1 files changed, 53 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/simple_stack2.cc b/lib/tsan/lit_tests/simple_stack2.cc
new file mode 100644
index 000000000000..bf27a15ffad5
--- /dev/null
+++ b/lib/tsan/lit_tests/simple_stack2.cc
@@ -0,0 +1,53 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int Global;
+
+void __attribute__((noinline)) foo1() {
+  Global = 42;
+}
+
+void __attribute__((noinline)) bar1() {
+  volatile int tmp = 42;
+  int tmp2 = tmp;
+  (void)tmp2;
+  foo1();
+}
+
+void __attribute__((noinline)) foo2() {
+  volatile int tmp = Global;
+  int tmp2 = tmp;
+  (void)tmp2;
+}
+
+void __attribute__((noinline)) bar2() {
+  volatile int tmp = 42;
+  int tmp2 = tmp;
+  (void)tmp2;
+  foo2();
+}
+
+void *Thread1(void *x) {
+  sleep(1);
+  bar1();
+  return NULL;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, NULL, Thread1, NULL);
+  bar2();
+  pthread_join(t, NULL);
+}
+
+// CHECK:      WARNING: ThreadSanitizer: data race
+// CHECK-NEXT:   Write of size 4 at {{.*}} by thread T1:
+// CHECK-NEXT:     #0 foo1{{.*}} {{.*}}simple_stack2.cc:9{{(:3)?}} ({{.*}})
+// CHECK-NEXT:     #1 bar1{{.*}} {{.*}}simple_stack2.cc:16{{(:3)?}} ({{.*}})
+// CHECK-NEXT:     #2 Thread1{{.*}} {{.*}}simple_stack2.cc:34{{(:3)?}} ({{.*}})
+// CHECK:        Previous read of size 4 at {{.*}} by main thread:
+// CHECK-NEXT:     #0 foo2{{.*}} {{.*}}simple_stack2.cc:20{{(:28)?}} ({{.*}})
+// CHECK-NEXT:     #1 bar2{{.*}} {{.*}}simple_stack2.cc:29{{(:3)?}} ({{.*}})
+// CHECK-NEXT:     #2 main{{.*}} {{.*}}simple_stack2.cc:41{{(:3)?}} ({{.*}})