On Fri, Dec 2, 2011 at 2:01 AM, <james.cuze...@lyraphase.com> wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: x86_64
> OS: linux-gnu
> Compiler: gcc
> Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
> -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu'
> -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL
> -DHAVE_CONFIG_H -I. -I../bash -I../bash/include -I../bash/lib -g -O2
> -Wall
> uname output: Linux cirrus 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26
> UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
> Machine Type: x86_64-pc-linux-gnu
>
> Bash Version: 4.2
> Patch Level: 10
> Release Status: release
>
> Description:
> popd does not appear to return a nonzero exit status when the
> directory stack is empty anymore. The bash manual says the following for
> popd:
>
> "If the popd command is successful, a dirs is performed as well, and
> the return status is 0. popd returns false if an invalid option is
> encountered, the directory stack is
> empty, a non-existent directory stack entry is
> specified, or the directory change fails."
>
> I am seeing this problem on: Ubuntu 11.10 oneiric
> bash package version: 4.2-0ubuntu4
>
> Repeat-By:
> Put some directories on the stack with pushd, then call popd and check
> the return status. It is expected to be nonzero when the stack is empty or
> an error occurs.
> The following function should pop all dirs off the stack and then
> stop, however the while loop continues infinitely:
>
> popall ()
> {
> local not_done=0;
> while [ $not_done -eq 0 ]; do
> popd;
> not_done=$?;
> done
> }
>
I don't seem to be able to reproduce this:
$ dpkg-query --show bash
bash 4.2-0ubuntu4
$ echo $BASH_VERSION
4.2.10(1)-release
$ declare -f popall
popall ()
{
local not_done=0;
while [ $not_done -eq 0 ]; do
popd;
not_done=$?;
done
}
$ pushd test
~/test ~
$ popall
~
bash: popd: directory stack empty
$
