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// RUN: %clang_tsan %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s
#include "dispatch/dispatch.h"
#include <stdio.h>
long global;
dispatch_semaphore_t done;
void handler(void *arg) {
fprintf(stderr, "global = %ld\n", global);
dispatch_semaphore_signal(done);
}
int main(int argc, const char *argv[]) {
done = dispatch_semaphore_create(0);
dispatch_queue_t queue =
dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
dispatch_source_t source =
dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGHUP, 0, queue);
global = 42;
dispatch_source_set_registration_handler_f(source, handler);
dispatch_resume(source);
dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
return 0;
}
// CHECK: global = 42
// CHECK-NOT: WARNING: ThreadSanitizer
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