[Qt-creator] Incorrect error diagnostics in C++ editor

[Bradley Smith]

The following code incorrectly displays an error diagnostic (colored underline)
at the class test::Tmp declaration. I'm using a recent pull from the git master
branch.

namespace test {
    class Tmp;
    class Base;
}

class test::Base {
};

class test::Tmp : Base {
public:
    Tmp();
};


Can someone fix this, or point me to where in the code to look at fixing it?

Also, can the error diagnostics be turned off? I looked for an option to turn
them off but didn't see one.

Thanks,
  Bradley