1 files changed, 28 insertions, 0 deletions
diff --git a/test/tsan/global_race.cc b/test/tsan/global_race.cc
new file mode 100644
index 000000000000..e12bb1d220f8
--- /dev/null
+++ b/test/tsan/global_race.cc
@@ -0,0 +1,28 @@
+// RUN: %clangxx_tsan -O1 %s -o %T/global_race.cc.exe && %deflake %run %T/global_race.cc.exe | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <unistd.h>
+
+int GlobalData[10];
+
+void *Thread(void *a) {
+  sleep(1);
+  GlobalData[2] = 42;
+  return 0;
+}
+
+int main() {
+  // On FreeBSD, the %p conversion specifier works as 0x%x and thus does not
+  // match to the format used in the diagnotic message.
+  fprintf(stderr, "addr=0x%012lx\n", (unsigned long) GlobalData);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  GlobalData[2] = 43;
+  pthread_join(t, 0);
+}
+
+// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK: Location is global 'GlobalData' of size 40 at [[ADDR]] (global_race.cc.exe+0x{{[0-9,a-f]+}})
+