1 // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s 2 #include "../test.h" 3 #include "syscall.h" 4 #include <errno.h> 5 #include <sys/types.h> 6 #include <sys/wait.h> 7 8 int counter; 9 incrementer(void * p)10static void *incrementer(void *p) { 11 for (;;) 12 __sync_fetch_and_add(&counter, 1); 13 return 0; 14 } 15 main()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: // parent 22 while (wait(0) < 0) { 23 } 24 fprintf(stderr, "."); 25 break; 26 case 0: // child 27 __sync_fetch_and_add(&counter, 1); 28 exit(0); 29 break; 30 case -1: // error 31 fprintf(stderr, "failed to fork (%d)\n", errno); 32 exit(1); 33 } 34 } 35 fprintf(stderr, "OK\n"); 36 } 37 38 // CHECK: OK 39