When you have too many warnings in a piece of code and then track down a corruption issue...

argh.cpp

#include <cstdio>

class C {
 public:
	C() {
		printf("%s this=%p\n", __func__, this);
	}
	~C() {
		printf("%s this=%p\n", __func__, this);
	}
};

C nasty()
{
	// FTW
}

int main() {
	nasty();
}