grep: unusually high memory use with '-o' option

[Justin Pryzby]

Please see <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=280187>
where it is documented that grep -o uses increasing amount of memory,
probably indicating a leak.  You can test with:

  grep '^c..........' /usr/share/dict/words >/tmp/words
  ./build-tree/grep-2.5.1/src/grep -of /tmp/words /usr/share/dict/words

It seems to me that after each output, grep should return to the
approximate memory usage as at the previous output.  However, the
memory usage instead increases, consistent with the report.

-- 
Clear skies,
Justin