| 1 | // RUN: %clangxx_msan -fno-sanitize-memory-param-retval -O0 %s -o %t && %run %t %p |
| 2 | |
| 3 | // PR17377: C++ module destructors get stale argument shadow. |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | class A { |
| 8 | public: |
| 9 | // This destructor get stale argument shadow left from the call to f(). |
| 10 | ~A() { |
| 11 | if (this) |
| 12 | exit(status: 0); |
| 13 | } |
| 14 | }; |
| 15 | |
| 16 | A a; |
| 17 | |
| 18 | __attribute__((noinline)) |
| 19 | void f(long x) { |
| 20 | } |
| 21 | |
| 22 | int main(void) { |
| 23 | long x; |
| 24 | long * volatile p = &x; |
| 25 | // This call poisons TLS shadow for the first function argument. |
| 26 | f(x: *p); |
| 27 | return 0; |
| 28 | } |
| 29 | |