Re: [gentoo-amd64] Re: Python-updater line 415 error [Solved]

[Frank Peters <frank.peters@comcast.net>]

On Mon, 3 Aug 2009 07:12:09 +0000 (UTC)
Duncan <1i5t5.duncan@cox.net> wrote:

> 
> I haven't run python-updater in some time but it ran fine when I ran it 
> last.  I do need to run it again since python-3.1 was just in yesterday's 
> updates, tho, and see what happens.
> 

OK.  I've found the source of the problem.

Again, Line 415 is:

broken_libs="$(scanelf -qBN ${OLD_SONAME} <<(grep -e '^obj' ${content} | cut -d' ' -f2))"

At first glance, I wasn't sure exactly what this line was doing.
Reading someone else's code has to be done very thoroughly and carefully.

At first glance, I thought it was a nested command substitution
but it is actually a type of input redirection from a string (a string
that is formed by a command substitution).

However, the construction is INCORRECT.  The line should be this:

broken_libs="$(scanelf -qBN ${OLD_SONAME} <<< $(grep -e '^obj' ${content} | cut -d' ' -f2))"

Notice the "<<< $"

With this correction, python-updater now works as intended
with no errors or funny messages.

Keep in mind that python-updater has had this INCORRECT CODE
for the last several releases (0.7, 0.6, 0.5).

I will file a report with bugs.gentoo.org

(Now I'll try to root out the difficulty with eselect.)

Frank Peters