[Bug c++/109742] New: ICE on unexpanded NTTP pack

[420 at zerberste dot es via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109742

            Bug ID: 109742
           Summary: ICE on unexpanded NTTP pack
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: 420 at zerberste dot es
  Target Milestone: ---

The following erroneous code snippet triggers an ICE on all versions since 8.1
(including trunk):

template <typename...>
void ice(){
    return ([]<auto... g>(){
            return g;
        }() || ...);
}

template void ice<>();


See https://godbolt.org/z/1jPbe3h9G