[Bug c++/70693] valgrind error in get_visual_column

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70693

--- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
Reduced code seems to be

              class a {
                     public:    typedef char b;
                     };
                     namespace {
                       class c {
                      enum  {
    }
     d;
             bool e(a::b );  
                    };
                       bool c::e(a::b ) {
                      switch( d ) {
                        if( '>' ) ;
                        break;
                   }
                    }
                     }