X-Spam-Check-By: sourceware.org Message-ID: <4590B976.2070504@cygwin.com> Date: Tue, 26 Dec 2006 00:56:06 -0500 From: "Larry Hall (Cygwin)" Reply-To: cygwin AT cygwin DOT com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.8) Gecko/20061108 Fedora/1.5.0.8-1.fc4.remi Thunderbird/1.5.0.8 Mnenhy/0.7.4.0 MIME-Version: 1.0 To: cygwin AT cygwin DOT com Subject: Re: how to debug with the crash especially with the corrupt stack in multi-thread environment using gdb. References: <89c3ea2b0612242133o6dd57ef5x5a536490e0fd009f AT mail DOT gmail DOT com> <458FDA73 DOT 2000300 AT cygwin DOT com> <89c3ea2b0612250817i3c240653xe10e2473e908fbaa AT mail DOT gmail DOT com> In-Reply-To: <89c3ea2b0612250817i3c240653xe10e2473e908fbaa@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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 . Reformatted. andy wang wrote: >> Download a snapshot with symbols so you get better stack info: >> >> >> >> Either that, or build cygwin yourself with debugging info so you can >> do the same and play with the source. >> > Thanks .Larry! > > If the bug is not in the cygwin1.dll but an application and with stack > corrupted, how can I using the low level debug technics to find the > reason. The most common way is to put a breakpoint in the code before you get the stack corruption and step along until you see the problem. This isn't really Cygwin-specific advise though. You may want to read up on some of the capabilities of 'gdb' to gain more insights into it's capabilities. That should help you understand the things it can do to help you find problems. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 216 Dalton Rd. (508) 893-9889 - FAX Holliston, MA 01746 _____________________________________________________________________ A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting annoying in email? -- 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/