1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-DIE 2 // RUN: %clangxx_tsan -O1 %s -o %t && TSAN_OPTIONS="die_after_fork=0" %run %t 2>&1 | FileCheck %s -check-prefix=CHECK-NODIE 3 #include <stdlib.h> 4 #include <stdio.h> 5 #include <errno.h> 6 #include <pthread.h> 7 #include <unistd.h> 8 #include <sys/types.h> 9 #include <sys/wait.h> 10 sleeper(void * p)11static void *sleeper(void *p) { 12 sleep(10); 13 return 0; 14 } 15 main()16int main() { 17 pthread_t th; 18 pthread_create(&th, 0, sleeper, 0); 19 switch (fork()) { 20 default: // parent 21 while (wait(0) < 0) {} 22 break; 23 case 0: // child 24 { 25 pthread_t th2; 26 pthread_create(&th2, 0, sleeper, 0); 27 exit(0); 28 break; 29 } 30 case -1: // error 31 fprintf(stderr, "failed to fork (%d)\n", errno); 32 exit(1); 33 } 34 fprintf(stderr, "OK\n"); 35 } 36 37 // CHECK-DIE: ThreadSanitizer: starting new threads after multi-threaded fork is not supported 38 // CHECK-DIE: OK 39 40 // CHECK-NODIE-NOT: ThreadSanitizer: starting new threads after multi-threaded fork is not supported 41 // CHECK-NODIE: OK 42 43