[Bug c++/66647] New: [5/6 regression] ICE: in instantiate_class_template_1, at cp/pt.c:9254

[allan at archlinux dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66647

            Bug ID: 66647
           Summary: [5/6 regression] ICE: in instantiate_class_template_1,
                    at cp/pt.c:9254
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: allan at archlinux dot org
  Target Milestone: ---

Created attachment 35838
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35838&action=edit
testcase

An ICE seen in gcc-5-20150519.  Works in 4.9.2.

A reducded-ish testcase attached.

g++ -std=c++11 testcase.ii