[plt-dev] all versions >= 4.1.5.x *very* broken in Windows

Thanks! I have not been able to fix it, yet, but I can easily reproduce
the problem using these directions.

At Tue, 19 May 2009 17:08:24 -0400, Dave Herman wrote:
> Okay, I got it. Here's how I can reproduce it quickly and reliably:
> 
> Open collects/mzlib/thread.ss in a new window. Scroll down so the lambda 
> expression on line 63 is towards the top of the window, and position the 
> keyboard cursor at 63:8, i.e. the outside of the lambda expression, so 
> that a very large portion of the window is highlighted gray. Maximize 
> the window.
> 
> Now open a new window. Open collects/mzlib/private/structure-helper.ss. 
> Leave the keyboard cursor at the initial position, so the whole 
> definitions window is selected and highlighted gray. Maximize the window.
> 
> Now alt-tab back and forth quickly between the two windows. After four 
> or five switches, DrScheme reliably freezes.
> 
> Dave
> 
> Dave Herman wrote:
> > Ooh, and it just happened again-- I wonder if I'm getting closer to a 
> > method for reproducing. Stay tuned...
> > 
> > Dave
> > 
> > Dave Herman wrote:
> >> I'm afraid it just happened again. I've had DrScheme open for probably 
> >> 5 or 6 hours, with two windows, several tabs each. I was switching 
> >> from one window to the other, and it needed to completely repaint-- 
> >> it's just a gray background-- but it froze. Processor idle, no disk 
> >> thrashing. Windows reports the DrScheme image is taking about 180M 
> >> (I've got the DrScheme memory limit set at 256M).
> >>
> >> Dave
> >>
> >> Dave Herman wrote:
> >>>> I have not been able to recreate the behavior, but I have a guess at
> >>>> the problem. Can you try the latest pre-release build (as of Tuesday,
> >>>> May 19 2009, 09:10 EDT)?
> >>>
> >>> Downloading now. I should be spending a few hours coding today so 
> >>> I'll let you know if I can reproduce it.
> >>>
> >>> Dave
> >>>
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