1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2*bcaeed49SFangrui Song // Regtest for https://github.com/google/sanitizers/issues/447 3*bcaeed49SFangrui Song // This is a correct program and tsan should not report a race. 4*bcaeed49SFangrui Song #include "test.h" 5*bcaeed49SFangrui Song 6*bcaeed49SFangrui Song int g; 7*bcaeed49SFangrui Song __attribute__((noinline)) foo(int cond)8*bcaeed49SFangrui Songint foo(int cond) { 9*bcaeed49SFangrui Song if (cond) 10*bcaeed49SFangrui Song return g; 11*bcaeed49SFangrui Song return 0; 12*bcaeed49SFangrui Song } 13*bcaeed49SFangrui Song Thread1(void * p)14*bcaeed49SFangrui Songvoid *Thread1(void *p) { 15*bcaeed49SFangrui Song barrier_wait(&barrier); 16*bcaeed49SFangrui Song long res = foo((long)p); 17*bcaeed49SFangrui Song return (void*) res; 18*bcaeed49SFangrui Song } 19*bcaeed49SFangrui Song main()20*bcaeed49SFangrui Songint main() { 21*bcaeed49SFangrui Song barrier_init(&barrier, 2); 22*bcaeed49SFangrui Song pthread_t t; 23*bcaeed49SFangrui Song pthread_create(&t, 0, Thread1, 0); 24*bcaeed49SFangrui Song g = 1; 25*bcaeed49SFangrui Song barrier_wait(&barrier); 26*bcaeed49SFangrui Song pthread_join(t, 0); 27*bcaeed49SFangrui Song fprintf(stderr, "PASS\n"); 28*bcaeed49SFangrui Song // CHECK-NOT: ThreadSanitizer: data race 29*bcaeed49SFangrui Song // CHECK: PASS 30*bcaeed49SFangrui Song } 31