Question

Basically this is a follow up of this question about most vexing parse. I can understand that this is due to the ambiguity between the function declaration and variable definition.

But in Comeau online, I just tired the following.

class T{

public:

    T(int i){
    }

    int fun1(){
        return 1;
    }

};

int main()
{
    T myT(10); // I thought it'd be a function declaration that takes an int and returns a type T
    myT.fun1(); // and a compiler error out here.
} 

But it compiles fine and there were no errors. I looked into the standard docs but couldn’t come to a reasoning.

So, what am I missing here?

Answer 1

The 10 cannot be a parameter type name, so this must be a variable declaration.

The compiler must choose a function declaration when it can do that, but in many cases like this it cannot and there is no ambiguity.