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Date: Wed, 17 Jul 2013 14:59:16 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Issue with run.exe and PWD with spaces since last update (Cygwin 1.7.21)
Message-ID: <20130717125916.GB21347@calimero.vinschen.de>
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References: <295777180.20130716202913@mtu-net.ru>
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User-Agent: Mutt/1.5.21 (2010-09-15)

On Jul 16 20:29, Andrey Repin wrote:
> Greetings, All!
> 
> I'm trying to execute a script that was working fine until recent update.
> It doesn't crash, just, for some reason, trim the last component of a path.
> 
> In a nutshell, the issue is this:
> 
> $ mkdir "/a b"
> $ cd "/a b"
> $ ls -l "$SYSTEMROOT/System32/notepad.exe"
> (just to confirm that the file actually exists)
> $ run "$SYSTEMROOT/System32/notepad.exe"
> Error pops up:

This never works, even in any other directory.  It's the same problem
which disallows checkX to work, as reported in
http://cygwin.com/ml/cygwin/2013-07/msg00326.html

The cause is an optimization when calling cygwin executables.  So far,
Cygwin executables got their arguments via mmeory copy as well as via
the single-line cmdline argument of CreateProcess.  We removed the
latter since it was never meant to work that way in the first place.

Unfortunately it turns out that run/run2/checkX are Cygwin executables
which don't have a main routine, but rather a WinMain routine.  The
latter has a single cmdline argument, which is generated via
GetCommandLine().  But since Cygwin executables get no single-line
command line anymore, this stopped working.


Stay tuned,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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