[Mono-list] My program randomly doesn't work with Mono

[Robert Jordan]

Hi,

Chris Seaton wrote:
> I ran it several times in GDB and managed to reproduce the problem,  
> but GDB didn't say that anything went wrong.

When the program is hanging again, send it a SIQUIT:

	kill -QUIT <pid-of-the-prog>

The runtime will dump a backtrace of all threads.

If you are proficient with GDB (see http://mono-project.com/Debugging),
you could interrupt the debugger with Ctrl-C and call the
"mono_backtrace" macro.

After you've got a backtrace (either from SIGQUIT or gdb), go to
http://mono-project.com/Bugs and file a bug for the "Runtime"
component, preferably with a small test case.

Robert


> 
> Chris
> 
> On 16 May 2007, at 12:03, joeri Belis wrote:
> 
>> Does it work when run from a debugger environment?
>>
>> -----Oorspronkelijk bericht-----
>> Van: mono-list-bounces at lists.ximian.com
>> [mailto:mono-list-bounces at lists.ximian.com] Namens Chris Seaton
>> Verzonden: woensdag 16 mei 2007 12:08
>> Aan: List Mono
>> Onderwerp: [Mono-list] My program randomly doesn't work with Mono
>>
>> Hi,
>>
>> Sorry for the very strange and vague issue report:
>>
>> My c sharp mono program randomly works and doesn't work. When I say
>> doesn't work - it doesn't crash - the program logic  inexplicably
>> fails - I know, I know, bear with me...
>>
>> My program has no IO apart from reading from files that I am positive
>> are not changing between runs. There is no network code. There is no
>> threading at all. There is no external process launching. There are
>> no libraries apart from System.*.
>>
>> When it suddenly stops working, if I put in a Console.WriteLine
>> statement to see what's going on at a certain point it will suddenly
>> work. And that's "Console.WriteLine("test")" - I'm not calling a
>> property or anything that could possibly have a side effect in
>> evaluating it.
>>
>> I've tried running my program on two separate installations of Mono
>> on a PowerPC OS X and an x86 Linux, one of those not being set up by
>> myself. I've tried 1.2.3.1 and 1.2.4 with the same problem. It's very
>> intermittent. I'll be working happily
>>
>> The only strange thing I do is a massive amount of dynamic code
>> emission. Lots of TypeBuilder and DynamicMethods. It also uses a fair
>> bit of memory, usually up to about 500 MB. I am positive that there
>> must be some subtle bug somewhere in Mono.
>>
>> I know this is no information to diagnose any problem, but has anyone
>> else had any kind of similar experience? Could anyone suggest
>> anything I could try? Remember, there is no crash - the output of my
>> program simply becomes wrong as if it branched incorrectly at some
>> point, or some bit of memory changed behind my back.
>>
>> Thanks
>>
>> Chris Seaton
>> _______________________________________________
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>>
>>
> 
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