xlogo crahes XWin with Fatal Error (Segmentation Fault)

[Yusuke Tamura <tamura@hpc-sol.co.jp>]

Dear sirs,

Some days ago I updated the cygwin system by 'setup.exe', expecting
some "GL" problems are fixed. Since then XWin crashes with some 
application programs. One of the most simplest is 'xlogo'.

What I have done is as follows;

Start [XWin Server] (wait some time for bringing up xterm), then enter
'xlogo' in xterm, [Cygwin/X] window appears immediately. It says,

> A fatal error ...
>
> Caught signal 11 (Segmentation fault). ...
>
> Please open /var/log/xwin/XWin.0.log ...
>
> Vendor: ..
> Release: 1.12.0.0
> Contact: ..
> Package: version 1.12.0-4 built 2012-04-17
> 
> XWin was started ...
>
> X :0 -multiwindow

/var/log/xwin/XWin.0.log does not report anything important at all.

OK, I tried 'X :0 -multiwindow' on one terminal, and on the other 
terminal

$ export DISPLAY=:0.0
$ xlogo

then, the message appears on one therminal;

>Segmentation fault at address 0x44
>
>Fatal server error:
>Caught signal 11 (Segmentation fault). Server aborting
>
>Server terminated with error (1). Closing log file.
>winDeinitMultiWindowWM - Noting shutdown in progress
>winMsgWindowProc - pthread_mutex_unlock () failed: 1

while entering 'X :0' on one terminal, entring 'xlogo' on the other,
there was no fatal problem. Obviously '-multiwindow' does something
wrong.

Keith Lindsay's post might be helpfull as workaround, but I cannot
rollback to the 'version 1.12.0-1 of xorg-server (built 2012-03-12)'  
using 'setup.exe',

April 25, 2012
21:45 	Re: X segmentation fault when particular application attempts 
to open a window

http://cygwin.com/ml/cygwin-xfree/2012-04/msg00100.html

best regards,
Yusuke Tamura
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