Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!oliveb!sun!david@sun.com
From: david@sun.com (live by the lawn dart, die by the lawn dart)
Newsgroups: comp.sources.d
Subject: Re: v17i064:  Zoo archive program, Part01/10
Message-ID: <89034@sun.uucp>
Date: 9 Feb 89 01:27:21 GMT
References: <389@greens.UUCP>
Sender: david@sun.uucp
Lines: 25

In article <389@greens.UUCP> matthew@sunpix.UUCP ( Sun NCAA) writes:

>The problem simply turned out to be, that the value returned from signal()
>under pre-[SunOS]4.0 was a pointer to an int. Under 4.0 it is now a pointer
>to a void.  The fix is (take your choice):
>	...
>2) Redefine the oldsignal declaration in comment.c, misc.c (2 declarations),
>   zoodel.c, zooext.c, and zoopack.c from:
>
>   int (*oldsignal)();
>
>       -- to --
>
>   void (*oldsignal)();

You can easily (?) #ifdef it so it will work with either pre or post 4.0
SunOS:

#ifdef SIG_ERR
#define SIGNAL_HANDLER_TYPE void
#else
#define SIGNAL_HANDLER_TYPE int
#endif

SIGNAL_HANDLER_TYPE (*oldsignal)();