Index: code/tools/lcc/cpp/cpp.c
===================================================================
--- code/tools/lcc/cpp/cpp.c	(revision 1382)
+++ code/tools/lcc/cpp/cpp.c	(working copy)
@@ -204,9 +204,14 @@
 			error(WARNING, "Syntax error in #endif");
 		break;
 
+	case KWARNING:
+		trp->tp = tp+1;
+		error(WARNING, "#warning directive: %r", trp);
+		break;
+
 	case KERROR:
 		trp->tp = tp+1;
-		error(WARNING, "#error directive: %r", trp);
+		error(ERROR, "#error directive: %r", trp);
 		break;
 
 	case KLINE:
Index: code/tools/lcc/cpp/cpp.h
===================================================================
--- code/tools/lcc/cpp/cpp.h	(revision 1382)
+++ code/tools/lcc/cpp/cpp.h	(working copy)
@@ -24,7 +24,7 @@
 		DSHARP1, NAME1, DEFINED, UMINUS };
 
 enum kwtype { KIF, KIFDEF, KIFNDEF, KELIF, KELSE, KENDIF, KINCLUDE, KDEFINE,
-		KUNDEF, KLINE, KERROR, KPRAGMA, KDEFINED,
+		KUNDEF, KLINE, KWARNING, KERROR, KPRAGMA, KDEFINED,
 		KLINENO, KFILE, KDATE, KTIME, KSTDC, KEVAL };
 
 #define	ISDEFINED	01	/* has #defined value */
Index: code/tools/lcc/cpp/nlist.c
===================================================================
--- code/tools/lcc/cpp/nlist.c	(revision 1382)
+++ code/tools/lcc/cpp/nlist.c	(working copy)
@@ -29,6 +29,7 @@
 	{"define",	KDEFINE,	ISKW},
 	{"undef",	KUNDEF,		ISKW},
 	{"line",		KLINE,		ISKW},
+	{"warning",	KWARNING,	ISKW},
 	{"error",	KERROR,		ISKW},
 	{"pragma",	KPRAGMA,	ISKW},
 	{"eval",		KEVAL,		ISKW},