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Re: setup hangs during postinstall

On Wed, 15 Oct 2003, Brian Ford wrote:

> On Wed, 15 Oct 2003, Christopher Faylor wrote:
> > On Wed, Oct 15, 2003 at 07:24:53PM +0100, Steve Fairbairn wrote:
> > >As Brian has noted, Executing the binary with '< /dev/null' stops the
> > >hanging, but also executing it without capturing the output to a variable
> > >also stops the hanging.
> >
> > I would guess that something like
> >
> > foo=`bar`
> >
> > is what is causing the problem because this uses a pipe for
> > communication.  In a shell that is run from setup.exe, it is possible
> > that stdin is not opened at all and stdout is the pipe in question.
> > Maybe this is somehow confusing the SHF* function.
> Yes.  I thought this had always been clear.

I'd say it's confusing the DLL initialization sequence, as the function
doesn't even have to be called (see the simple hanging example in this

> Since this only happens in bash, and not in sh, I doubt that is the
> problem.  Are we looking at some kind of weird bash bug here?  We have
> almost eliminated most of Cygwin since MINGW SHLWAPI executables exhibit
> the problem.

Speaking of which, what's the version of SHLWAPI that hangs?  On my
machine (which doesn't exhibit the hang) I have

$ ls -l shlwapi.dll msvcrt.dll
-rwxrwxr-x+   1 Administ SYSTEM     300816 Oct 20  2000 shlwapi.dll
-rwxrwxr-x+   1 Administ SYSTEM     290869 Oct 30  2001 msvcrt.dll

The properties dialogs show the following versions:

File version: 5.50.4522.1800
Description: Shell Light-weight Utility Library
Copyright: Copyright (C) Microsoft Corp. 1981-2000

File version: 6.1.9359.0
Description: Microsoft (R) C Runtime Library
Copyright: Copyright (C) Microsoft Corp. 1981-1999

I don't know if it'll help, but it might be worth a shot...
      |\      _,,,---,,_
ZZZzz /,`.-'`'    -.  ;-;;,_
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster."  -- Patrick Naughton

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