From nobody Wed Dec 21 02:04:22 2022 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4NcGw71X6qz1GFSG for ; Wed, 21 Dec 2022 02:04:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4NcGw66cGrz42Rm for ; Wed, 21 Dec 2022 02:04:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1671588262; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; 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Wed, 21 Dec 2022 02:04:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 2BL24MAs090322 for ; Wed, 21 Dec 2022 02:04:22 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 2BL24M5L090321 for bugs@FreeBSD.org; Wed, 21 Dec 2022 02:04:22 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 268497] clang15 math.h isfinite() generates unreachable-code-generic-assoc warnings Date: Wed, 21 Dec 2022 02:04:22 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: misc X-Bugzilla-Version: 13.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: nicholas.h.briggs@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: 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 List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D268497 Bug ID: 268497 Summary: clang15 math.h isfinite() generates unreachable-code-generic-assoc warnings Product: Base System Version: 13.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: misc Assignee: bugs@FreeBSD.org Reporter: nicholas.h.briggs@gmail.com This appears to be a variant of #254714 coming back to life with clang15 -- Compiling int foo(void) { return isfinite(1.0f); } with clang15 -c isfinitetest.c -o isfinitetest.o generates % clang15 -c isfinitetest.c -o isfinitetest.o=20 isfinitetest.c:2:24: warning: due to lvalue conversion of the controlling expression, association of type 'volatile float' will never be selected bec= ause it is qualified [-Wunreachable-code-generic-assoc] int foo(void) { return isfinite(1.0f); } ^ /usr/include/math.h:110:21: note: expanded from macro 'isfinite' #define isfinite(x) __fp_type_select(x, __isfinitef, __isfinite, __isfinite= l) ^ /usr/include/math.h:85:14: note: expanded from macro '__fp_type_select' volatile float: f(x), \ ^ (and so on for 8 more errors with all combinations of (volatile, const) x (float, double)) This was not an issue with clang 13, but clang 15 introduced -Wunreachable-code-generic-assoc and enabled it by default. --=20 You are receiving this mail because: You are the assignee for the bug.=