From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 544EE3858D33; Tue, 27 Jun 2023 17:13:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 544EE3858D33 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687885980; bh=y7Y07YjWcv+AwjCrVlMN+3tzTVESQm5zvhT6J7LhG+w=; h=From:To:Subject:Date:In-Reply-To:References:From; b=XHrBsPV62t4+Z7QhGqWR2E5GFnUldl/lzElttDFXZnRdStZ5un17A5snjPeQDZ5Y+ +adlTWYWh6EtP3C9D7FXnyT8FazbwDjwnDAU/NGY9u8+gnvGP9aAq/pCgkbxS9l6YQ L7obU+7G0q3Il/DgjdG7viLlPn1s8EkE179W6Jdo= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/110437] SIGILL when return missing in a C++ function with a condition Date: Tue, 27 Jun 2023 17:13:00 +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: 13.1.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org 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: bug_status resolution 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110437 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski --- >reproduce.cpp:10:1: warning: no return statement in function returning non= -void [-Wreturn-type] Yes it is undefined code (at runtime) if the code falls through from a func= tion which has a non-void return type for C++. The rules for C is slightly different, it is only undefined if the return value from the function is tr= ied to be used.=