Navigation between a mismatched method declaration and definition doesn't work with Clang code model

If you have a mismatch between the declaration and definition of a method, you cannot navigate between them when the Clang code model is active, however you (usually) can with the old code model.

For example, if you have this in a header file:

class Foo {
public:
  void foo(int bar);
};

and this in a cpp file:

void Foo::foo(int bar) const  // <-- declared const here, but not in header
{ ... }

then you cannot Ctrl+Click on Foo::foo to jump back to the declaration and fix it up when using the Clang code model. This is something that works - and is very useful - with the old code model.