[ODE] Triangle-box collider in current CVS version

[Shaul Kedem]

Adam,
 Confirmed here as well. All works fine (be it a bit
slow) with -O1 on gcc 3.3.2. trimesh trimesh works
(brilliant).

 I wonder what is the problem? maybe this should go to
the gcc list as well?

Thanks,
Shaul

--- "Adam D. Moss" <adam at gimp.org> wrote:
> Shaul Kedem wrote:
> >  Starting the test from scratch, with no boxes,
> the
> > first couple of boxes I drop go into infinity. so
> > basically there are no boxes to stack and so this
> > doesn't happen. 
> > 
> >  On the other hand, I might be doing something
> wrong,
> > so if anyone has a linux machine , gcc 3.3.2 and
> the
> > cvs version I'd be happy if someone else will
> check
> > this issue as well,
> 
> Confirmed, things work well on gcc 2.95.x but go to
> crap
> on gcc 3.1.1.
> 
> However, I don't think that it's a triangle-box
> specific
> problem, because trimesh-trimesh also fails
> miserably
> under gcc 3.1.1, so I'm guessing it's an OPCODE
> issue --
> and now that I think about it, I seem to recall a
> GCC optimization bug being discussed on this list
> w.r.t.
> Opcode some time ago.  The solution IIRC was to
> hand-compile
> one of the OPCODE modules without -O2 optimization.
> 
> *investigations*
> 
> http://q12.org/pipermail/ode/2003-July/009265.html
> 
> For me, that fixes trimesh-trimesh, but leaves
> tri-box
> broken.  However, compiling /all/ of OPCODE with -O1
> fixes
> trimesh-box too, under gcc 3.1.1.  Someone keener
> might
> care to isolate the other specific module(s) which
> impair
> tri-vs-box's effectiveness (and someone super-keen
> might
> even track down what it is that OPCODE's doing to
> upset
> GCC 3.[123] and whether we can work around it).
> 
> --Adam
> -- 
> Adam D. Moss   . ,,^^   adam at gimp.org  
> http://www.foxbox.org/   co:3
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