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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/99505] ICE Segmentation fault when decltype lambda in
 parameter list
Date: Wed, 10 Mar 2021 08:18:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99505

--- Comment #2 from =E5=BA=B7=E6=A1=93=E7=91=8B <hewillk at gmail dot com> =
---
Yep, wandbox (https://wandbox.org/permlink/OUJpCz6dFrlA1vod) compiles fine.=
=20

This invalid code maybe can reproduce that locally.

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

(wandbox: https://wandbox.org/permlink/re9O9DXwoaYmNInd)
(godbolt: https://godbolt.org/z/e4e7or)=