commands: fix clang errors

commands/ash/setmode.c

@@ -73,7 +73,7 @@ typedef struct bitcmd {
 #define	CMD2_UBITS	0x10
 
 static BITCMD	*addcmd (BITCMD *, int, int, int, unsigned int);
-static int	 compress_mode (BITCMD *);
+static void	 compress_mode (BITCMD *);
 #ifdef SETMODE_DEBUG
 static void	 dumpmode __P((BITCMD *));
 #endif
@@ -408,7 +408,7 @@ dumpmode(set)
  * 'g' and 'o' commands continue to be separate.  They could probably be 
  * compacted, but it's not worth the effort.
  */
-static int
+static void
 compress_mode(set)
 	register BITCMD *set;
 {

commands/autil/anm.c

@@ -99,6 +99,8 @@ extern int rd_unsigned2();
 extern long lseek();
 extern char *strncpy();
 
+void do_file(int fd);
+
 process(fd)
 	int	fd;
 {
@@ -135,7 +137,7 @@ process(fd)
 	}
 }
 
-do_file(fd)
+void do_file(fd)
 	int	fd;
 {
 	struct	outname	*nbufp = NULL;

commands/elle/Makefile

@@ -10,6 +10,11 @@ CPPFLAGS+= -DIGN_JOB_CONTROl
 MAN.elle=
 MAN.ellec=
 
+.if !empty(CC:Mclang)
+# tons of int functions don't return values
+CFLAGS+= -Wreturn-type 
+.endif
+
 defprf.c:	deffun.e
 	cat deffun.e defprf.e | ellec -Pconf  > defprf.c
 

commands/elle/eecmds.c

@@ -8,20 +8,24 @@
  */
 
 #include "elle.h"
+#include "eeproto.h"
 
 /* Function table, see the included file for explanation. */
 
 	/* First must pre-declare function addrs */
+#if 0
 #define EFUN(rtn,rtnstr,name) int rtn();
 #define EFUNHOLE
 #include "eefdef.h"
+#endif
 
 	/* Now re-insert to define function table */
-int (*funtab[])() =
+typedef int (*eefunc)();
+eefunc funtab[] =
 {
 #undef EFUN		/* Avoid redefinition error message */
 #undef EFUNHOLE
-#define EFUN(rtn,rtnstr,name) rtn,
+#define EFUN(rtn,rtnstr,name) (eefunc) rtn,
 #define EFUNHOLE 0,
 #include "eefdef.h"
 };
@@ -102,8 +106,7 @@ int ch;
 /*	Asks for a profile file and sets profile from it.
  */
 f_setprof()
-{	int set_profile();
-	hack_file("Set Profile: ", set_profile);
+{	hack_file("Set Profile: ", set_profile);
 }
 
 #if FX_VTBUTTONS
@@ -214,7 +217,7 @@ register int c;
 #include <sys/file.h>		/* for O_BINARY */
 #endif
 
-set_profile(filename)
+void set_profile(filename)
 char *filename;
 {	char pfile[200];
 	register int pfd, len;

commands/elle/eedisp.c

@@ -189,7 +189,7 @@ redp_init ()
 
 /* SET_TTY() - Set up terminal modes for editing */
 
-set_tty()
+void set_tty()
 {	if(trm_mode) return;	/* Ignore if detached or in edit mode */
 	trm_mode++;
 	ts_enter();		/* Set up system's ideas about terminal */
@@ -249,7 +249,7 @@ set_scr()
  * as to what has changed or needs updating, to avoid wasting time
  * on things which don't need attention.
  */
-redisplay ()
+void redisplay ()
 {	register struct window *w;
 	register i;
 	struct window *make_mode();
@@ -1301,7 +1301,7 @@ done:	s->sl_line = s->sl_nlin;	/* Replace old image by new */
 }
 
 #if FX_SOWIND
-fillset(str,cnt,c)
+void fillset(str,cnt,c)
 char *str;
 int cnt;
 int c;
@@ -1314,7 +1314,7 @@ int c;
 }
 #endif
 
-fillsp(str,cnt)
+void fillsp(str,cnt)
 char *str;
 int cnt;
 {	register int n;
@@ -1324,7 +1324,8 @@ int cnt;
 	do{ *cp++ = SP;
 	  } while(--n);
 }
-inspc(cp0, cpl, cnt)
+
+void inspc(cp0, cpl, cnt)
 char *cp0, *cpl;
 int cnt;
 {	register char *cp, *cp2;
@@ -1348,7 +1349,7 @@ int cnt;
 
 int sctreol = 0;	/* Ugly crock for talking to sctrin() */
 			/* 0 = no EOL seen, 1 = EOL seen, -1 = EOF seen */
-fix_line(slp, olds)
+void fix_line(slp, olds)
 struct scr_line *slp;
 struct scr_line *olds;
 {	register struct scr_line *s;
@@ -1653,7 +1654,7 @@ int on;
 #endif
 
