// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s #include "test.h" int Global; pthread_mutex_t mtx1; pthread_mutex_t mtx2; void *Thread1(void *x) { pthread_mutex_lock(&mtx1); pthread_mutex_lock(&mtx2); Global++; pthread_mutex_unlock(&mtx2); pthread_mutex_unlock(&mtx1); barrier_wait(&barrier); return NULL; } void *Thread2(void *x) { barrier_wait(&barrier); Global--; return NULL; } int main() { barrier_init(&barrier, 2); // CHECK: WARNING: ThreadSanitizer: data race // CHECK: Write of size 4 at {{.*}} by thread T2: // CHECK: Previous write of size 4 at {{.*}} by thread T1 // CHECK: (mutexes: write [[M1:M[0-9]+]], write [[M2:M[0-9]+]]): // CHECK: Mutex [[M1]] (0x{{.*}}) created at: // CHECK: #0 pthread_mutex_init // CHECK: #1 main {{.*}}/mutexset4.cc:[[@LINE+4]] // CHECK: Mutex [[M2]] (0x{{.*}}) created at: // CHECK: #0 pthread_mutex_init // CHECK: #1 main {{.*}}/mutexset4.cc:[[@LINE+2]] pthread_mutex_init(&mtx1, 0); pthread_mutex_init(&mtx2, 0); pthread_t t[2]; pthread_create(&t[0], NULL, Thread1, NULL); pthread_create(&t[1], NULL, Thread2, NULL); pthread_join(t[0], NULL); pthread_join(t[1], NULL); pthread_mutex_destroy(&mtx1); pthread_mutex_destroy(&mtx2); }