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 6#import "../test.h" 7 8long global; 9long array[2]; 10 11void callback(void *context, size_t i) { 12 long n = global; 13 array[i] = n + i; 14 barrier_wait(&barrier); 15} 16 17int main(int argc, const char *argv[]) { 18 barrier_init(&barrier, 2); 19 fprintf(stderr, "start\n"); 20 dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 21 22 global = 42; 23 24 dispatch_apply(100, q, ^(size_t i) { 25 long n = global; 26 array[i] = n + i; 27 barrier_wait(&barrier); 28 }); 29 30 for (int i = 0; i < 100; i++) { 31 fprintf(stderr, "array[%d] = %ld\n", i, array[i]); 32 } 33 34 global = 43; 35 36 dispatch_apply_f(100, q, NULL, &callback); 37 38 fprintf(stderr, "done\n"); 39 return 0; 40} 41 42// CHECK: start 43// CHECK: done 44// CHECK-NOT: WARNING: ThreadSanitizer 45