20060301 snapshot and later. sh hangs with very long command line

[Peter Rehley]

Hi,

I was building binutils using the cygwin 20060308 snapshot, and when  
it did the check for "finding the maximum length of command line" a  
sh shell goes to 99% cpu usage and doesn't return until I end the  
process using task manager.

I isolated the portion of the script that was hanging and was able to  
repeat the problem.  The script hangs when it checks for a command  
line of length 16384.  This happens every time I run the script, and  
it is reproducible for me on at least windows 2000 and windows XP.   
I've attached a test script.

The problem doesn't happen with the 20060227 snapshot, but appeared  
in 20060301 and later versions.  It is present in the 20060309 snapshot.

Peter

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