forked from OSchip/llvm-project
29 lines
486 B
C++
29 lines
486 B
C++
|
// RUN: %clangxx_msan -O0 %s -o %t && %run %t %p
|
||
|
|
|
||
|
|
// PR17377: C++ module destructors get stale argument shadow.
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
class A {
|
||
|
|
public:
|
||
|
|
// This destructor get stale argument shadow left from the call to f().
|
||
|
|
~A() {
|
||
|
|
if (this)
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
A a;
|
||
|
|
|
||
|
|
__attribute__((noinline))
|
||
|
|
void f(long x) {
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(void) {
|
||
|
|
long x;
|
||
|
|
long * volatile p = &x;
|
||
|
|
// This call poisons TLS shadow for the first function argument.
|
||
|
|
f(*p);
|
||
|
|
return 0;
|
||
|
|
}
|