Convert a few more function definitions to prototype style.

This patch converts a few more function definitions in glibc from
old-style K&R to prototype style.  This is sufficient to build and
test on x86_64 and x86 with -Wold-style-definition (I'll test on some
more architectures before proposing the actual addition of
-Wold-style-definition).

Tested for x86_64 and x86 with -Wold-style-definition in use
(testsuite - this patch affects files containing assertions).

	* io/fts.c (fts_open): Convert to prototype-style function
	definition.
	* malloc/mcheck.c (mcheck): Likewise.
	(mcheck_pedantic): Likewise.
	* posix/regexec.c (re_search_2_stub): Likewise.  Use
	internal_function.
	(re_search_internal): Likewise.
	* resolv/res_init.c [RESOLVSORT] (net_mask): Convert to
	prototype-style function definition.
	* sunrpc/clnt_udp.c (clntudp_call): Likewise.
	* sunrpc/pmap_rmt.c (clnt_broadcast): Likewise.
	* sunrpc/rpcsvc/rusers.x (xdr_utmp): Likewise.
	(xdr_utmpptr): Likewise.
	(xdr_utmparr): Likewise.
	(xdr_utmpidle): Likewise.
	(xdr_utmpidleptr): Likewise.
	(xdr_utmpidlearr): Likewise.

ChangeLog

@@ -1,5 +1,23 @@
 2015-10-21  Joseph Myers  <joseph@codesourcery.com>
 
+	* io/fts.c (fts_open): Convert to prototype-style function
+	definition.
+	* malloc/mcheck.c (mcheck): Likewise.
+	(mcheck_pedantic): Likewise.
+	* posix/regexec.c (re_search_2_stub): Likewise.  Use
+	internal_function.
+	(re_search_internal): Likewise.
+	* resolv/res_init.c [RESOLVSORT] (net_mask): Convert to
+	prototype-style function definition.
+	* sunrpc/clnt_udp.c (clntudp_call): Likewise.
+	* sunrpc/pmap_rmt.c (clnt_broadcast): Likewise.
+	* sunrpc/rpcsvc/rusers.x (xdr_utmp): Likewise.
+	(xdr_utmpptr): Likewise.
+	(xdr_utmparr): Likewise.
+	(xdr_utmpidle): Likewise.
+	(xdr_utmpidleptr): Likewise.
+	(xdr_utmpidlearr): Likewise.
+
 	* math/auto-libm-test-in: Add more tests of hypot, j0, j1, jn,
 	log, log10 and log2.
 	* math/auto-libm-test-out: Regenerated.

io/fts.c

@@ -85,10 +85,8 @@ static int      fts_safe_changedir (FTS *, FTSENT *, int, const char *)
 #define	BREAD		3		/* fts_read */
 
 FTS *
-fts_open(argv, options, compar)
+fts_open (char * const *argv, int options,
-	char * const *argv;
+	  int (*compar) (const FTSENT **, const FTSENT **))
-	int options;
-	int (*compar) (const FTSENT **, const FTSENT **);
 {
 	FTS *sp;
 	FTSENT *p, *root;

malloc/mcheck.c

@@ -369,8 +369,8 @@ mabort (enum mcheck_status status)
 #define malloc_opt_barrier(x) \
   ({ __typeof (x) __x = x; __asm ("" : "+m" (__x)); __x; })
 
-int mcheck (func)
+int
-void (*func)(enum mcheck_status);
+mcheck (void (*func) (enum mcheck_status))
 {
   abortfunc = (func != NULL) ? func : &mabort;
 
@@ -400,8 +400,8 @@ void (*func)(enum mcheck_status);
 libc_hidden_def (mcheck)
 #endif
 
-int mcheck_pedantic (func)
+int
-void (*func)(enum mcheck_status);
+mcheck_pedantic (void (*func) (enum mcheck_status))
 {
   int res = mcheck (func);
   if (res == 0)

posix/regexec.c

@@ -345,12 +345,11 @@ weak_alias (__re_search_2, re_search_2)
 #endif
 
 static int
-re_search_2_stub (bufp, string1, length1, string2, length2, start, range, regs,
+internal_function
-		  stop, ret_len)
+re_search_2_stub (struct re_pattern_buffer *bufp, const char *string1,
-    struct re_pattern_buffer *bufp;
+		  int length1, const char *string2, int length2, int start,
-    const char *string1, *string2;
+		  int range, struct re_registers *regs,
-    int length1, length2, start, range, stop, ret_len;
+		  int stop, int ret_len)
-    struct re_registers *regs;
 {
   const char *str;
   int rval;
@@ -606,14 +605,10 @@ re_exec (const char *s)
    (START + RANGE >= 0 && START + RANGE <= LENGTH)  */
 
 static reg_errcode_t
-__attribute_warn_unused_result__
+__attribute_warn_unused_result__ internal_function
-re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
+re_search_internal (const regex_t *preg, const char *string, int length,
-		    eflags)
+		    int start, int range, int stop, size_t nmatch,
-    const regex_t *preg;
+		    regmatch_t pmatch[], int eflags)
-    const char *string;
-    int length, start, range, stop, eflags;
-    size_t nmatch;
-    regmatch_t pmatch[];
 {
   reg_errcode_t err;
   const re_dfa_t *dfa = (const re_dfa_t *) preg->buffer;

resolv/res_init.c

@@ -554,9 +554,9 @@ res_setoptions(res_state statp, const char *options, const char *source) {
 
