[Bug c++/69778] New: Bogus "qualifiers cannot be applied" error with redundant (but legal) 'typename'

[rs2740 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69778

            Bug ID: 69778
           Summary: Bogus "qualifiers cannot be applied" error with
                    redundant (but legal) 'typename'
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rs2740 at gmail dot com
  Target Milestone: ---

Modified repro from http://stackoverflow.com/q/35352168/2756719:

struct A {
    typedef int& reference;
};

void f(const A::reference);          // OK
void g(const typename A::reference); // error: 'const' qualifiers cannot be 
                                     // applied to 'A::reference {aka int&}'