From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2A11A386F5E8; Mon, 11 Apr 2022 14:25:45 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2A11A386F5E8 From: "hewillk at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/105221] New: gcc rejects true ? [](auto) noexcept {} : [](int) {} Date: Mon, 11 Apr 2022 14:25:44 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: hewillk at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Apr 2022 14:25:45 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105221 Bug ID: 105221 Summary: gcc rejects true ? [](auto) noexcept {} : [](int) {} 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: --- int main() { true ? [](auto) noexcept {} : [](int) {}; } GCC-trunk only accepts the above code in C++14 but rejects it in C++17/20. https://godbolt.org/z/7r4dKbo73 But it seems like it should be well-formed, you can see the explanation in = SO: https://stackoverflow.com/questions/71826315/ternary-operator-applied-to-di= fferent-lambdas-produces-inconsistent-results=