1 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2 #include "test.h" 3 4 // Test for https://llvm.org/bugs/show_bug.cgi?id=23235 5 // The bug was that synchronization between thread creation and thread start 6 // is not established if pthread_create is followed by pthread_detach. 7 8 int x; 9 10 void *Thread(void *a) { 11 x = 42; 12 barrier_wait(&barrier); 13 return 0; 14 } 15 16 int main() { 17 barrier_init(&barrier, 2); 18 pthread_t t; 19 x = 43; 20 pthread_create(&t, 0, Thread, 0); 21 pthread_detach(t); 22 barrier_wait(&barrier); 23 fprintf(stderr, "PASS\n"); 24 return 0; 25 } 26 27 // CHECK-NOT: WARNING: ThreadSanitizer: data race 28 // CHECK: PASS 29
