From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 13A2A3858C5F; Tue, 14 Mar 2023 14:24:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 13A2A3858C5F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1678803840; bh=Tc8CQMVQLtW5XXofo7qWBvRmS12cm4OzrnxCE8zovXY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=xA30RzIp3QSNjcGPz2WjBhZv1RSFUfyWyj9KgvD7CKWNLHj9Fgv2++xGDjWRjWDqX hqx+6GcmatLbSQ3IPNQl8Z4guciry9erEhcXRYDj27pWC7pXjQcSr4tFaYZD8OD4tT G0AvZq/1wRDHBje31NovaNMFbAf3UBss++xSwAj4= From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/62196] running time segment fault with valarray Date: Tue, 14 Mar 2023 14:23:59 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 4.9.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: redi 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: 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=3D62196 --- Comment #4 from Jonathan Wakely --- I've added some additional precondition checks to . If you compile the original testcase with -D_GLIBCXX_ASSERTIONS it will abort at runtime n= ow: $ ./a.out abcdefghijklmnopqrstuvwxyz /home/jwakely/gcc/13/include/c++/13.0.1/bits/mask_array.h:171: void std::mask_array<_Tp>::operator=3D(const std::valarray<_Tp>&) const [with _T= p =3D char]: Assertion '__v.size() =3D=3D _M_sz' failed. Aborted (core dumped)=