Functions declared as <type> <identifier>(<nil>) should be declared as

<type> <identifier>(<void-type>) in ANSI C.

usr.bin/m4/expr.c

@@ -168,7 +168,7 @@ expr(const char *expbuf)
  * query : lor | lor '?' query ':' query
  */
 static int
-query()
+query(void)
 {
 	int result, true_val, false_val;
 
@@ -190,7 +190,7 @@ query()
  * lor : land { '||' land }
  */
 static int
-lor()
+lor(void)
 {
 	int c, vl, vr;
 
@@ -210,7 +210,7 @@ lor()
  * land : not { '&&' not }
  */
 static int
-land()
+land(void)
 {
 	int c, vl, vr;
 
@@ -230,7 +230,7 @@ land()
  * not : eqrel | '!' not
  */
 static int
-not()
+not(void)
 {
 	int val, c;
 
@@ -250,7 +250,7 @@ not()
  * eqrel : shift { eqrelop shift }
  */
 static int
-eqrel()
+eqrel(void)
 {
 	int vl, vr, op;
 
@@ -288,7 +288,7 @@ eqrel()
  * shift : primary { shop primary }
  */
 static int
-shift()
+shift(void)
 {
 	int vl, vr, c;
 
@@ -312,7 +312,7 @@ shift()
  * primary : term { addop term }
  */
 static int
-primary()
+primary(void)
 {
 	int c, vl, vr;
 
@@ -334,7 +334,7 @@ primary()
  * <term> := <exp> { <mulop> <exp> }
  */
 static int
-term()
+term(void)
 {
 	int c, vl, vr;
 
@@ -368,7 +368,7 @@ term()
  * <term> := <unary> { <expop> <unary> }
  */
 static int
-exp()
+exp(void)
 {
 	int c, vl, vr, n;
 
@@ -397,7 +397,7 @@ exp()
  * unary : factor | unop unary
  */
 static int
-unary()
+unary(void)
 {
 	int val, c;
 
@@ -422,7 +422,7 @@ unary()
  * factor : constant | '(' query ')'
  */
 static int
-factor()
+factor(void)
 {
 	int val;
 
@@ -442,7 +442,7 @@ factor()
  * Note: constant() handles multi-byte constants
  */
 static int
-constant()
+constant(void)
 {
 	int i;
 	int value;
@@ -503,7 +503,7 @@ constant()
  * num : digit | num digit
  */
 static int
-num()
+num(void)
 {
 	int rval, c, base;
 	int ndig;
@@ -561,7 +561,7 @@ bad_digit:
  * eqrel : '=' | '==' | '!=' | '<' | '>' | '<=' | '>='
  */
 static int
-geteqrel()
+geteqrel(void)
 {
 	int c1, c2;
 
@@ -605,7 +605,7 @@ geteqrel()
  * Skip over any white space and return terminating char.
  */
 static int
-skipws()
+skipws(void)
 {
 	int c;
 

usr.bin/m4/gnum4.c

@@ -100,7 +100,7 @@ addtoincludepath(const char *dirname)
 }
 
 static void
-ensure_m4path()
+ensure_m4path(void)
 {
 	static int envpathdone = 0;
 	char *envpath;
@@ -236,7 +236,7 @@ addchar(int c)
 }
 
 static char *
-getstring()
+getstring(void)
 {
 	addchar('\0');
 	current = 0;

usr.bin/m4/main.c

@@ -324,7 +324,7 @@ do_look_ahead(int t, const char *token)
  * macro - the work horse..
  */
 static void
-macro()
+macro(void)
 {
 	char token[MAXTOK+1];
 	int t, l;
@@ -566,7 +566,7 @@ inspect(int c, char *tp)
  * within keywrds block.
  */
 static void
-initkwds()
+initkwds(void)
 {
 	size_t i;
 	unsigned int h;
@@ -635,7 +635,7 @@ dump_stack(struct position *t, int lev)
 
 
 static void 
-enlarge_stack()
+enlarge_stack(void)
 {
 	STACKMAX *= 2;
 	mstack = realloc(mstack, sizeof(stae) * STACKMAX);

usr.bin/m4/misc.c

@@ -152,7 +152,7 @@ pbunsigned(unsigned long n)
 }
 
 void 
-initspaces()
+initspaces(void)
 {
 	int i;
 
@@ -168,7 +168,7 @@ initspaces()
 }
 
 void 
-enlarge_strspace()
+enlarge_strspace(void)
 {
 	char *newstrspace;
 	int i;
@@ -189,7 +189,7 @@ enlarge_strspace()
 }
 
 void
-enlarge_bufspace()
+enlarge_bufspace(void)
 {
 	char *newbuf;
 	int i;
@@ -246,7 +246,7 @@ onintr(int signo __unused)
  * killdiv - get rid of the diversion files
  */
 void
-killdiv()
+killdiv(void)
 {
 	int n;
 
@@ -291,7 +291,7 @@ xstrdup(const char *s)
 }
 
 void
-usage()
+usage(void)
 {
 	fprintf(stderr,
 "usage: m4 [-d flags] [-t name] [-gs] [-D name[=value]]...\n"
@@ -351,7 +351,7 @@ doprintfilename(struct input_file *f)
  * and later dump everything that was added since then to a file.
  */
 size_t
-buffer_mark()
+buffer_mark(void)
 {
 	return bp - buf;
 }

usr.bin/m4/trace.c

@@ -188,7 +188,7 @@ set_trace_flags(const char *s)
 }
 
 static int
-frame_level()
+frame_level(void)
 {
 	int level;
 	int framep;