Calling strcmp/strncmp/strcasecmp/strncasecmp with NULL parameter

[Petter Reinholdtsen]

[Steven Keuchel]
> Well changing the code isn't so easy because i came accross this when 
> debugging a third party library. The manpages do not say anything that 
> calling these functions with illegal arguments will result in undefined 
> behaviour. Maybe you can add it.

The glibc project is not maintaining the manual pages.  They are
maintained somewhere else (not sure where).  The glibc project
maintain the texinfo pages.  You should use this documentation as the
authorative source of info regarding glibc.