[Bug c++/83978] New: [8 Regression] ICE in determine_visibility

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83978

            Bug ID: 83978
           Summary: [8 Regression] ICE in determine_visibility
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

template <int N>
struct A { A () { auto a = [] { enum E {}; }; } };
A<0> *p = new A<0> ();

ICEs starting with r251433.  Seems to break many Qt/KDE packages.