Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!usc!csun!csusac!hoodr
From: hoodr@csusac.uucp (Robert Hood)
Newsgroups: comp.sys.next
Subject: C Compiler BUG
Keywords: BUG
Message-ID: <1989Jul12.193615.27988@csusac.uucp>
Date: 13 Jul 89 02:36:13 GMT
Organization: California State University, Sacramento
Lines: 74


	I ran into some strange compiler behavior on the NeXT.  It seems
that the C compiler can't handle #ifdef's or #defines inside of a command
very well.

The following piece code was taken from NetHack 2.3e:

#define		index	strchr		(defined in header file)	

		otmp>dknown = index(
	#ifdef KAA
	#ifdef SPELLS
		"/=!?*+)",
	#else
		"/=!?*)",
	#endif 
	#else
	#ifdef SPELLS
		"/=!?*+",
	#else
		"/=!?*",
	#endif
	#endif
		    let) ? 0 : 1;

the compiler gives three errors for this code:
	unterminated #if conditional
	#else not within a conditional
	too many (5) args to macro 'index'

Notice the lhe last error.  ALL of the possiblilities were processed!

(too bad we don't have "cpp" so we can see what the preprocessor is doing!)

Another piece of code from a different part of nethack also produced a
compiler error (notice the #ifdef inside of a command):

    
	(void) sprintf(buf, "killed by%s",
		!strncmp(killer, "the ", 4) ? "" :
		!strcmp(killer, "starvation") ? "" :
		!strncmp(killer, "Mr.") ? "" :
		!strncmp(killer, "Ms.") ? "" :
#ifdef STOOGES
		!strcmp(killer, "Larry") ? "" :
		!strcmp(killer, "Curly") ? "" :
		!strcmp(killer, "Moe") ? "" :
#endif
		index(vowels, *killer) ? " an" : " a");


	I've also had lots of trouble compiling normal BSD 4.3 source.
Many times source that will compile on a "standard" BSD 4.3 will produce
lots of compiler "type mismatch" errors..

	One more thing:  Why isn't there a "/usr/etc/libresolv.a".  The
NeXT supports networking and nameserving very well, but I would like to 
compile other networking/nameserver programs too.


		Robert Hood
		California State University: Sacramento

	UUCP: ..ucdavis!csusac!cssexb!hoodr
	BITNET: nctp003@CCS.CSUSCC.CALSTATE.EDU




-- 
------------------------------------------------------------------------
  Robert Hood   -- California State University:  Sacramento (ooooh...)
    UUCP:  ..csusac!hoodr
    BITNet:  NCTP003@CCS.CSUSCC.CALSTATE.EDU