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From: "jfrech.bugzilla at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/97430] New: internal compiler error: in verify_ctor_sanity, 
 at cp/constexpr.c:3884
Date: Wed, 14 Oct 2020 23:43:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97430

            Bug ID: 97430
           Summary: internal compiler error: in verify_ctor_sanity, at
                    cp/constexpr.c:3884
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jfrech.bugzilla at gmail dot com
  Target Milestone: ---

Possible duplicate of Bug 96241.

The following one-line source file triggers an ICE with `-std=3Dc++17`:

int main(){[](){enum E{F};struct{E e{F};}p[1]{};return p->e;};}

% g++ -std=3Dc++17 ice.cpp
ice.cpp: In static member function =E2=80=98static constexpr main()::<lambd=
a()>::E
main()::<lambda()>::_FUN()=E2=80=99:
ice.cpp:1:61:   in =E2=80=98constexpr=E2=80=99 expansion of =E2=80=980->mai=
n()::<lambda()>()=E2=80=99
ice.cpp:1:61: internal compiler error: in verify_ctor_sanity, at
cp/constexpr.c:3884
    1 | int main(){[](){enum E{F};struct{E e{F};}p[1]{};return p->e;};}
      |                                                             ^
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