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Re: [GNU Autoconf 2.63] testsuite: 166 failed

From: Ralf Wildenhues
Subject: Re: [GNU Autoconf 2.63] testsuite: 166 failed
Date: Fri, 10 Oct 2008 21:35:13 +0200
User-agent: Mutt/1.5.18 (2008-05-17)

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Hi Eric, Thomas,

* Eric Blake wrote on Fri, Oct 10, 2008 at 09:20:47PM CEST:
> Hmmm.  This is potentially buggy, anyway.  It is unsafe to call cd "$srcdir" 
> if 
> $srcdir is a relative path, does not contain /, and CDPATH is set in the 
> environment (POSIX requires that it output the destination path as discovered 
> by the CDPATH lookup).  Of course, configure has already tried to unset 
> but what if the user declared it to be a read-only variable?

I think we've at one time declared the user deserving the consequences
if she sets CDPATH to be read-only.  There is lots more code in
autotools that can break in this case, and not much you can do about it.

I'm not sure whether letting configure barf over read-only CDPATH
(if it can portably be tested, that is) would be a good idea.
As long as CDPATH contains only paths that don't deal with this code,
users could rightfully(?) complain about that.  Maybe a big fat warning

Thomas, is read-only CDPATH the issue here BTW?

Thanks for looking at this, BTW, Eric.


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