| // RUN: %clang_cl_asan -O0 %s -Fe%t |
| // RUN: not %run %t 2>&1 | FileCheck %s |
| |
| class Parent { |
| public: |
| int field; |
| }; |
| |
| class Child : public Parent { |
| public: |
| int extra_field; |
| }; |
| |
| int main(void) { |
| Parent p; |
| Child *c = (Child*)&p; // Intentional error here! |
| c->extra_field = 42; |
| // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] |
| // CHECK: WRITE of size 4 at [[ADDR]] thread T0 |
| // CHECK-NEXT: {{#0 0x[0-9a-f]* in main .*wrong_downcast_on_stack.cc}}:[[@LINE-3]] |
| // CHECK: [[ADDR]] is located in stack of thread T0 at offset [[OFFSET:[0-9]+]] in frame |
| // CHECK-NEXT: {{#0 0x[0-9a-f]* in main }} |
| // CHECK: 'p'{{.*}} <== Memory access at offset [[OFFSET]] overflows this variable |
| return 0; |
| } |
| |
