39 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s2#include "../test.h"3#include "syscall.h"4#include <errno.h>5#include <sys/types.h>6#include <sys/wait.h>7 8int counter;9 10static void *incrementer(void *p) {11 for (;;)12 __sync_fetch_and_add(&counter, 1);13 return 0;14}15 16int main() {17 pthread_t th1;18 pthread_create(&th1, 0, incrementer, 0);19 for (int i = 0; i < 10; i++) {20 switch (myfork()) {21 default: // parent22 while (wait(0) < 0) {23 }24 fprintf(stderr, ".");25 break;26 case 0: // child27 __sync_fetch_and_add(&counter, 1);28 exit(0);29 break;30 case -1: // error31 fprintf(stderr, "failed to fork (%d)\n", errno);32 exit(1);33 }34 }35 fprintf(stderr, "OK\n");36}37 38// CHECK: OK39