--- a/directive.c	Tue Jun 11 10:51:30 2013 -0400
+++ b/directive.c	Tue Jun 11 11:00:01 2013 -0400
@@ -240,6 +240,9 @@
 void
 d_else(struct place *p, struct place *p2, char *line)
 {
+	(void)p2;
+	(void)line;
+
 	if (ifstate->seenelse) {
 		complain(p, "Multiple #else directives in one conditional");
 		complain_fail();
@@ -254,6 +257,9 @@
 void
 d_endif(struct place *p, struct place *p2, char *line)
 {
+	(void)p2;
+	(void)line;
+
 	if (ifstate->prev == NULL) {
 		complain(p, "Unmatched #endif");
 		complain_fail();
@@ -272,6 +278,8 @@
 	size_t pos, argpos;
 	struct place p3, p4;
 
+	(void)p;
+
 	/*
 	 * line may be:
 	 *    macro expansion
@@ -332,6 +340,8 @@
 void
 d_undef(struct place *p, struct place *p2, char *line)
 {
+	(void)p;
+
 	uncomment(line);
 	oneword("#undef", p2, line);
 	macro_undef(line);
@@ -395,6 +405,9 @@
 void
 d_line(struct place *p, struct place *p2, char *line)
 {
+	(void)p2;
+	(void)line;
+
 	/* XXX */
 	complain(p, "Sorry, no #line yet");
 }
@@ -435,6 +448,8 @@
 void
 d_pragma(struct place *p, struct place *p2, char *line)
 {
+	(void)p2;
+
 	complain(p, "#pragma %s", line);
 	complain_fail();
 }