 
-t_move(y,x)
+void t_move(y,x)
 register int y,x;
 {	register int d;
 

commands/elle/eemain.c

@@ -277,7 +277,7 @@ ring_bell()
  * through all modified buffers, complaining about a different one each time,
  * so that the user need not even know how to select a buffer!
  */
-f_retsup()
+void f_retsup()
 {	register char *reply;
 	register int c;
 	register struct buffer *b, *b2;
@@ -354,7 +354,7 @@ f_retsup()
 
 #if FX_WFEXIT
 /* EFUN: "Write File Exit" (not EMACS) - from IMAGEN config */
-f_wfexit()
+void f_wfexit()
 {
 	exp_p = 1;		/* Ensure f_savefiles asks no questions */
 	if (! f_savefiles())	/* Save all modified buffers, but */

commands/elle/eeproto.h

@@ -61,7 +61,7 @@ _PROTOTYPE( int cmd_wait, (void) );
 _PROTOTYPE( int cmd_read, (void) );
 _PROTOTYPE( int cmd_xct, (int ch) );
 _PROTOTYPE( int cmd_idx, (int c) );
-_PROTOTYPE( int set_profile, (char *filename) );
+_PROTOTYPE( void set_profile, (char *filename) );
 _PROTOTYPE( int init_menu, (void) );
 
 /* eediag.c */
@@ -73,10 +73,10 @@ _PROTOTYPE( int db_prwind, (struct window *w) );
 _PROTOTYPE( char *db_scflgs, (int flags) );
 
 /* eedisp.c */
-_PROTOTYPE( int set_tty, (void) );
+_PROTOTYPE( void set_tty, (void) );
 _PROTOTYPE( int clean_exit, (void) );
 _PROTOTYPE( int set_scr, (void) );
-_PROTOTYPE( int redisplay, (void) );
+_PROTOTYPE( void redisplay, (void) );
 _PROTOTYPE( int fupd_wind, (struct window *w) );
 _PROTOTYPE( int upd_curs, (chroff adot) );
 _PROTOTYPE( int d_line, (chroff cdot) );
@@ -88,15 +88,15 @@ _PROTOTYPE( int inwinp, (struct window *win, chroff cdot) );
 _PROTOTYPE( int upd_wind, (struct window *win) );
 _PROTOTYPE( int slineq, (struct scr_line *olds, struct scr_line *news) );
 _PROTOTYPE( int upd_line, (int y) );
-_PROTOTYPE( int fillset, (char *str, int cnt, int c) );
-_PROTOTYPE( int fillsp, (char *str, int cnt) );
-_PROTOTYPE( int inspc, (char *cp0, char *cpl, int cnt) );
-_PROTOTYPE( int fix_line, (struct scr_line *slp, struct scr_line *olds) );
+_PROTOTYPE( void fillset, (char *str, int cnt, int c) );
+_PROTOTYPE( void fillsp, (char *str, int cnt) );
+_PROTOTYPE( void inspc, (char *cp0, char *cpl, int cnt) );
+_PROTOTYPE( void fix_line, (struct scr_line *slp, struct scr_line *olds) );
 _PROTOTYPE( int sctrin, (char *to, int lim, int ccol) );
 _PROTOTYPE( int inslin, (int line, int n, struct window *win) );
 _PROTOTYPE( int dellin, (int line, int n, struct window *win) );
 _PROTOTYPE( int t_dostandout, (int on) );
-_PROTOTYPE( int t_move, (int y, int x) );
+_PROTOTYPE( void t_move, (int y, int x) );
 _PROTOTYPE( int t_docleol, (void) );
 
 /* eeedit.c */
@@ -338,8 +338,8 @@ _PROTOTYPE( int doargs, (int argc, char **argv) );
 _PROTOTYPE( int initialize, (void) );
 _PROTOTYPE( int f_throw, (void) );
 _PROTOTYPE( int ring_bell, (void) );
-_PROTOTYPE( int f_retsup, (void) );
-_PROTOTYPE( int f_wfexit, (void) );
+_PROTOTYPE( void f_retsup, (void) );
+_PROTOTYPE( void f_wfexit, (void) );
 _PROTOTYPE( int f_pshinf, (void) );
 _PROTOTYPE( char *memalloc, (SBMO size) );
 _PROTOTYPE( int chkfree, (SBMA ptr) );
@@ -406,6 +406,7 @@ _PROTOTYPE( int lin_search, (int backwards) );
 _PROTOTYPE( int srchint, (void) );
 _PROTOTYPE( char *srch_ask, (char *prompt) );
 _PROTOTYPE( int f_risrch, (void) );
+_PROTOTYPE( int f_isrch, (void) );
 _PROTOTYPE( int i_search, (int back) );
 
