[SOLVED] How can I disambiguate a constructor call with parameter from a named instance creation?

How can I disambiguate a constructor call with parameter from a named instance creation?

In this example, the last line fails to compile. I understand why, but I wonder how I can make the compiler understand that I want to call Class(const int &) to create an unnamed instance, instead of trying to call the undefined default constructor and creating an instance named i:

struct Class {
    Class(const int &) {}
};

void foo() {
    int i;

    // Works
    Class(int(i));

    // Fails
    Class(i);
}

Error in MSVC:

C2371   'i': redefinition; different basic types
E0291   no default constructor exists for class "Class"

Solution

You need to use brace initialization so that the grammar does not think you are trying to create an object named i of type Class. For you, that means

Class{i};

will create an unnamed temporary object that will be destroyed at the end of the full expression.