[Bug c++/87616] New: Compiler segfaults on dependent templated friend

[mickg at mickg dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87616

            Bug ID: 87616
           Summary: Compiler segfaults on dependent templated friend
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mickg at mickg dot net
  Target Milestone: ---

Sample that does not compile : 


struct foo{};
template <class A, class B> struct friender {
    using cls=foo;
};

class bar {
    template <class X, class Y>
    friend class friender<X,Y>::cls;
    int hidden;
};


int main() {
    bar b;
}