1 // Check that calling dispatch_once from a report callback works. 2 3 // RUN: %clang_tsan %s -o %t -framework Foundation 4 // RUN: %env_tsan_opts=ignore_interceptors_accesses=1 not %run %t 2>&1 | FileCheck %s 5 6 #import <Foundation/Foundation.h> 7 #import <pthread.h> 8 9 long g = 0; 10 long h = 0; 11 void f() { 12 static dispatch_once_t onceToken; 13 dispatch_once(&onceToken, ^{ 14 g++; 15 }); 16 h++; 17 } 18 19 extern "C" void __tsan_on_report() { 20 fprintf(stderr, "Report.\n"); 21 f(); 22 } 23 24 int main() { 25 fprintf(stderr, "Hello world.\n"); 26 27 f(); 28 29 pthread_mutex_t mutex = {0}; 30 pthread_mutex_lock(&mutex); 31 32 fprintf(stderr, "g = %ld.\n", g); 33 fprintf(stderr, "h = %ld.\n", h); 34 fprintf(stderr, "Done.\n"); 35 } 36 37 // CHECK: Hello world. 38 // CHECK: Report. 39 // CHECK: g = 1 40 // CHECK: h = 2 41 // CHECK: Done. 42
