Find All References shows "Not a Reference" when different type aliases are used in the definition and declaration

[sean-mcmanus]

// def.h
using myInt = int;
void func(myInt i);

// def.cpp
#include "def.h"
void func(int i) {}

// def_usage.cpp
#include "def.h"
void main()
{
    func(0);
}

Find All References is not resolving the type alias, causing the type checking to fail (definition and usage aren't references of each other). It seems like we should at least investigate to see if it's a quick fix or not (i.e. we might just be missing a call to resolving the type alias). Otherwise, the unification work might fix this if it involves extensive database look up work.

The workaround is to change the definition to use the same type alias as the declaration (which would usually be the recommended style).