Re: GSWeb crash upon startup [Was: Re: Eeeagh! I'm at my wits end.]

[Simon Stapleton]

On 27 Apr 2004, at 13:38, Richard Frith-Macdonald wrote:
> > By the way, what's with all the IF_NO_GC(RELEASE(x)) stuff in 
> > NSProcessInfo.m, anyway?  The RELEASE/RETAIN etc macros should deal 
> > with GC transparently anyway, no?  Seems like a bunch of 
> > irrelevancies to me, although I'm willing to admit I may well be 
> > wrong on this ;-)
>
> IF_NO_GC is generally used to avoid compiler warnings and to wrap 
> larger sections of code.
> eg rather than having a loop with with RETAIN() operations inside it, 
> you could avoid executing the loop.

Well, I'd say they're at best irrelevant in _gnu_process_args(), in 
that case, and at worst, obfuscation.

> > > The values of _gnu_noobjc_argv and _gnu_noobjc_env should be zero 
> > > after +initialize is called, while _gnu_processName, _gnu_arguments 
> > > and _gnu_environment should be non-nil.
> >
> > Yep, that's what I'm seeing (at least at the end of +initialize).  It 
> > seems that they are being released later, although why, I can't say.  
> >  I _can_ say it's not me (explicitly) doing it, though.  They might 
> > be being trampled, but I can't see any reason why that should happen, 
> > either.
>
> I don't know of any reason for them being overwritten ... which is 
> what you need to look for.
> The objects are not just being released ... the actual values in the 
> variables are being changed.

OK.  Here's _exactly_ what happens in my app.

My main() is absolutely bog-stock, create an autorelease pool and call 
GSWApplicationMain() with the name of the app and argc/argv
At this point, the args have been stored away by [NSProcessInfo load], 
but [NSProcessInfo initialize] has not been called
GSWApplicationMain calls GSWApplicationMainReal
This calls +[NSProcessInfo processInfo]
This triggers +[NSProcessInfo initialize], which correctly, but for 
some reason transiently, sets _gnu_environment and friends
On entry to +[NSProcessInfo processInfo], they have been reset to null.

What can I possibly be doing wrong?  There Is absolutely no logic to 
this that I can see.  And certainly nothing that I'm explicitly doing 
to cause it.  It's all in the GNUstep code.

some further information on the Application, in case it's of any 
interest/relevance

The EOs for the app are built into their own framework, which includes 
the model
The Components for the app are built into a number of other frameworks, 
some of which depend on the EO framework
The App itself relies on all the above-mentioned frameworks.

Simon

--
PGP Key Id : 0x50D0698D
--
If the answer isn't obvious, the question is a distraction. Go find an 
easier question.