From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 32F663858D1E; Fri, 10 Mar 2023 21:21:24 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 32F663858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1678483284; bh=8CeQAHl2CBV89hcj38AxAgbwNqd4CAosCMLQlRdrcPA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=aZvP/Mvgk0ekbCGx1KcCmqAhl/955CvEb20IzwhKhuCtRPY5UY2jv6u5LS0hunmon CbWwIoDBrri1xZXHjjOOHOxuev2NA3wilFPrhw70YvOid8N3oV4byG/li3hs7mcusJ +lke0jTmeHhKq9Ov8SKbJZU6N5CuCPgfyFwWZx8E= From: "anlauf at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/106945] [10/11/12/13 Regression] ICE: 'verify_gimple' failed Date: Fri, 10 Mar 2023 21:21:24 +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: 13.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: anlauf at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P4 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 10.5 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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=3D106945 anlauf at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |anlauf at gcc dot gnu.org --- Comment #4 from anlauf at gcc dot gnu.org --- As there is no ICE with -fcheck=3Dbounds -fwrapv but with -fcheck=3Dbounds = -ftrapv, there might be a wrapping issue with the bounds checking code. Difference of the dump-trees: --- pr106945-z1.f90.005t.original.wrapv 2023-03-10 22:15:44.992525716 +0100 +++ pr106945-z1.f90.005t.original.trapv 2023-03-10 22:15:24.892582362 +0100 @@ -268,7 +268,7 @@ D.4395 =3D (unsigned long) src->a._vptr->_size; D.4396 =3D (unsigned long) src->a._len; D.4397 =3D D.4396 !=3D 0 ? D.4395 * D.4396 : D.4395; - if (src->a._data.dim[0].ubound !=3D src->a._data.dim[0].lbound) + if ((src->a._data.dim[0].ubound - src->a._data.dim[0].lbound) = + 1 !=3D 1) { _gfortran_runtime_error_at (&"At line 9 of file pr106945-z1.f90"[1]{lb: 1 sz: 1}, &"Array bound mismatch for dimension 1 of array \'<>\' (%ld/%ld)"[1]{lb: 1 sz: 1}, 1, MAX_EXPR <(src->a._data.dim[0].ubound - src->a._data.dim[0].lbound) + 1, 0>); } I am having difficulties to understand the code generated for -ftrapv.=