From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15289 invoked by alias); 16 Aug 2004 10:47:48 -0000 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 Received: (qmail 15228 invoked by uid 48); 16 Aug 2004 10:47:46 -0000 Date: Mon, 16 Aug 2004 10:47:00 -0000 Message-ID: <20040816104746.15227.qmail@sourceware.org> From: "giovannibajo at libero dot it" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20040706091123.16381.zhangjie@magima.com.cn> References: <20040706091123.16381.zhangjie@magima.com.cn> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug c++/16381] [3.3/3.4/3.5 Regression] Structure layout bug X-Bugzilla-Reason: CC X-SW-Source: 2004-08/txt/msg01522.txt.bz2 List-Id: ------- Additional Comments From giovannibajo at libero dot it 2004-08-16 10:47 ------- 3.4.0 gives this: __m128 size 16, align 16 Quad size 16, align 16 Base1 32 Derived1 32 Offset 20 Base2 24 Derived2 24 Offset 20 3.5.0 20040626 gives this: __m128 size 16, align 16 Quad size 16, align 16 Base1 32 Derived1 32 Offset 20 Base2 32 Derived2 48 Offset 32 Jie's expected result (from a mail of him) is: __m128 size 16, align 16 Quad size 16, align 4 Base1 20 Derived1 24 Offset 20 Base2 32 Derived2 48 Offset 32 Given the importance of this, and the inconsistencies between 3.3/3.4/3.5, I'll confirm this bug as a regression. ABI gurus can revisit this, and check which version is correct (if any), and what needs fixing. -- What |Removed |Added ---------------------------------------------------------------------------- CC| |giovannibajo at libero dot | |it Severity|normal |critical Status|UNCONFIRMED |NEW Ever Confirmed| |1 Keywords| |ABI, wrong-code Known to fail| |3.3.4 3.4.0 3.5.0 Last reconfirmed|0000-00-00 00:00:00 |2004-08-16 10:47:41 date| | Summary|Structure layout bug |[3.3/3.4/3.5 Regression] | |Structure layout bug Target Milestone|--- |3.4.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16381