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-rw-r--r--test/msan/dtor-base-access.cc49
1 files changed, 49 insertions, 0 deletions
diff --git a/test/msan/dtor-base-access.cc b/test/msan/dtor-base-access.cc
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+++ b/test/msan/dtor-base-access.cc
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+// 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;
+}