From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 806E3386F41E; Tue, 13 Oct 2020 03:36:21 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 806E3386F41E From: "asolokha at gmx dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/97396] New: [11 Regression] ICE: Segmentation fault (in bounds_of_var_in_loop) Date: Tue, 13 Oct 2020 03:36:21 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: asolokha at gmx dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: 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_id short_desc product version bug_status keywords bug_severity priority component assigned_to reporter target_milestone Message-ID: 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: Tue, 13 Oct 2020 03:36:21 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97396 Bug ID: 97396 Summary: [11 Regression] ICE: Segmentation fault (in bounds_of_var_in_loop) Product: gcc Version: 11.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: asolokha at gmx dot com Target Milestone: --- gcc-11.0.0-alpha20201011 snapshot (g:4eaf96c56c1c97b11af42a4caaa12b37870308= d7) ICEs when compiling the following testcase w/ -m32 -O1 -ftree-vrp: unsigned int po (char *os, unsigned int al) { for (;;) { int qx =3D 0; while (al < 1) { char *cw; cw =3D os + qx; if (cw) return al + qx; qx +=3D sizeof *cw; } } } % gcc-11.0.0 -m32 -O1 -ftree-vrp -c c5dvzahu.c during GIMPLE pass: evrp c5dvzahu.c: In function 'po': c5dvzahu.c:19:1: internal compiler error: Segmentation fault 19 | } | ^ 0xdb3b3f crash_signal =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/toplev.c:330 0x10e73a3 bounds_of_var_in_loop(tree_node**, tree_node**, range_query*, loo= p*, gimple*, tree_node*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/vr-values.c:1836 0x18aaa19 gimple_ranger::range_of_ssa_name_with_loop_info(irange&, tree_nod= e*, loop*, gphi*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-range.cc:1138 0x18aad73 gimple_ranger::range_of_phi(irange&, gphi*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-range.cc:495 0x18ab0fd gimple_ranger::calc_stmt(irange&, gimple*, tree_node*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-range.cc:371 0x18ab30f gimple_ranger::range_of_stmt(irange&, gimple*, tree_node*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-range.cc:986 0x18a7918 gimple_ranger::range_of_expr(irange&, tree_node*, gimple*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-range.cc:877 0x109d6fd range_query::value_of_expr(tree_node*, gimple*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/value-query.cc:85 0x1740211 hybrid_folder::value_of_expr(tree_node*, gimple*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-ssa-evrp.c:235 0xf529a6 substitute_and_fold_dom_walker::before_dom_children(basic_block_de= f*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/tree-ssa-propagate.c:1072 0x1715ca7 dom_walker::walk(basic_block_def*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/domwalk.c:309 0xf51f77 substitute_and_fold_engine::substitute_and_fold(basic_block_def*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/tree-ssa-propagate.c:1283 0x173fe8e execute_early_vrp =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20201011/work/gcc-11-20201011/gc= c/gimple-ssa-evrp.c:340=