b/test/tsan/thread_detach2.c new file mode 100644 index 000000000000..8133980ba5a1 --- /dev/null +++ b/test/tsan/thread_detach2.c @@ -0,0 +1,28 @@ +// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s +#include "test.h" + +// Test for https://llvm.org/bugs/show_bug.cgi?id=23235 +// The bug was that synchronization between thread creation and thread start +// is not established if pthread_create is followed by pthread_detach. + +int x; + +void *Thread(void *a) { + x = 42; + barrier_wait(&barrier); + return 0; +} + +int main() { + barrier_init(&barrier, 2); + pthread_t t; + x = 43; + pthread_create(&t, 0, Thread, 0); + pthread_detach(t); + barrier_wait(&barrier); + printf("PASS\n"); + return 0; +} + +// CHECK-NOT: WARNING: ThreadSanitizer: data race +// CHECK: PASS |