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

[Brian Dessent]

Christopher Faylor wrote:

> >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.
> 
> Thanks for the test case.  This should be fixed in the next snapshot.

This looks like it has regressed.  I am using CVS HEAD as of yesterday
and have run into the "finding the maximum length of command line
arguments" hang in configure scripts.  Peter's testcase fails too.  As a
workaround I've set cygexec on my mounts which seems to workaround the
issue (and allows larger commandlines anyway.)

Brian

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