From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 3352D3858039; Mon, 4 Oct 2021 07:30:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3352D3858039 From: "marxin at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/102586] New: [12 Regression] ICE in clear_padding_type, at gimple-fold.c:4798 since r12-3433-ga25e0b5e6ac8a77a Date: Mon, 04 Oct 2021 07:30:25 +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: 12.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: marxin at gcc dot gnu.org 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 cc 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: Mon, 04 Oct 2021 07:30:26 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102586 Bug ID: 102586 Summary: [12 Regression] ICE in clear_padding_type, at gimple-fold.c:4798 since r12-3433-ga25e0b5e6ac8a77a Product: gcc Version: 12.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: qing.zhao at oracle dot com Target Milestone: --- The following fails: $ cat vbase.cc struct C0 {}; struct C1 {}; struct C2 : C1, virtual C0 {}; struct C4 : virtual C2, C1 {}; struct C5 : virtual C4, C1 {}; struct C9 : C5 {}; int main() { C9 c9; } $ g++ vbase.cc -ftrivial-auto-var-init=3Dpattern -c vbase.cc:4:8: warning: direct base =E2=80=98C1=E2=80=99 inaccessible in =E2= =80=98C4=E2=80=99 due to ambiguity [-Winaccessible-base] 4 | struct C4 : virtual C2, C1 {}; | ^~ vbase.cc:5:8: warning: direct base =E2=80=98C1=E2=80=99 inaccessible in =E2= =80=98C5=E2=80=99 due to ambiguity [-Winaccessible-base] 5 | struct C5 : virtual C4, C1 {}; | ^~ during GIMPLE pass: lower vbase.cc: In function =E2=80=98int main()=E2=80=99: vbase.cc:8:5: internal compiler error: in clear_padding_type, at gimple-fold.c:4803 8 | int main() { C9 c9; } | ^~~~ 0x7e794a clear_padding_type /home/marxin/Programming/gcc/gcc/gimple-fold.c:4803 0xee52e4 clear_padding_type /home/marxin/Programming/gcc/gcc/gimple-fold.c:4798 0xee6063 gimple_fold_builtin_clear_padding /home/marxin/Programming/gcc/gcc/gimple-fold.c:5005 0xef6178 gimple_fold_builtin /home/marxin/Programming/gcc/gcc/gimple-fold.c:5179 0xef6178 gimple_fold_call /home/marxin/Programming/gcc/gcc/gimple-fold.c:5587 0xef752b fold_stmt_1 /home/marxin/Programming/gcc/gcc/gimple-fold.c:6289 0x1e69a8f lower_stmt /home/marxin/Programming/gcc/gcc/gimple-low.c:390 0x1e69bb2 lower_sequence /home/marxin/Programming/gcc/gcc/gimple-low.c:217 0x1e69bb2 lower_stmt /home/marxin/Programming/gcc/gcc/gimple-low.c:286 0x1e693ca lower_sequence /home/marxin/Programming/gcc/gcc/gimple-low.c:217 0x1e693ca lower_gimple_bind /home/marxin/Programming/gcc/gcc/gimple-low.c:475 0x1e693ca lower_sequence /home/marxin/Programming/gcc/gcc/gimple-low.c:217 0x1e693ca lower_gimple_bind /home/marxin/Programming/gcc/gcc/gimple-low.c:475 0x1e6a6cb lower_function_body /home/marxin/Programming/gcc/gcc/gimple-low.c:110 0x1e6a6cb execute /home/marxin/Programming/gcc/gcc/gimple-low.c:195 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions.=