DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:to:from:subject:message-id:date:mime-version
	:content-type:content-transfer-encoding; q=dns; s=default; b=i08
	HlEsjAQjW/AHF1p2ldqMDoVzpYMnvX6ko4b2TvZaFYc1xrZeNj8G6C+eUcwGI9cg
	mrrZIc2jdtLASQDx+wEL+eZIw/xEP+GSaJrN+AYAK1yRHfy4qgwQd5T+VEpRVbA7
	7P7dMROYHCv+kJcv/a8KBoKecINVhYtemRd5Eg5U=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
From: Ilya Razenshteyn <ilyaraz AT mit DOT edu>
Subject: short C code that uses AVX and fails under Cygwin
Message-ID: <56980313.5030205@mit.edu>
Date: Thu, 14 Jan 2016 23:20:35 +0300
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit

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;
}


--
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