From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 446193858407; Thu, 3 Mar 2022 14:20:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 446193858407 From: "dmalcolm at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug analyzer/104680] identical inner condition not detected Date: Thu, 03 Mar 2022 14:20:11 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: analyzer X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: diagnostic X-Bugzilla-Severity: enhancement X-Bugzilla-Who: dmalcolm at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: dmalcolm at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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, 03 Mar 2022 14:20:11 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104680 --- Comment #5 from David Malcolm --- > trunk.git/libffi/src/m32r/ffi.c:66:15: warning: Identical inner 'if' cond= ition is always true. [identicalInnerCondition] In ffi_prep_args: 56 =E2=94=82 for (i =3D ecif->cif->nargs, p_arg =3D ecif->cif->arg_ty= pes; 57 =E2=94=82 (i !=3D 0) && (avn !=3D 0); 58 =E2=94=82 i--, p_arg++) 59 =E2=94=82 { 60 =E2=94=82 size_t z; 61 =E2=94=82=20 62 =E2=94=82 /* Align if necessary. */ 63 =E2=94=82 if (((*p_arg)->alignment - 1) & (unsigned) argp) 64 =E2=94=82 argp =3D (char *) FFI_ALIGN (argp, (*p_arg)->alignment= ); 65 =E2=94=82=20 66 =E2=94=82 if (avn !=3D 0)=20 67 =E2=94=82 { avn !=3D 0 checked at both line 66 and in the loop guard at line 57.=