From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 05D6A3858033; Mon, 18 Oct 2021 16:23:43 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 05D6A3858033 From: "rudick at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/102804] template matching fails w/ false ambiguity on ternary expressions with enums class defined with unsigned typdef Date: Mon, 18 Oct 2021 16:23:42 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 11.2.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rudick at gmail dot com X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: INVALID 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: Message-ID: In-Reply-To: References: 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, 18 Oct 2021 16:23:43 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102804 --- Comment #5 from Todd Rudick --- Richard, is there a way to represent the part of this that is a bug?=20 Presumably accepting the construct but having it break template specializat= ion with an error that can be arbitrarily disconnected from the definition is n= ot a desired behavior. In the production code that I eventually isolated this fr= om, there is in fact no reference at all to the header that contained the enum. Also, it seems likely that the compiler state is bad at that point (?), as = the error message indicates an 'unsigned int' ambiguity that doesn't actually exist.=