Re: [opendemo-devel] qvm playback with compressed files

[Conor D. <co...@ma...>]

Hello,

----- Original Message -----
From: "Dr. Uwe Girlich" <Uwe...@ph...>
To: "OpenDemo Development List" <ope...@li...>
Sent: Sunday, January 13, 2002 1:55 PM
Subject: [opendemo-devel] qvm playback with compressed files


> Hello!
>
> I just analysed the crashing behaviour of the QVM code on playback of
> compressed files. It is really strange. The attached patch file adds a
mini
> trace to the first call of fbReadChar, which get the character '<', as we
all
> would expect. But the calling function xmlParseText get another return
value.

Ok this is driving me crazy. If vm_game is 1, then I don't get the bug you
described, but I do get the ~ operator bug. If vm_game is 2, then I do get
the bug you described (with the return value of gzread, it crashes before
fbReadChar exits), but I don't get the ~ operator bug. I fixed the ~ bug,
but nothing I do fixes the return value bug. Perhaps the virtual machine's
frame pointer is getting corrupted somehow? I have no idea how to test for
this.

BTW, gzip input does work for me with vm_game=1, at about half the
performance of a native dll. If we convert a few more functions to macros
(fbEOF and gzeof come to mind), maybe it will get better.

-Conor