From owner-freebsd-alpha@FreeBSD.ORG Thu Sep 23 07:30:28 2004 Return-Path: Delivered-To: freebsd-alpha@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6043316A4CE for ; Thu, 23 Sep 2004 07:30:28 +0000 (GMT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2FC0143D1F for ; Thu, 23 Sep 2004 07:30:28 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) i8N7US64033345 for ; Thu, 23 Sep 2004 07:30:28 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.11/8.12.11/Submit) id i8N7USGv033340; Thu, 23 Sep 2004 07:30:28 GMT (envelope-from gnats) Resent-Date: Thu, 23 Sep 2004 07:30:28 GMT Resent-Message-Id: <200409230730.i8N7USGv033340@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-alpha@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Patrick Pelissier Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8E58516A4CF for ; Thu, 23 Sep 2004 07:26:34 +0000 (GMT) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6A0A943D1F for ; Thu, 23 Sep 2004 07:26:34 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.12.11/8.12.11) with ESMTP id i8N7QXAE099743 for ; Thu, 23 Sep 2004 07:26:33 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.12.11/8.12.11/Submit) id i8N7QXTM099742; Thu, 23 Sep 2004 07:26:33 GMT (envelope-from nobody) Message-Id: <200409230726.i8N7QXTM099742@www.freebsd.org> Date: Thu, 23 Sep 2004 07:26:33 GMT From: Patrick Pelissier To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-2.3 Subject: alpha/72024: LONG_MIN / 1 sends a "Floating exception" X-BeenThere: freebsd-alpha@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the Alpha List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Sep 2004 07:30:28 -0000 >Number: 72024 >Category: alpha >Synopsis: LONG_MIN / 1 sends a "Floating exception" >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-alpha >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Sep 23 07:30:27 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Patrick Pelissier >Release: 5.2.1 >Organization: >Environment: spe149.testdrive.hp.com> uname -a FreeBSD spe149.testdrive.hp.com 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #0: Tue Feb 24 07:42:14 GMT 2004 root@mithlond.btc.adaptec.com:/usr/obj/usr/src/sys/GENERIC alpha >Description: The following program: #include int f(long a, long b); int main() { return f(LONG_MIN, 1); } int f(long a, long b) { return a / b; } produces a "Floating exception (core dumped)" on alpha-unknown-freebsd5.2.1 (spe149.testdrive.hp.com) with: gcc version 3.4.2 and gcc version 3.3.3 [FreeBSD] 20031106. The test program was compiled without any flags: spe149.testdrive.hp.com> /tmp/make/bin/gcc test3.c spe149.testdrive.hp.com> ./a.out Floating exception (core dumped) spe149.testdrive.hp.com> /tmp/make/bin/gcc -v Reading specs from /tmp/make/lib/gcc/alpha-unknown-freebsd5.2.1/3.4.2/specs Configured with: ./configure --prefix=/tmp/gcc : (reconfigured) ./configure --prefix=/tmp/gcc : (reconfigured) ./configure --prefix=/tmp/make --enable-languages=c Thread model: posix gcc version 3.4.2 The problem seems to be in the internal function "__divq" which produces the exception. (See also http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17613 ) >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: