return reference to local variable, good code?

[George2]

Hello everyone,


I am reading some code from other people, there are some code like this,

class Foo {
 
};
 
Foo& func()
{
    Foo foo;
    return foo;
}
 
int main()
{
    Foo& foo = func();
 
    return 0;
}
 

I want to confirm with you that it is not good code, since we return a reference to local object instance, right? Even if the code has expected function currently.


thanks in advance,
George

[JosAH]

That code is as wrong as it can be: variable 'foo' doesn't exist anymore after the
function has returned, so the reference points somewhere into la-la-land.

kind regards,

Jos

[George2]

Thanks for your advice, Jos!


My question is answered.

That code is as wrong as it can be: variable 'foo' doesn't exist anymore after the
function has returned, so the reference points somewhere into la-la-land.

kind regards,

Jos

regards,
George