Index: src/main.cc
===================================================================
--- src/main.cc	(revision 2a7e29b9f4c8e0d554bac2d1b9356c11a4fbcaba)
+++ src/main.cc	(revision 122cac768593e7ffca253345864ed4ecff6809f3)
@@ -9,7 +9,7 @@
 // Author           : Richard C. Bilson
 // Created On       : Fri May 15 23:12:02 2015
-// Last Modified By : Rob Schluntz
-// Last Modified On : Fri May 06 15:59:09 2016
-// Update Count     : 203
+// Last Modified By : Peter A. Buhr
+// Last Modified On : Sun Jun  5 15:57:30 2016
+// Update Count     : 205
 //
 
@@ -182,5 +182,5 @@
 		  case '?':
 			cout << "Unknown option: '" << (char)optopt << "'" << endl;
-			exit(1);
+			exit( EXIT_FAILURE );
 		  default:
 			abort();
@@ -194,5 +194,5 @@
 			if ( ! input ) {
 				std::cout << "Error: can't open " << argv[ optind ] << std::endl;
-				exit( 1 );
+				exit( EXIT_FAILURE );
 			} // if
 			// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
@@ -220,5 +220,5 @@
 			if ( builtins == NULL ) {
 				std::cerr << "Error: can't open builtins.cf" << std::endl;
-				exit( 1 );
+				exit( EXIT_FAILURE );
 			} // if
 
@@ -230,5 +230,5 @@
 				if ( prelude == NULL ) {
 					std::cerr << "Error: can't open prelude.cf" << std::endl;
-					exit( 1 );
+					exit( EXIT_FAILURE );
 				} // if