--- Gnu-Mach/ddb/db_lex.c	2020/09/02 04:45:50	1.1.1.3
+++ Gnu-Mach/ddb/db_lex.c	2020/09/02 04:48:19	1.1.1.4
@@ -50,7 +50,7 @@ db_expr_t db_look_token = 0;
 
 int
 db_read_line(repeat_last)
-	char	*repeat_last;
+	const char	*repeat_last;
 {
 	int	i;
 
@@ -82,9 +82,9 @@ db_flush_line(void)
 }
 
 void
-db_switch_input(buffer, size)
-	char *buffer;
-	int  size;
+db_switch_input(
+	char *buffer,
+	int  size)
 {
 	db_lp = buffer;
 	db_last_lp = db_lp;
@@ -94,8 +94,7 @@ db_switch_input(buffer, size)
 }
 
 void
-db_save_lex_context(lp)
-	register struct db_lex_context *lp;
+db_save_lex_context(struct db_lex_context *lp)
 {
 	lp->l_ptr = db_lp;
 	lp->l_eptr = db_endlp;
@@ -105,7 +104,7 @@ db_save_lex_context(lp)
 
 void
 db_restore_lex_context(lp)
-	register struct db_lex_context *lp;
+	const struct db_lex_context *lp;
 {
 	db_lp = lp->l_ptr;
 	db_last_lp = db_lp;
@@ -131,15 +130,13 @@ db_read_char(void)
 }
 
 void
-db_unread_char(c)
-	int c;
+db_unread_char(int c)
 {
 	db_look_char = c;
 }
 
 void
-db_unread_token(t)
-	int	t;
+db_unread_token(int t)
 {
 	db_look_token = t;
 }
@@ -179,10 +176,10 @@ db_flush_lex(void)
 void
 db_skip_to_eol(void)
 {
-	register int skip;
-	register int t;
-	register int n;
-	register char *p;
+	int skip;
+	int t;
+	int n;
+	char *p;
 
 	t = db_read_token();
 	p = db_last_lp;
@@ -205,8 +202,8 @@ db_skip_to_eol(void)
 int
 db_lex(void)
 {
-	register char *cp;
-	register int c;
+	char *cp;
+	int c;
 
 	c = db_read_char();
 	while (c <= ' ' || c > '~') {