Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 1 | // 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 |
| 2 | |
| 3 | // 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 |
| 4 | |
| 5 | // 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 |
| 6 | |
| 7 | #include <sanitizer/msan_interface.h> |
| 8 | #include <assert.h> |
| 9 | |
| 10 | class Base { |
| 11 | public: |
| 12 | int *x_ptr; |
| 13 | Base(int *y_ptr) { |
| 14 | // store value of subclass member |
| 15 | x_ptr = y_ptr; |
| 16 | } |
| 17 | virtual ~Base(); |
| 18 | }; |
| 19 | |
| 20 | class Derived : public Base { |
| 21 | public: |
| 22 | int y; |
| 23 | Derived():Base(&y) { |
| 24 | y = 10; |
| 25 | } |
| 26 | ~Derived(); |
| 27 | }; |
| 28 | |
| 29 | Base::~Base() { |
| 30 | // ok access its own member |
| 31 | assert(__msan_test_shadow(&this->x_ptr, sizeof(this->x_ptr)) == -1); |
| 32 | // bad access subclass member |
| 33 | assert(__msan_test_shadow(this->x_ptr, sizeof(*this->x_ptr)) != -1); |
| 34 | } |
| 35 | |
| 36 | Derived::~Derived() { |
| 37 | // ok to access its own members |
| 38 | assert(__msan_test_shadow(&this->y, sizeof(this->y)) == -1); |
| 39 | // ok access base class members |
| 40 | assert(__msan_test_shadow(&this->x_ptr, sizeof(this->x_ptr)) == -1); |
| 41 | } |
| 42 | |
| 43 | int main() { |
| 44 | Derived *d = new Derived(); |
| 45 | assert(__msan_test_shadow(&d->x_ptr, sizeof(d->x_ptr)) == -1); |
| 46 | d->~Derived(); |
| 47 | assert(__msan_test_shadow(&d->x_ptr, sizeof(d->x_ptr)) != -1); |
| 48 | return 0; |
| 49 | } |