From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D74793857030; Thu, 11 Aug 2022 14:29:39 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D74793857030 From: "cvs-commit at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/102633] [11/12/13 Regression] warning for self-initialization despite -Wno-init-self Date: Thu, 11 Aug 2022 14:29:39 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: diagnostic X-Bugzilla-Severity: normal X-Bugzilla-Who: cvs-commit at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: mpolacek at gcc dot gnu.org X-Bugzilla-Target-Milestone: 11.4 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: Thu, 11 Aug 2022 14:29:40 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102633 --- Comment #8 from CVS Commits --- The trunk branch has been updated by Marek Polacek : https://gcc.gnu.org/g:04ce2400b35225302e0d6883bb0817378180f5d7 commit r13-2022-g04ce2400b35225302e0d6883bb0817378180f5d7 Author: Marek Polacek Date: Tue Jul 26 13:55:58 2022 -0400 c-family: Honor -Wno-init-self for cv-qual vars [PR102633] Since r11-5188-g32934a4f45a721, we drop qualifiers during l-to-r conversion by creating a NOP_EXPR. For e.g. const int i =3D i; that means that the DECL_INITIAL is '(int) i' and not 'i' anymore. Consequently, we don't suppress_warning here: 711 case DECL_EXPR: 715 if (VAR_P (DECL_EXPR_DECL (*expr_p)) 716 && !DECL_EXTERNAL (DECL_EXPR_DECL (*expr_p)) 717 && !TREE_STATIC (DECL_EXPR_DECL (*expr_p)) 718 && (DECL_INITIAL (DECL_EXPR_DECL (*expr_p)) =3D=3D DECL_E= XPR_DECL (*expr_p)) 719 && !warn_init_self) 720 suppress_warning (DECL_EXPR_DECL (*expr_p), OPT_Winit_self); because of the check on line 718 -- (int) i is not i. So -Wno-init-self doesn't disable the warning as it's supposed to. The following patch fixes it by moving the suppress_warning call from c_gimplify_expr to the front ends, at points where we haven't created the NOP_EXPR yet. PR middle-end/102633 gcc/c-family/ChangeLog: * c-gimplify.cc (c_gimplify_expr) : Don't call suppress_warning here. gcc/c/ChangeLog: * c-parser.cc (c_parser_initializer): Add new tree parameter. = Use it. Call suppress_warning. (c_parser_declaration_or_fndef): Pass d down to c_parser_initializer. (c_parser_omp_declare_reduction): Pass omp_priv down to c_parser_initializer. gcc/cp/ChangeLog: * decl.cc (cp_finish_decl): Call suppress_warning. gcc/testsuite/ChangeLog: * c-c++-common/Winit-self1.c: New test. * c-c++-common/Winit-self2.c: New test.=