1 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2 #include "test.h" 3 4 int Global; 5 6 extern "C" void AnnotateIgnoreWritesBegin(const char *f, int l); 7 extern "C" void AnnotateIgnoreWritesEnd(const char *f, int l); 8 extern "C" void AnnotateIgnoreReadsBegin(const char *f, int l); 9 extern "C" void AnnotateIgnoreReadsEnd(const char *f, int l); 10 11 void *Thread(void *x) { 12 AnnotateIgnoreWritesBegin(__FILE__, __LINE__); 13 AnnotateIgnoreReadsBegin(__FILE__, __LINE__); 14 Global = 42; 15 AnnotateIgnoreReadsEnd(__FILE__, __LINE__); 16 AnnotateIgnoreWritesEnd(__FILE__, __LINE__); 17 barrier_wait(&barrier); 18 return 0; 19 } 20 21 int main() { 22 barrier_init(&barrier, 2); 23 pthread_t t; 24 pthread_create(&t, 0, Thread, 0); 25 barrier_wait(&barrier); 26 Global = 43; 27 pthread_join(t, 0); 28 fprintf(stderr, "OK\n"); 29 } 30 31 // CHECK-NOT: WARNING: ThreadSanitizer: data race 32
