[Mono-dev] SGen improved and looking for testers

Jonathan Gagnon jonathan.gagnon at croesus.com
Tue May 25 10:25:09 EDT 2010

Here's a simple test case that doesn't behave properly with sgen.  The
runtime doesn't crash, but I get a NullReferenceException where I shouldn't.

The same program runs perfectly with Boehm.


-----Message d'origine-----
De : Mark Probst [mailto:mark.probst at gmail.com] 
Envoyé : Friday, May 21, 2010 4:33 PM
À : Jonathan Gagnon
Cc : mono-devel-list
Objet : Re: [Mono-dev] SGen improved and looking for testers

Hi Jonathan,

> I did some tests with May 19th tarballs and I'm impressed to see that the
> memory usage in one of my test is a lot lower when using sgen compared to
> boehm.

That's good to hear!  We're getting similar reports from the Plastic SCM

> Stability also seemed to be great until I got a segmentation fault.
> the call stack in case you can get something out of it:
> #0  0x081c2d12 in copy_object_no_checks (obj=0xf780fd98) at sgen-gc.c:2082

There's not too much I can make of this, unfortunately.  Does your
application use non-root appdomains?

Can I reproduce this myself somehow?  If not, would you be willing to
spend some time helping me figure out this bug?

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