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Re: [bug-gzip] gzip-1.5 test failures on FreeBSD 9.0 and NetBSD 5.1
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From: |
Eric Blake |
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Subject: |
Re: [bug-gzip] gzip-1.5 test failures on FreeBSD 9.0 and NetBSD 5.1 |
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Date: |
Wed, 20 Jun 2012 09:08:28 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0 |
On 06/20/2012 08:45 AM, Paul Eggert wrote:
> More generally, the problem is that often people use scripts
> in Perl or Python or whatnot to run a test, or run a test from
> a shell spawned by a terminal emulator, and these scripts
> or terminal emulators may execute chdir without updating PWD,
> so the shell starts up with the wrong PWD.
POSIX requires the shell to sanitize PWD at startup rather than relying
on the (possibly-incorrect) value that it may have inherited from the
environment. But knowing whether a shell follows the POSIX rules on PWD
could indeed be useful for deciding portable workarounds and/or altering
the shell probing done at the front of autoconf scripts to pick a better
shell.
--
Eric Blake address@hidden +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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