From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17250 invoked by alias); 12 Aug 2014 02:14:51 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 14680 invoked by uid 48); 12 Aug 2014 02:14:38 -0000 From: "thopre01 at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/62103] New: Incorrect folding of bitfield in a union on big endian targets Date: Tue, 12 Aug 2014 02:14:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 4.8.3 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: thopre01 at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-08/txt/msg00719.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62103 Bug ID: 62103 Summary: Incorrect folding of bitfield in a union on big endian targets Product: gcc Version: 4.8.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: thopre01 at gcc dot gnu.org Folding of bitfield in a union is incorrect on big endian targets. Consider the testcase given in attachment, u.b would be folded to 0x45678 instead of 0x12345.