IntelliSense turns class types into (bool)false in a simple scenario

[sean-mcmanus]

Use

namespace A
{
    class B
    {
        void foo(B &b);
        struct C { bool b = false;  };
        void bar(B &b);
    };
}

Hover over the “B” in the bar param list, and/or do Find All References on the “B” in “class B”.

Bug: IntelliSense shows “(bool)false” on hover and Find All References incorrectly give “Not a reference” for the bar case.

Reported as a VS bug at https://developercommunity.visualstudio.com/content/problem/949085/c-intellisense-breaks-in-a-simple-scenario-turning.html