'random' numbers in RLENGTH

[Lasse Kliemann]

Trustix Secure Linux 3.0.5 running Linux 2.6.19.7.

% gawk --version
GNU Awk 3.1.5

% echo | gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
1208895986
% echo gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
1208429042
% echo | gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
1208584690

...and so on.

% echo a | gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
26
% echo b | gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
26
% echo c | gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
26

% echo x | gawk  '{ match($0, /x*/) ; print RLENGTH ; }'
1

All results, except the last one, should be 0, I presume, as it is the case, 
e.g., with POSIX nawk from the Heirloom Toolchest:

% echo | nawk  '{ match($0, /x*/) ; print RLENGTH ; }'
0

Correct results can also be observed with nawk on Solaris, and with gawk 
3.1.1. on Solaris (which has other bugs, unfortunately).

Switching on POSIX mode in gawk 3.1.5. does not help.

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