1 files changed, 49 insertions, 0 deletions
diff --git a/test/msan/dtor-base-access.cc b/test/msan/dtor-base-access.cc
new file mode 100644
index 0000000000000..bed66fb621db0
--- /dev/null
+++ b/test/msan/dtor-base-access.cc
@@ -0,0 +1,49 @@
+// RUN: %clangxx_msan %s -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
+
+// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
+
+// RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t >%t.out 2>&1
+
+#include <sanitizer/msan_interface.h>
+#include <assert.h>
+
+class Base {
+ public:
+  int *x_ptr;
+  Base(int *y_ptr) {
+    // store value of subclass member
+    x_ptr = y_ptr;
+  }
+  virtual ~Base();
+};
+
+class Derived : public Base {
+ public:
+  int y;
+  Derived():Base(&y) {
+    y = 10;
+  }
+  ~Derived();
+};
+
+Base::~Base() {
+  // ok access its own member
+  assert(__msan_test_shadow(&this->x_ptr, sizeof(this->x_ptr)) == -1);
+  // bad access subclass member
+  assert(__msan_test_shadow(this->x_ptr, sizeof(*this->x_ptr)) != -1);
+}
+
+Derived::~Derived() {
+  // ok to access its own members
+  assert(__msan_test_shadow(&this->y, sizeof(this->y)) == -1);
+  // ok access base class members
+  assert(__msan_test_shadow(&this->x_ptr, sizeof(this->x_ptr)) == -1);
+}
+
+int main() {
+  Derived *d = new Derived();
+  assert(__msan_test_shadow(&d->x_ptr, sizeof(d->x_ptr)) == -1);
+  d->~Derived();
+  assert(__msan_test_shadow(&d->x_ptr, sizeof(d->x_ptr)) != -1);
+  return 0;
+}