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From: wescott@ncrcae.UUCP (Mike Wescott)
Newsgroups: net.bugs.usg
Subject: Bug in cxref(1) (actually /usr/lib/xcpp), SysV
Message-ID: <2150@ncrcae.UUCP>
Date: Wed, 24-Apr-85 11:58:42 EST
Article-I.D.: ncrcae.2150
Posted: Wed Apr 24 11:58:42 1985
Date-Received: Sat, 27-Apr-85 01:30:54 EST
Reply-To: wescott@ncrcae.UUCP (Mike Wescott)
Organization: NCR, Columbia, SC
Lines: 25

There's a bug that shows up when using cxref.  Some files, when cxref'd
give syntax errors that aren't there.  The problem is in /usr/lib/xcpp,
the special version of cpp(1) used by cxref.  The cxref program invokes
xcpp on each file with a -F option.  The cpp.c code for the -F option
lacks a continue statement; therefore the program processes a spurious
-D option.  On my machine a spurious -Dsr occurred and caused syntax errors
on any file that had an "sr" variable declared.

Fix: in main() of /usr/src/cmd/cpp/cpp.c:

  #ifdef CXREF
		case 'F':
			if ((outfp = fopen(argv[++i],"w")) == NULL)
			{
				fprintf(stderr, "Can't open %s\n",
				    argv[i]);
				exit(1);
			}
+ 			continue; /* mcw: fix for cxref spurious -Dsr */
  #endif


--------------------------
	Mike Wescott
	ncrcae!wescott