35 lines
784 B
Plaintext
35 lines
784 B
Plaintext
// RUN: %clangxx_tsan %s -o %t -framework Foundation
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// RUN: %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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int main() {
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fprintf(stderr, "start\n");
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dispatch_queue_t background_q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
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dispatch_queue_t main_q = dispatch_get_main_queue();
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dispatch_async(background_q, ^{
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__block long block_var = 0;
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dispatch_sync(main_q, ^{
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block_var = 42;
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});
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fprintf(stderr, "block_var = %ld\n", block_var);
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dispatch_sync(dispatch_get_main_queue(), ^{
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CFRunLoopStop(CFRunLoopGetCurrent());
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});
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});
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CFRunLoopRun();
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fprintf(stderr, "done\n");
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}
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// CHECK: start
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// CHECK: block_var = 42
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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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