X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; q=dns; s=default; b=Ft6N8J8 eGMSFCk877GnTCZ/KzaHtFBqZXnwlSbcW/tq3wvUm/5gcwXfCyr5HGRZRzQ7W/pG 0igs2MzhXiEWQJ1rKZ9Qgx7JWzcyCEQPSQga9r4dzw5JgXCLMqSN2kU0Y20pFlzn 0dHxqJyQA+KJMUphhXAoT1xVJgCZCvfSWMbc= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; s=default; bh=Tw0xAjP7cx7lV AvMQYVAj1o+nrE=; b=pUQWjwC0+RgyVrcIusEqcBGsiR9skqJOzkUflaRHi4qp0 noZ1c40rF9NwewP7lAEblD9RA1rzA+rF1N7q1Z2d97y6ufSFRHSGK4mfcWTT7bF+ zgNOQvr+WNRuMsV9WFDb0/eheshr0y5QTkHynbwArt4Fxj4ZU5WbO/VSbN1LJ0= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=ilyarazmitedu, H*f:sk:5698031, razenshteyn, D*mit.edu X-HELO: mail-yk0-f181.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; bh=lcjocHpMhrDgOd0uBwqRrkOa4S70j8Cn88t3rFZanTQ=; b=mPG98N3mMEoocWSA/CSciNqd7Jz6hSbcRjVcudhsF7Koi0+MRTHLWG6aj7fvJd5gYR QQTNcYhUYxHwfISz/apkOn00AfWWw1ptlkqgd2wfj9rGTEmFVAs0vcOBf+MzPNiHM9Ze DvzE8j8hI7pM3meUgAqDtoV8dwjMcea0nFB9Pwde72Vrz/rr/qAGhkBAZLcQw61CjQZ0 ziLnNpBitx3xd6SwKUeF3d4qxLW/yOQoF9zF5sqXo5epq7QkMqll7JUe3hLjjv1ZlLMD piHJzn21WTwuuLb2/E3ppCYcvVqLDkgAxi2Taekpsd1yitj/oYNLnn93cC1cxvRmwNlc PcAQ== X-Gm-Message-State: ALoCoQky1a2f+LHNOuX1zccQmEW61m7i00xl91VRCy+BdkVnEbWjYRo7cYu8TOfsu52+UjP426dYjOq/rR9GT5B8XxQIba23aw== X-Received: by 10.129.146.72 with SMTP id j69mr4658545ywg.217.1452804626809; Thu, 14 Jan 2016 12:50:26 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <56980313.5030205@mit.edu> References: <56980313 DOT 5030205 AT mit DOT edu> From: Ismail Donmez Date: Thu, 14 Jan 2016 22:49:57 +0200 Message-ID: Subject: Re: short C code that uses AVX and fails under Cygwin To: cygwin AT cygwin DOT com Content-Type: text/plain; charset=UTF-8 X-IsSubscribed: yes Hi, On Thu, Jan 14, 2016 at 10:20 PM, Ilya Razenshteyn wrote: > Hi all, > > the below C code fails under Cygwin. More specifically, the environment is: > Windows 8.1, Cygwin 2.3.1, GCC 4.9.3, CPU 'Intel(R) Core(TM) i7-4510U CPU @ > 2.00GHz', compilation options are '-O0 -mavx'. Is it indeed a bug in Cygwin > or I don't understand something? > > Cheers, > Ilya > > #include "immintrin.h" > > __m256 routine(void) { > __m256 aux; > return aux; > } > > int main(void) { > void *buf = malloc(1); > __m256 res = routine(); > return 0; > } I believe this is due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412 , https://stackoverflow.com/questions/5983389/how-to-align-stack-at-32-byte-boundary-in-gcc has an ugly workaround which might work for you. Regards, ismail -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple