get advice about it from Sun) but no patches are issued.
3.x, 4.x, and "Solaris ..." to designate SunOS 5.x.
Most of these operating systems are obsolete. As of 2006-07-24 only
-SunOS 5.7 and later are maintained by Sun and are therefore of
+SunOS 5.7 and later are supported by Sun and are therefore of
practical porting concern for GNU applications. For the current list, see
<http://www.sun.com/service/eosl/solaris/solaris_vintage_eol_5.2005.xml>.