From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11904 invoked by alias); 23 Jan 2006 08:16:25 -0000 Received: (qmail 11877 invoked by uid 48); 23 Jan 2006 08:16:23 -0000 Date: Mon, 23 Jan 2006 08:16:00 -0000 Message-ID: <20060123081623.11876.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/25890] [4.2 regression] testsuite failure: gcc.c-torture/compile/20051228-1.c In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "bonzini at gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2006-01/txt/msg02326.txt.bz2 List-Id: ------- Comment #3 from bonzini at gnu dot org 2006-01-23 08:16 ------- The bug here is that expand_compound_operation uses an unsigned HOST_WIDE_INT for pos, while the argument to the "zero_extract" rtx's is a const_int, which is signed. A negative value for zero_extract's position operand is at best undefined, so it's probably easiest to make expand_compound_operation do nothing in this case. -- bonzini at gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |bonzini at gnu dot org |dot org | Status|NEW |ASSIGNED Last reconfirmed|2006-01-21 04:15:30 |2006-01-23 08:16:23 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25890