From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32767 invoked by alias); 11 Apr 2015 01:49:06 -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 30650 invoked by uid 48); 11 Apr 2015 01:49:01 -0000 From: "howarth.at.gcc at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug bootstrap/65733] gcc 4.9.2 suffers bootstrap comparison failures with clang 3.5.1 and later. Date: Sat, 11 Apr 2015 01:49:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: bootstrap X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: howarth.at.gcc at gmail dot com 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: Message-ID: In-Reply-To: References: 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: 2015-04/txt/msg00930.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65733 --- Comment #7 from Jack Howarth --- Using... ld -S -r -no_uuid conftest.o.g -o conftest.o.g.stripped ld -S -r -no_uuid conftest.o.g0 -o conftest.o.g0.stripped dwarfdump --eh-frame conftest.o.g.stripped > conftest.o.g.stripped.dwarfdump dwarfdump --eh-frame conftest.o.g0.stripped > conftest.o.g0.stripped.dwarfdump for conftest.c compiled with Xcode 6.2 Apple Clang 6.0 on x86_64-apple-darwin13, we get... % diff -u conftest.o.g.stripped.dwarfdump conftest.o.g0.stripped.dwarfdump --- conftest.o.g.stripped.dwarfdump 2015-04-10 21:43:15.000000000 -0400 +++ conftest.o.g0.stripped.dwarfdump 2015-04-10 21:43:04.000000000 -0400 @@ -1,5 +1,5 @@ ---------------------------------------------------------------------- - File: conftest.o.g.stripped (x86_64) + File: conftest.o.g0.stripped (x86_64) ---------------------------------------------------------------------- Exception handling frame information for section __eh_frame but for contest.c compiled with llvm.org 3.6.0's clang on x86_64-apple-darwin13, we get... % diff -u conftest.o.g.stripped.dwarfdump conftest.o.g0.stripped.dwarfdump --- conftest.o.g.stripped.dwarfdump 2015-04-10 21:42:02.000000000 -0400 +++ conftest.o.g0.stripped.dwarfdump 2015-04-10 21:41:52.000000000 -0400 @@ -1,12 +1,12 @@ ---------------------------------------------------------------------- - File: conftest.o.g.stripped (x86_64) + File: conftest.o.g0.stripped (x86_64) ---------------------------------------------------------------------- Exception handling frame information for section __eh_frame 0x00000000: CIE length: 0x00000014 CIE_id: 0xffffffff - version: 0x01 + version: 0x03 augmentation: "zR" code_align: 1 data_align: -8