From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 22A173858D32; Fri, 31 Mar 2023 22:54:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 22A173858D32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1680303266; bh=J/EWG6JBcJgdSNYBTodhwn+cwXVmWAQmB4qE9B5QlEk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=cXwXA2VmlADfeVYD9aPTU19G96adGRjPKDgWb88++KdBhQK+5rtQ/DmYBvvSiLX7W CxZb4GunsddtmPm2XCFsple48X1RL99Or0TKVuSE+hkHTERHm5edkm9pJPt0SQGY4a /H9qk6mCXRBd8AGYfVkq8s0Np6iTazyLSCS5RFFo= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/109364] Missing return statement in a non void function gives only a warning but produces a forced crash. Date: Fri, 31 Mar 2023 22:54:26 +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: 13.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: DUPLICATE 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109364 --- Comment #8 from Andrew Pinski --- That is because -funreachable-traps is also enabled at -O0. And disabled for -O1 and above except for -Og. That changes all places where you either __builtin_unreachable or places which gcc inserts that like this place, gcc will cause a trap.=