From owner-freebsd-bugs@freebsd.org Fri Dec 16 07:54:36 2016 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id F028EC82BA4 for ; Fri, 16 Dec 2016 07:54:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C684D14DE for ; Fri, 16 Dec 2016 07:54:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id uBG7saVk059905 for ; Fri, 16 Dec 2016 07:54:36 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 215333] head -r310046 for powerpc family: sys/powerpc/powerpc/intr_machdep.c's i->trig == -1 if-tests reported as always false by compiler Date: Fri, 16 Dec 2016 07:54:36 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: markmi@dsl-only.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Dec 2016 07:54:37 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215333 Bug ID: 215333 Summary: head -r310046 for powerpc family: sys/powerpc/powerpc/intr_machdep.c's i->trig =3D=3D -1 if-tests reported as always false by compiler Product: Base System Version: CURRENT Hardware: powerpc OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: markmi@dsl-only.net --- intr_machdep.o --- /usr/src/sys/powerpc/powerpc/intr_machdep.c:454:15: warning: comparison of constant -1 with expression of type 'enum intr_trigger' is always false [-Wtautological-constant-out-of-range-compare] if (i->trig =3D=3D -1) ~~~~~~~ ^ ~~ /usr/src/sys/powerpc/powerpc/intr_machdep.c:500:16: warning: comparison of constant -1 with expression of type 'enum intr_trigger' is always false [-Wtautological-constant-out-of-range-compare] if (i->trig =3D=3D -1) ~~~~~~~ ^ ~~ Justin Hibbits wrote about the note that I sent him that listed the above: This may or may not be a problem, depending on optimization settings. Can = you file a bug for this so it doesn't get lost? I also noted: There are other comparisons around with a constant result at compile time. But they tend to be in less central areas like zfs. Similarly for some other types of compiler reports. --=20 You are receiving this mail because: You are the assignee for the bug.=