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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/102709] New: ICE: in build_function_type, at tree.c:7304
Date: Tue, 12 Oct 2021 15:42:10 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102709

            Bug ID: 102709
           Summary: ICE: in build_function_type, at tree.c:7304
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hewillk at gmail dot com
  Target Milestone: ---

12 Regression:

template<class... T>
struct S { S(T) {} };

int main() {
  S([]{});
}

https://godbolt.org/z/rM5Eo1rhh=