1// RUN: %clang_tsan %s -o %t -framework Foundation 2// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s 3 4#import <Foundation/Foundation.h> 5 6long global; 7 8void handler(void *arg) { 9 fprintf(stderr, "global = %ld\n", global); 10 11 dispatch_sync(dispatch_get_main_queue(), ^{ 12 CFRunLoopStop(CFRunLoopGetCurrent()); 13 }); 14} 15 16int main(int argc, const char *argv[]) { 17 dispatch_queue_t queue = 18 dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 19 20 dispatch_source_t source = 21 dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGHUP, 0, queue); 22 23 global = 42; 24 25 dispatch_source_set_registration_handler_f(source, handler); 26 27 dispatch_resume(source); 28 29 CFRunLoopRun(); 30 31 return 0; 32} 33 34// CHECK: global = 42 35// CHECK-NOT: WARNING: ThreadSanitizer 36