1 files changed, 47 insertions, 0 deletions
diff --git a/test/tsan/thread_name.cc b/test/tsan/thread_name.cc
new file mode 100644
index 000000000000..a790c668c084
--- /dev/null
+++ b/test/tsan/thread_name.cc
@@ -0,0 +1,47 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#if defined(__linux__)
+#define USE_PTHREAD_SETNAME_NP __GLIBC_PREREQ(2, 12)
+#elif defined(__FreeBSD__)
+#include <pthread_np.h>
+#define USE_PTHREAD_SETNAME_NP 1
+#define pthread_setname_np pthread_set_name_np
+#else
+#define USE_PTHREAD_SETNAME_NP 0
+#endif
+
+extern "C" void AnnotateThreadName(const char *f, int l, const char *name);
+
+int Global;
+
+void *Thread1(void *x) {
+  sleep(1);
+  AnnotateThreadName(__FILE__, __LINE__, "Thread1");
+  Global++;
+  return NULL;
+}
+
+void *Thread2(void *x) {
+#if USE_PTHREAD_SETNAME_NP
+  pthread_setname_np(pthread_self(), "Thread2");
+#else
+  AnnotateThreadName(__FILE__, __LINE__, "Thread2");
+#endif
+  Global--;
+  return NULL;
+}
+
+int main() {
+  pthread_t t[2];
+  pthread_create(&t[0], NULL, Thread1, NULL);
+  pthread_create(&t[1], NULL, Thread2, NULL);
+  pthread_join(t[0], NULL);
+  pthread_join(t[1], NULL);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:   Thread T1 'Thread1'
+// CHECK:   Thread T2 'Thread2'