[plt-scheme] windows aborts Drscheme

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Sat Jan 20 22:30:57 EST 2007

At Sat, 20 Jan 2007 23:48:21 +0100, "jos koot" wrote:
> I'll send you my program in a seperate mail, for it wont be accepted by the 
> PLT discussion list. It's too big.
> My program (in fact a sequence of about 16 test programs) does not crash 
> when I open the main scm file in a clean system and press the run button 
> without editing anything and without other applications running. 50 times 
> out of 100 the program, which takes about 200 seconds, crashes when I 
> meanwhile open internet explorer and outlook express just to abide my time 
> waiting for the program to finish. Today I runned the program about 20 times 
> and I estimate it crashed (or windows made it crash) more than 10 times.


By following your directions, I was able to find and fix a
Windows-specific, 3m-specific bug. The problem was that code running in
a Windows-level thread (other than the main thread) was trying to
cooperate with the 3m GC, even though it doesn't use GCable memory. The
fix was simple: disable 3m instrumentation for the relevant code.

This bug didn't have anything to do with your program, but your program
does stress the system in the right way to expose the bug. The bug does
have to do with running other programs, because the relevant thread is
attached to a hidden window that listens for events. So, I think the
next build is likely to work better for you.


Posted on the users mailing list.