grep segfault

[Martin Bays]

I seem to have found a segfault bug in grep, version 2.5, using -P.

The simplest case I've found which triggers it is:

echo | grep -P '\n'

though various variations on the theme also cause it.

Note that this is a version of grep from at least 9 months ago or so - I
tried the CVS version and the 2.5.1 src.rpm, but I got "The -P option is
not supported" from both.

HTH,

Martin