| // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
| #include "test.h" |
| |
| // Test for https://llvm.org/bugs/show_bug.cgi?id=23235 |
| // The bug was that synchronization between thread creation and thread start |
| // is not established if pthread_create is followed by pthread_detach. |
| |
| int x; |
| |
| void *Thread(void *a) { |
| x = 42; |
| barrier_wait(&barrier); |
| return 0; |
| } |
| |
| int main() { |
| barrier_init(&barrier, 2); |
| pthread_t t; |
| x = 43; |
| pthread_create(&t, 0, Thread, 0); |
| pthread_detach(t); |
| barrier_wait(&barrier); |
| printf("PASS\n"); |
| return 0; |
| } |
| |
| // CHECK-NOT: WARNING: ThreadSanitizer: data race |
| // CHECK: PASS |
