Mark Guzdial <guzdial at cc.gatech.edu> wrote:

> I can't read any BMP's with a 3.4 or 3.5 Windows VM on an XP box.  The same 
> BMP's open just fine in 3.2.  It's a VM-level bug because I can read the 
> BMP's in a 3.5 image running in a 3.2 VM.  But in a 3.4 or 3.5 VM, trying 
> to read the BMP crashes Squeak.
Well it's done by the BMPReadWriterPlugin. Since it was in-image code
until 3.6, I guess the evidence comes from the changes file.
Hmm, the plugin was added in update 4891 from code by Andreas dated 16
june 2002. This was nominally for 3.3a and I can't spot any difference
with the code in my latest VMMaker file. I _have_ tested this on my
Acorn and it works fine.
I guess using the 3.2 vm means you're relying on the back up code.
Obvious quick check is to comment out the primitive call in
 !BMPReadWriter methodsFor: 'reading' stamp: 'ar 6/16/2002 18:47'!
read24BmpLine: pixelLine into: formBits startingAt: formBitsIndex width: width
	| pixIndex rgb bitsIndex |
	<primitive: 'primitiveRead24BmpLine' module:'BMPReadWriterPlugin'>
	pixIndex _ 0. "pre-increment"
and see if all seems well. After that it requires someone to debug the
code on a wondows machine...

tim
--
Tim Rowledge, tim at sumeru.stanford.edu, http://sumeru.stanford.edu/tim
No single raindrop believes it is to blame for the flood