1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include <pthread.h> 3 #include <stdlib.h> 4 #include <stdio.h> 5 #include <unistd.h> 6 #include <errno.h> 7 8 pthread_mutex_t m; 9 int x; 10 11 void *thr(void *p) { 12 pthread_mutex_lock(&m); 13 x = 42; 14 return 0; 15 } 16 17 int main() { 18 pthread_mutexattr_t a; 19 pthread_mutexattr_init(&a); 20 pthread_mutexattr_setrobust(&a, PTHREAD_MUTEX_ROBUST); 21 pthread_mutex_init(&m, &a); 22 pthread_t th; 23 pthread_create(&th, 0, thr, 0); 24 sleep(1); 25 if (pthread_mutex_trylock(&m) != EOWNERDEAD) { 26 fprintf(stderr, "not EOWNERDEAD\n"); 27 exit(1); 28 } 29 x = 43; 30 pthread_join(th, 0); 31 fprintf(stderr, "DONE\n"); 32 } 33 34 // This is a false positive, tsan must not bark at the data race. 35 // But currently it does. 36 // CHECK-NOT: WARNING: ThreadSanitizer WARNING: double lock of mutex 37 // CHECK: WARNING: ThreadSanitizer: data race 38 // CHECK-NOT: EOWNERDEAD 39 // CHECK: DONE 40 // CHECK-NOT: WARNING: ThreadSanitizer 41 42
