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44 lines
1.0 KiB
44 lines
1.0 KiB
4 months ago
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// RUN: %clang_tsan %s -o %t -framework Foundation
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// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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void notify_callback(void *context) {
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// Do nothing.
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}
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int main() {
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NSLog(@"Hello world.");
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dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
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for (int i = 0; i < 300000; i++) {
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dispatch_group_t g = dispatch_group_create();
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dispatch_group_enter(g);
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dispatch_async(q, ^{
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dispatch_group_leave(g);
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});
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dispatch_group_notify(g, q, ^{
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// Do nothing.
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});
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dispatch_release(g);
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}
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for (int i = 0; i < 300000; i++) {
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dispatch_group_t g = dispatch_group_create();
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dispatch_group_enter(g);
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dispatch_async(q, ^{
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dispatch_group_leave(g);
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});
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dispatch_group_notify_f(g, q, NULL, ¬ify_callback);
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dispatch_release(g);
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}
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NSLog(@"Done.");
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}
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// CHECK: Hello world.
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// CHECK: Done.
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// CHECK-NOT: WARNING: ThreadSanitizer
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// CHECK-NOT: CHECK failed
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