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