-// RUN: %clang_tsan %s -o %t
+// RUN: %clang_tsan %s -o %t -undefined dynamic_lookup
// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'
#include "dispatch/dispatch.h"
#include <stdio.h>
+// Allow compilation with pre-macOS 10.14 (and aligned) SDKs
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
+void dispatch_async_and_wait(dispatch_queue_t queue,
+ DISPATCH_NOESCAPE dispatch_block_t block);
+
long global;
int main() {
+ // Guard execution on pre-macOS 10.14 (and aligned) platforms
+ if (dispatch_async_and_wait == NULL) {
+ fprintf(stderr, "Done.\n");
+ return 0;
+ }
+
dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
dispatch_semaphore_t s = dispatch_semaphore_create(0);
global++;
fprintf(stderr, "Done.\n");
+ return 0;
}
// CHECK: Done.