void function and pointers

[Doug Gwyn (VLD/VMB)]

Please, folks, when you ask about a mysterious system problem,
include information about the version of software etc.  E.g.,
"4.2BSD on a VAX-11/750".

Older versions of "pcc", such as those distributed with UNIX
System III and 4.2BSD, do not properly handle (void (*)()).
If you have one of these systems, then that probably explains
why your test code does not compile.  You can either fix the
compiler or get a new one; I recommend the latter, since there
are many other bugs in the older "pcc"s as well.