stdin seekable failure [was: HEAD: inclusion order wrong for input.c]

[Eric Blake]

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According to Ralf Wildenhues on 4/10/2007 12:55 PM:

Hi Ralf,

> ../../m4/tests/others.at:487: (m4 -EE; cat) < in.m4
> + m4 -EE
> + cat
> stderr:
> /tmp/build/src/.libs/lt-m4:stdin:1: Warning: dnl: extra arguments ignored: 1 
> > 0
> --- - 2007-04-10 20:48:38.229645000 +0200
> +++ /tmp/build/tests/testsuite.dir/at-stdout  2007-04-10 20:48:38.000000000 
> +0200
> @@ -1,2 +1 @@
> -trailing data

Hmm.  I think the problem here is that on abrupt exit, you get the
system's implicit closure of stdin without any explicit fflush(stdin),
which is thus leaving the fd offset in the wrong position so that the
trailing data is not picked up by cat.  I'm guessing that you are
suffering from what I consider to be a glibc bug, but which Ulrich refuses
to cater to: http://sources.redhat.com/bugzilla/show_bug.cgi?id=3746

Maybe the closeout module needs to be updated to worry about stdin as well
as stdout/stderr?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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