I haven’t been able to find an answer that relates specifically to my question. It’s a bit of a “strange” case in terms of what I’ve seen.

So I have a class Child2 that inherits from Child1 that in turn inherits from the Parent. The Parent doesn’t have a constructor.

Here is how I inherit:

Child1.h:

class Child1 : virtual public Parent

This is the function that I want to call from Child2‘s constructor:

void Child1::foo(unsigned int i)
{
    // ...
}

Child2

Child2::Child2() : Child1()
{
   foo(10);
}

There are no functions called foo() in Child2 so there shouldn’t be any ambiguity if I understand correctly.

However, I encounter this error:

Child2.cpp: In constructor ‘Child2::Child2()’:
Child2.cpp:12:28: error: type ‘Child1’ is not a direct base of ‘Child2’
Child2::Child2() : Child1()

Child1‘s constructor is working, so I’ve left it out. I’m not certain if it is important in this case.