[Mono-dev] Stack size with mono-2.6.1

[Miguel de Icaza]

Hello,

    I am curious, why does the Main method need 1 megabyte of IL stack?

> Thanks for your answer.
> I'll try one of your solutions.
> 
> IMHO, a nice long term fix for it would be to provide a command-line 
> option to set a max value different from the default's, as for java and 
> heap size (-Xmx). This way, one could fine tune according to the running 
> application.
> 
> Regards,
> 
> Thierry Lafage.
> 
> 
> 
> Rodrigo Kumpera a écrit :
> > This was a stop-gap hack I added to fix a security issue.
> >
> > The value is hardcoded into mono's source and until we figure out a long
> > term fix for it, the only solution is to custom compile mono.
> >
> > I have a patch that improves the JIT to use smaller stacks, but it's 
> > against trunk
> > and remains experimental.
> >
> > Besides that, we need to fix all unbounded code expansion to really 
> > support big
> > stack. Work on this have not been started.
> >
> > Right now, the only remedy for you is to custom build mono after 
> > either removing
> > the stack check[1] or increase it[2]. Be aware that such changes do 
> > have security
> > implications.
> >
> > Sorry for this,
> > Rodrigo Kumpera
> >
> > [1]To remove it, edit mini-x86.c or mini-amd64.c. Search 
> > for MONO_ARCH_MAX_FRAME_SIZE
> > and remove the if that uses it.
> >
> > [2]To increase it, change the define MONO_ARCH_MAX_FRAME_SIZE in either
> > mini-x86.h or mini-amd64.h depending if you're building a 32 or 64 
> > bits mono.
> >
> >  
> >
> >
> >
> > On Wed, Jan 6, 2010 at 9:02 AM, Thierry Lafage 
> > <thierry.lafage at inria.fr <mailto:thierry.lafage at inria.fr>> wrote:
> >
> >     Hi all,
> >
> >     I have a problem with a code running with mono-2.6.1.
> >     It says :
> >     "Unhandled Exception: System.InvalidProgramException: Method toto:main
> >     () stack is too big."
> >
> >     This problem does not appear with mono-2.4.3
> >
> >     In this case, the stack length is more than 1MB (it's ok with less
> >     than
> >     1MB).
> >     My question is: is it possible to force mono-2.6.1 to accept stacks
> >     which are more than 1MB (I've found no related command line option)?
> >
> >     Regards,
> >
> >     Thierry Lafage.
> >
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