X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Date: Sun, 10 Feb 2008 10:14:30 -0800 From: Jerry DeLisle Subject: Re: Memory leak problem reported with gfortran In-reply-to: <20080206092154.GP5866@calimero.vinschen.de> To: cygwin@cygwin.com Message-id: <47AF3F06.30302@verizon.net> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: <47A614EC.1010104@verizon.net> <20080204103512.GA5866@calimero.vinschen.de> <47A782C7.3060501@verizon.net> <20080204222455.GA3058@ednor.casa.cgf.cx> <20080205103104.GK5866@calimero.vinschen.de> <47A90C18.1070709@verizon.net> <20080206092154.GP5866@calimero.vinschen.de> User-Agent: Thunderbird 2.0.0.9 (X11/20071115) X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Corinna Vinschen wrote: > On Feb 5 17:23, Jerry DeLisle wrote: >> Corinna Vinschen wrote: >>> On Feb 4 17:24, Christopher Faylor wrote: >>>> On Mon, Feb 04, 2008 at 01:25:27PM -0800, Jerry DeLisle wrote: >>>>> The test also appears very clean on Linux. The gfortran library is >>>>> implemented in C. I need to examine some dumps from the compiler and I >>>>> will get back with you off list if I don't spot the problem. >>>> I am fairly certain that Corinna would want to keep any correspondence >>>> on-list. >>> Yup, that's right. >> OK, we have isolated the problem now. Confirming its in the libgfortran. >> The reason we did not see it on Linux is because we just did not run out of >> memory yet and when the test program completes, it does actually free what >> was allocated. We are failing to reuse an already allocated block so we >> were allocating a new one for every single WRITE to the string. >> >> Thanks for all your help. > > Thanks for letting us know. > > > Corinna > An interim patch to gcc 4.3 has been committed to svn. see gcc bugzilla pr35063 for details. It was a mutex lock issue. Not closing the handle after the lock was no longer needed. Jerry -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/