1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2 3 // Make sure TSan doesn't deadlock on a file stream lock at program shutdown. 4 // See https://code.google.com/p/thread-sanitizer/issues/detail?id=47 5 #include <pthread.h> 6 #include <stdio.h> 7 #include <unistd.h> 8 9 void *thread(void *unused) { 10 char *line = NULL; 11 size_t size; 12 int fd[2]; 13 pipe(fd); 14 // Forge a non-standard stream to make sure it's not closed. 15 FILE *stream = fdopen(fd[0], "r"); 16 while (1) { 17 volatile int res = getline(&line, &size, stream); 18 (void)res; 19 } 20 return NULL; 21 } 22 23 int main() { 24 pthread_t t; 25 pthread_attr_t a; 26 pthread_attr_init(&a); 27 pthread_attr_setdetachstate(&a, PTHREAD_CREATE_DETACHED); 28 pthread_create(&t, &a, thread, NULL); 29 pthread_attr_destroy(&a); 30 fprintf(stderr, "DONE\n"); 31 return 0; 32 // ThreadSanitizer used to hang here because of a deadlock on a file stream. 33 } 34 35 // CHECK: DONE 36
