useradd segfaults

I have reported this problem before and I really would like it resolved. 
  There is a static buffer used by shadow groups which is easily overrun 
if too many users are added into the same group.

The problem is the buffer size defined in /lib/gshadow.c line 51
#define       MAXMEM  1024

Gets filled.  As a workaround I increase the buffer size but this should 
be fixed.

See https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=125510

I have coded a patch which does dynamic allocation but the existing code 
seems a bit funny so a rewrite is possibly required.  I am willing to do 
this if someone wants to check it for me.

John.

-- 
John Newbigin
Computer Systems Officer
Faculty of Information and Communication Technologies
Swinburne University of Technology
Melbourne, Australia
http://www.it.swin.edu.au/staff/jnewbigin