 #ifdef RESOLVSORT
 /* XXX - should really support CIDR which means explicit masks always. */
+/* XXX - should really use system's version of this */
 static u_int32_t
-net_mask(in)		/* XXX - should really use system's version of this */
+net_mask (struct in_addr in)
-	struct in_addr in;
 {
 	u_int32_t i = ntohl(in.s_addr);
 

sunrpc/clnt_udp.c

@@ -257,14 +257,20 @@ is_network_up (int sock)
 }
 
 static enum clnt_stat
-clntudp_call (cl, proc, xargs, argsp, xresults, resultsp, utimeout)
+clntudp_call (/* client handle */
-     CLIENT *cl;	/* client handle */
+	      CLIENT *cl,
-     u_long proc;		/* procedure number */
+	      /* procedure number */
-     xdrproc_t xargs;		/* xdr routine for args */
+	      u_long proc,
-     caddr_t argsp;		/* pointer to args */
+	      /* xdr routine for args */
-     xdrproc_t xresults;	/* xdr routine for results */
+	      xdrproc_t xargs,
-     caddr_t resultsp;		/* pointer to results */
+	      /* pointer to args */
-     struct timeval utimeout;	/* seconds to wait before giving up */
+	      caddr_t argsp,
+	      /* xdr routine for results */
+	      xdrproc_t xresults,
+	      /* pointer to results */
+	      caddr_t resultsp,
+	      /* seconds to wait before giving up */
+	      struct timeval utimeout)
 {
   struct cu_data *cu = (struct cu_data *) cl->cl_private;
   XDR *xdrs;

sunrpc/pmap_rmt.c

@@ -196,15 +196,22 @@ getbroadcastnets (struct in_addr *addrs, int naddrs)
 
 
 enum clnt_stat
-clnt_broadcast (prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
+clnt_broadcast (/* program number */
-     u_long prog;		/* program number */
+		u_long prog,
-     u_long vers;		/* version number */
+		/* version number */
-     u_long proc;		/* procedure number */
+		u_long vers,
-     xdrproc_t xargs;		/* xdr routine for args */
+		/* procedure number */
-     caddr_t argsp;		/* pointer to args */
+		u_long proc,
-     xdrproc_t xresults;	/* xdr routine for results */
+		/* xdr routine for args */
-     caddr_t resultsp;		/* pointer to results */
+		xdrproc_t xargs,
-     resultproc_t eachresult;	/* call with each result obtained */
+		/* pointer to args */
+		caddr_t argsp,
+		/* xdr routine for results */
+		xdrproc_t xresults,
+		/* pointer to results */
+		caddr_t resultsp,
+		/* call with each result obtained */
+		resultproc_t eachresult)
 {
   enum clnt_stat stat = RPC_FAILED;
   AUTH *unix_auth = authunix_create_default ();

sunrpc/rpcsvc/rusers.x

@@ -137,9 +137,7 @@ program RUSERSPROG {
 %bool_t xdr_utmp (XDR *xdrs, struct ru_utmp *objp);
 %
 %bool_t
-%xdr_utmp(xdrs, objp)
+%xdr_utmp (XDR *xdrs, struct ru_utmp *objp)
-%	XDR *xdrs;
-%	struct ru_utmp *objp;
 %{
 %	/* Since the fields are char foo [xxx], we should not free them. */
 %	if (xdrs->x_op != XDR_FREE)
@@ -171,9 +169,7 @@ program RUSERSPROG {
 %bool_t xdr_utmpptr(XDR *xdrs, struct ru_utmp **objpp);
 %
 %bool_t
-%xdr_utmpptr(xdrs, objpp)
+%xdr_utmpptr (XDR *xdrs, struct ru_utmp **objpp)
-%	XDR *xdrs;
-%	struct ru_utmp **objpp;
 %{
 %	if (!xdr_reference(xdrs, (char **) objpp, sizeof (struct ru_utmp),
 %			   (xdrproc_t) xdr_utmp)) {
@@ -183,9 +179,7 @@ program RUSERSPROG {
 %}
 %
 %bool_t
-%xdr_utmparr(xdrs, objp)
+%xdr_utmparr (XDR *xdrs, struct utmparr *objp)
-%	XDR *xdrs;
-%	struct utmparr *objp;
 %{
 %	if (!xdr_array(xdrs, (char **)&objp->uta_arr, (u_int *)&objp->uta_cnt,
 %		       MAXUSERS, sizeof(struct ru_utmp *),
@@ -198,9 +192,7 @@ program RUSERSPROG {
 %bool_t xdr_utmpidle(XDR *xdrs, struct utmpidle *objp);
 %
 %bool_t
-%xdr_utmpidle(xdrs, objp)
+%xdr_utmpidle (XDR *xdrs, struct utmpidle *objp)
-%	XDR *xdrs;
-%	struct utmpidle *objp;
 %{
 %	if (!xdr_utmp(xdrs, &objp->ui_utmp)) {
 %		return (FALSE);
@@ -214,9 +206,7 @@ program RUSERSPROG {
 %bool_t xdr_utmpidleptr(XDR *xdrs, struct utmpidle **objp);
 %
 %bool_t
-%xdr_utmpidleptr(xdrs, objpp)
+%xdr_utmpidleptr (XDR *xdrs, struct utmpidle **objpp)
-%	XDR *xdrs;
-%	struct utmpidle **objpp;
 %{
 %	if (!xdr_reference(xdrs, (char **) objpp, sizeof (struct utmpidle),
 %			   (xdrproc_t) xdr_utmpidle)) {
@@ -226,9 +216,7 @@ program RUSERSPROG {
 %}
 %
 %bool_t
-%xdr_utmpidlearr(xdrs, objp)
+%xdr_utmpidlearr (XDR *xdrs, struct utmpidlearr *objp)
-%	XDR *xdrs;
-%	struct utmpidlearr *objp;
 %{
 %	if (!xdr_array(xdrs, (char **)&objp->uia_arr, (u_int *)&objp->uia_cnt,
 %		       MAXUSERS, sizeof(struct utmpidle *),