What happens when we combine RAII and GOTO ?
- by Robert Gould
I'm wondering, for no other purpose than pure curiosity (because no one SHOULD EVER write code like this!) about how the behavior of RAII meshes with the use of Goto (lovely idea isn't it).
class Two
{
public:
~Two()
{
printf("2,");
}
};
class Ghost
{
public:
~Ghost()
{
printf(" BOO! ");
}
};
void foo()
{
{
Two t;
printf("1,");
goto JUMP;
}
Ghost g;
JUMP:
printf("3");
}
int main()
{
foo();
}
When running the following code in VS2005 I get the following output:
1,2,3 BOO!
However I imagined, guessed, hoped that 'BOO!' wouldn't actually appear as the Ghost should have never been instantiated (IMHO, because I don't know the actual expected behavior of this code).
Any Guru out there knows what's up?
Just realized that if I instantiate an explicit constructor for Ghost the code doesn't compile...
class Ghost
{
public:
Ghost()
{
printf(" HAHAHA! ");
}
~Ghost()
{
printf(" BOO! ");
}
};
Ah, the mystery ...
