From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dancol.org (dancol.org [IPv6:2600:3c01:e000:3d8::1]) by sourceware.org (Postfix) with ESMTPS id B1ACD3856DE4 for ; Tue, 31 May 2022 16:47:18 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org B1ACD3856DE4 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=dancol.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=dancol.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=dancol.org; s=x; h=Content-Type:MIME-Version:Subject:References:In-Reply-To:Message-ID: Date:CC:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Rj6Lu6VR2n3+wZHS65vM/D9N1iq32U9kYo1EANyFinM=; b=BZRrIQLccmvQdh8qrAHeujkoQ2 V3oZiTXx9AJe+o2TgDP4gle53hMCACl66ZP+o3ZGyqvAZ4A6eYPOu7OxCNUUhf4NEOZV0yaKEoTFi Pf1do8XXY8jDeGHgux0qLX99/cglaWKVoTymeXj3NpeLo2M57Utzwc+Q01+yFPr+D3kH0ryCL2dRl xxZ4CBKcrPdWDmmhyDq9dYkHFInXKMLagIAE6wW7NSFLC4g/szvswirZHsNA0aQfH3rvnF40o8OdE Td1ZK/p4ex8raAUN5p3GWM8ignqWzZAfHc+pQ+npvrN77TJw3DSp3EcU93VfINNsU1PyghDiw5ZVi N4+lOf3w==; Received: from 96.sub-174-211-237.myvzw.com ([174.211.237.96]:13839 helo=[100.112.31.188]) by dancol.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1nw51X-0007eY-5W; Tue, 31 May 2022 09:47:15 -0700 From: To: DJ Delorie , Anthony Green , "DJ Delorie via Libffi-discuss" CC: Date: Tue, 31 May 2022 12:47:13 -0400 Message-ID: <1811b03a668.2829.cc5b3318d7e9908e2c46732289705cb0@dancol.org> In-Reply-To: References: User-Agent: AquaMail/1.35.0 (build: 103500130) Subject: Re: Change in libffi behaviour -- large struct args MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, HTML_MESSAGE, SPF_HELO_PASS, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org Content-Type: text/plain; format=flowed; charset="us-ascii" Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: libffi-discuss@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libffi-discuss mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 May 2022 16:47:20 -0000 On May 31, 2022 11:53:56 DJ Delorie via Libffi-discuss wrote: > While this is technically an ABI change, if the "old" ABI never worked, > I can't see how this would break anything by changing. > > I will add that passing structs is likely more complex than you think ;-) The problem is that whether the old API was broken or not, changing it can break working code. What do the libffi people think about using symbol versioning?