vendor/compiler-rt/compiler-rt-r172839

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/tsan/lit_tests/stack_race.cc b/lib/tsan/lit_tests/stack_race.cc
new file mode 100644
index 000000000000..beeb57353bf3
--- /dev/null
+++ b/lib/tsan/lit_tests/stack_race.cc
@@ -0,0 +1,20 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stddef.h>
+
+void *Thread(void *a) {
+  *(int*)a = 43;
+  return 0;
+}
+
+int main() {
+  int Var = 42;
+  pthread_t t;
+  pthread_create(&t, 0, Thread, &Var);
+  Var = 43;
+  pthread_join(t, 0);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:   Location is stack of main thread.
+