From: Chuck Remes <cremes.devlist@...>
Date: 2010-09-28T04:14:49+09:00
Subject: Re: Segmentation Fault; more info?


On Sep 27, 2010, at 2:08 PM, Chuck Remes wrote:

> 
> On Sep 27, 2010, at 2:02 PM, Ralph Shnelvar wrote:
> 
>> Chuck,
>> 
>> 
>> 
>> Monday, September 27, 2010, 12:44:14 PM, you wrote:
>> 
>> 
>> CR> On Sep 27, 2010, at 1:04 PM, Ralph Shnelvar wrote:
>> 
>>>> Luis,
>> 
>> 
>> 
>>>> Monday, September 27, 2010, 9:55:13 AM, you wrote:
>> 
>>>> LL> On Sep 27, 12:48 pm, Ralph Shnelvar <ral...@dos32.com> wrote:
>>>>>> [Note:  parts of this message were removed to make it a legal post.]
>> 
>>>>>> I am getting a segmentation fault.
>> 
>>>>>> Is there some way to get more information about what caused the fault?
>> 
>>>> LL> Along the segmentation fault you should be seen the backtrace of it.
>> 
>>>> LL> --
>>>> LL> Luis Lavena
>> 
>>>> I wish I did.
>> 
>> CR> You haven't provided any useful information for us to help you (platform, ruby version, code example that causes the crash, etc), but I'm going to try again anyway.
>> 
>> CR> If you are running on a UNIX platform with gdb installed, try this:
>> 
>> CR> gdb --args ruby <script name>
>> 
>> CR> When gdb starts up, type "run" at the prompt. When it crashes this time you might be able to get more information as to location (type 'bt' to get a backtrace from gdb).
>> 
>> CR> cr
>> 
>> Sorry ... Windows Platform.
>> [BUG] Segmentation fault
>> ruby 1.8.7 (2010-01-10 patchlevel 249) [i386-mingw32]
>> 
>> The program is an FXRuby program with about 4 threads running.  Trimming the problem down is not an option.
>> 
>> I was hoping there was some cross-platform general way of getting that info.
> 
> Ah, there might still be a way...
> 
> It appears that your ruby was installed from rubyinstaller.org which means that your ruby was built by gcc. I *think* that if you install the devkit that you might be able to run ruby under gdb on Windows.
> 
> Check the rubyinstaller wiki for instructions on installing the devkit:
> 
> http://github.com/oneclick/rubyinstaller/wiki/Development-Kit
> 
> I don't know if it puts gdb into your path or not. Regardless, try to run ruby under gdb like I suggested above and see what happens.

I just checked and it doesn't look like the devkit install includes gdb. :(

So, what I suggested won't work just by installing devkit. You'll need to download gdb (get a version that matches the gcc version that compiled your ruby binary) and compile it yourself.

cr