 /* eeterm.c */

commands/elle/ellec.c

@@ -143,7 +143,7 @@ _PROTOTYPE(int ustrcmp , (char *s1 , char *s2 ));
 _PROTOTYPE(int strueq , (char *s1 , char *s2 ));
 _PROTOTYPE(int do_opcod , (void));
 _PROTOTYPE(int do_opasc , (void));
-_PROTOTYPE(int outkbind , (int c , int fx ));
+_PROTOTYPE(void outkbind , (int c , int fx ));
 _PROTOTYPE(int do_obprof , (void));
 _PROTOTYPE(int mupcase , (int ch ));
 _PROTOTYPE(int upcase , (int ch ));
@@ -156,7 +156,7 @@ _PROTOTYPE(int do_ofxcod , (void));
 _PROTOTYPE(int compile_stdin , (void));
 _PROTOTYPE(int lrch , (void));
 _PROTOTYPE(struct lnode *lread , (void));
-_PROTOTYPE(int wspfls , (void));
+_PROTOTYPE(void wspfls , (void));
 _PROTOTYPE(struct lnode *lrstr , (int flg ));
 _PROTOTYPE(int islword , (int c ));
 _PROTOTYPE(struct lnode *eval , (struct lnode *lp ));
@@ -561,7 +561,7 @@ do_opasc()
 		fatal("%d errors encountered, check output file.", oerrs);
 }
 
-outkbind(c, fx)
+void outkbind(c, fx)
 {
 	if(fx == 0)		/* Allow key to be mapped to nothing. */
 		return;
@@ -899,7 +899,7 @@ lread()
 	return(lrstr(0));
 }
 
-wspfls()
+void wspfls()
 {	register int c;
 	for(;;)
 	  {	c = lrch();

commands/fdisk/fdisk.c

@@ -86,14 +86,14 @@ _PROTOTYPE(int main, (int argc, char *argv []));
 _PROTOTYPE(void getgeom, (void));
 _PROTOTYPE(int getboot, (char *buffer));
 _PROTOTYPE(int putboot, (char *buffer));
-_PROTOTYPE(int load_from_file, (void));
-_PROTOTYPE(int save_to_file, (void));
+_PROTOTYPE(void load_from_file, (void));
+_PROTOTYPE(void save_to_file, (void));
 _PROTOTYPE(int dpl_partitions, (int rawflag));
 _PROTOTYPE(int chk_table, (void));
 _PROTOTYPE(int sec_to_hst, (long logsec, unsigned char *hd, unsigned char *sec,
 							 unsigned char *cyl));
 _PROTOTYPE(int mark_partition, (struct part_entry *pe));
-_PROTOTYPE(int change_partition, (struct part_entry *entry));
+_PROTOTYPE(void change_partition, (struct part_entry *entry));
 _PROTOTYPE(int get_a_char, (void));
 _PROTOTYPE(int print_menu, (void));
 _PROTOTYPE(void adj_base, (struct part_entry *pe));
@@ -292,7 +292,7 @@ char *buffer;
 #endif
 
 
-load_from_file()
+void load_from_file()
 {
 /* Load buffer from file  */
 
@@ -315,7 +315,7 @@ load_from_file()
 }
 
 
-save_to_file()
+void save_to_file()
 {
 /* Save to file  */
 
@@ -561,7 +561,7 @@ struct part_entry *pe;
   }
 }
 
-change_partition(entry)
+void change_partition(entry)
 struct part_entry *entry;
 {
 /* Get partition info : first & last cylinder */

commands/format/format.c

@@ -332,7 +332,7 @@ int main(int argc, char **argv)
 	type= fl_type(st.st_rdev);
 
 	/* The drive should not be mounted. */
-	if (load_mtab("mkfs") < 0) return;
+	if (load_mtab("mkfs") < 0) exit(1);
 
 	while (get_mtab_entry(special, mounted_on, version, rw_flag) == 0) {
 		if (stat(special, &st) >= 0 && isfloppy(st.st_rdev)

commands/talk/screen.c

@@ -186,7 +186,7 @@ char *p = &line[80];
 
    *p-- = '\0';
    getyx(w, r, c);
-   if(c == 0) return;
+   if(c == 0) return NULL;
    while(c >= 0) {
    	c--;
    	ch = mvwinch(w, r, c);