Path: utzoo!mnetor!tmsoft!torsqnt!jarvis.csri.toronto.edu!rutgers!mit-eddie!aryeh
From: aryeh@eddie.MIT.EDU (Aryeh M. Weiss)
Newsgroups: comp.unix.xenix
Subject: (Yet another) Bug in C compiler (SCO Xenix V/386 R 2.3.1)
Summary: Trouble sometimes with string constants in macros
Message-ID: <12744@eddie.MIT.EDU>
Date: 19 Sep 89 13:27:17 GMT
Reply-To: eliot%lees-rif.MIT.EDU@eddie.MIT.EDU (Eliot Frank)
Organization: MIT, EE/CS Computer Facilities, Cambridge, MA
Lines: 42

Machine: 16 MHz 386/387 Hauppauge motherboard w/ 1MB. Total mem: 5MB
Op Sys: SCO Xenix V/386 R2.3.1	
Dev Sys: SCO Xenix V/386 R2.3.1

When I compile the code fragment below I get an error

% cc -c mkpathbug.c
mkpathbug.c
mkpathbug.c(10) : error 59: syntax error : 'constant'

but if I first run the code thru the preprocessor

% cc -P mkpathbug.c ; mv mkpathbug.i tmp.c ; cc -c tmp.c

No errors.  There only seems to be a problem if the argument to
MAKEPATH is a macro name rather than a literal.  The ordering of the
statements does not make a difference.

#! /bin/sh
# To extract, remove mail header lines and type "sh filename"
echo x - mkpathbug.c
sed -e 's/^X//' > mkpathbug.c << '!FaR!OuT!'
X#ifndef F77LIB
X#define F77LIB	"/usr/local/lib/f77"
X#endif
X
X#ifndef COMP
X#define	COMP	"fort"
X#endif
X
X#define	MAKEPATH(file)	F77LIB "/" file
Xchar *compiler	=	MAKEPATH(COMP);
Xchar *seg	=	MAKEPATH("LFseg.o");
Xchar *crt0	=	MAKEPATH("LFcrt0.o");
Xchar *libfd	=	MAKEPATH("LFlibfd.a");
Xchar *libf	=	MAKEPATH("LFlibf.a");
Xchar *libc	=	MAKEPATH("LFlibc.a");
X
!FaR!OuT!
exit
-- 
eliot%lees-rif@eddie.mit.edu