1 files changed, 44 insertions, 0 deletions
diff --git a/test/tsan/Darwin/gcd-apply.mm b/test/tsan/Darwin/gcd-apply.mm
new file mode 100644
index 000000000000..e68a4b18205d
--- /dev/null
+++ b/test/tsan/Darwin/gcd-apply.mm
@@ -0,0 +1,44 @@
+// RUN: %clang_tsan %s -o %t -framework Foundation
+// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s
+
+#import <Foundation/Foundation.h>
+
+#import "../test.h"
+
+long global;
+long array[2];
+
+void callback(void *context, size_t i) {
+  long n = global;
+  array[i] = n + i;
+  barrier_wait(&barrier);
+}
+
+int main(int argc, const char *argv[]) {
+  barrier_init(&barrier, 2);
+  fprintf(stderr, "start\n");
+  dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
+
+  global = 42;
+
+  dispatch_apply(100, q, ^(size_t i) {
+    long n = global;
+    array[i] = n + i;
+    barrier_wait(&barrier);
+  });
+
+  for (int i = 0; i < 100; i++) {
+    fprintf(stderr, "array[%d] = %ld\n", i, array[i]);
+  }
+
+  global = 43;
+
+  dispatch_apply_f(100, q, NULL, &callback);
+
+  fprintf(stderr, "done\n");
+  return 0;
+}
+
+// CHECK: start
+// CHECK: done
+// CHECK-NOT: WARNING: ThreadSanitizer