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

[Chris Seaton]

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

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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