From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A541B3858D28; Mon, 18 Jul 2022 14:43:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A541B3858D28 From: "hjl.tools at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/106331] [12/13 Regression] Whole array assignment of empty string segfaults with -Og since r12-2633-ge5e164effa30fd2b Date: Mon, 18 Jul 2022 14:43:40 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Version: 12.1.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: hjl.tools at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.2 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 Jul 2022 14:43:40 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106331 --- Comment #6 from H.J. Lu --- This is a latent bug. GCC 11 RTL expander generates: (insn 21 20 22 (set (mem/c:TI (reg:DI 92 [ D.3947 ]) [0 MEM [(= void=20 *)&a]+0 S16 A128]) (const_wide_int 0x20202020202020202020202020202020)) "x.f90":3:6 -1 (nil)) [(void *)&a]+0 S16 A128] doesn't look right.=