1 files changed, 31 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/ignore_race.cc b/lib/tsan/lit_tests/ignore_race.cc
new file mode 100644
index 000000000000..23d74d0ed840
--- /dev/null
+++ b/lib/tsan/lit_tests/ignore_race.cc
@@ -0,0 +1,31 @@
+// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int Global;
+
+extern "C" void AnnotateIgnoreWritesBegin(const char *f, int l);
+extern "C" void AnnotateIgnoreWritesEnd(const char *f, int l);
+extern "C" void AnnotateIgnoreReadsBegin(const char *f, int l);
+extern "C" void AnnotateIgnoreReadsEnd(const char *f, int l);
+
+void *Thread(void *x) {
+  AnnotateIgnoreWritesBegin(__FILE__, __LINE__);
+  AnnotateIgnoreReadsBegin(__FILE__, __LINE__);
+  Global = 42;
+  AnnotateIgnoreReadsEnd(__FILE__, __LINE__);
+  AnnotateIgnoreWritesEnd(__FILE__, __LINE__);
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  sleep(1);
+  Global = 43;
+  pthread_join(t, 0);
+  printf("OK\n");
+}
+
+// CHECK-NOT: WARNING: ThreadSanitizer: data race