Types are handled wrong when using namespaces

[peckto]

Unexpected behavior

When using namespaces, types are not associated with the correct namespace.
As a result, function calls are not resolved.

Code of interest

namespace ABC {
    namespace XYZ {
        struct A {
            A();
            void foo();
        };
    }
}

using namespace ABC::XYZ;
using namespace ABC;

int main() {
        ABC::XYZ::A a;
        XYZ::A b;
        A c;

        a.foo();
        b.foo();
        c.foo();

	return 0;
}

All three variables (a, b, c) should have the same type.

Similar behavior:

namespace ABC {
    namespace XYZ {
        struct A {
            void foo();
        };
    }
}


namespace ABC {
    namespace XYZ {
        void foo() {
            ABC::XYZ::A b;
            XYZ::A a;
            A c;

           a.foo();
           b.foo();
           c.foo();
        }
    }
}

Extensions to the library, e.g. added or changed LanguageFrontends or Passes

None

Changes to the configuration

None

[oxisto]

I am beginning to hate C++. Why the heck is XYZ::A inside the name space ABC::XYZ pointing to ABC::XYZ::A...

[oxisto]

@peckto this might be solved with #1502