Clean up various compile warnings

Most of them were harmless: gcc not being smart enough to realize that
an uninitialized variable was never used if it wasn't initialized etc.

Some of them were name clashes ("crypt()" is a standard library
function, so rename it to "myencrypt()") etc.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

ansi.c

@@ -252,7 +252,7 @@ int f, n;			/* default flag, numeric argument [unused] */
 }
 #endif
 #else
-static void ansihello(void)
+void ansihello(void)
 {
 }
 #endif

bind.c

@@ -19,7 +19,7 @@ int help(int f, int n)
 				   into it with view mode                 */
 	register window_t *wp;	/* scaning pointer to windows */
 	register BUFFER *bp;	/* buffer pointer to help */
-	char *fname;		/* ptr to file returned by flook() */
+	char *fname = NULL;	/* ptr to file returned by flook() */
 
 	/* first check if we are already here */
 	bp = bfind("emacs.hlp", FALSE, BFINVS);

crypt.c

@@ -20,7 +20,7 @@ static int mod95(int);
  * int f;		default flag
  * int n;		numeric argument
  */
-int setkey(int f, int n)
+int set_encryption_key(int f, int n)
 {
 	register int status;	/* return status */
 	int odisinp;		/* original vlaue of disinp */
@@ -37,8 +37,8 @@ int setkey(int f, int n)
 		return (status);
 
 	/* and encrypt it */
-	crypt((char *) NULL, 0);
+	myencrypt((char *) NULL, 0);
-	crypt(key, strlen(key));
+	myencrypt(key, strlen(key));
 
 	/* and save it off */
 	strcpy(curbp->b_key, key);
@@ -48,7 +48,7 @@ int setkey(int f, int n)
 
 /**********
  *
- *	crypt - in place encryption/decryption of a buffer
+ *	myencrypt - in place encryption/decryption of a buffer
  *
  *	(C) Copyright 1986, Dana L. Hoggatt
  *	1216, Beck Lane, Lafayette, IN
@@ -77,7 +77,7 @@ int setkey(int f, int n)
  *	    4.	The system needed to be secure against all but the
  *		most determined of attackers.
  *
- *	For encryption of a block of data, one calls crypt passing 
+ *	For encryption of a block of data, one calls myencrypt passing 
  *	a pointer to the data block and its length. The data block is 
  *	encrypted in place, that is, the encrypted output overwrites 
  *	the input.  Decryption is totally isomorphic, and is performed 
@@ -86,9 +86,9 @@ int setkey(int f, int n)
  *	Before using this routine for encrypting data, you are expected 
  *	to specify an encryption key.  This key is an arbitrary string,
  *	to be supplied by the user.  To set the key takes two calls to 
- *	crypt().  First, you call 
+ *	myencrypt().  First, you call 
  *
- *		crypt(NULL, vector)
+ *		myencrypt(NULL, vector)
  *
  *	This resets all internal control information.  Typically (and 
  *	specifically in the case on MICRO-emacs) you would use a "vector" 
@@ -99,9 +99,9 @@ int setkey(int f, int n)
  *
  *	Then, you "encrypt" your password by calling 
  *
- *		crypt(pass, strlen(pass))
+ *		myencrypt(pass, strlen(pass))
  *
- *	where "pass" is your password string.  Crypt() will destroy 
+ *	where "pass" is your password string.  Myencrypt() will destroy 
  *	the original copy of the password (it becomes encrypted), 
  *	which is good.  You do not want someone on a multiuser system 
  *	to peruse your memory space and bump into your password.  
@@ -143,7 +143,7 @@ int setkey(int f, int n)
  *
  **********/
 
-void crypt(char *bptr, unsigned len)
+void myencrypt(char *bptr, unsigned len)
 {
 	register int cc;	/* current character being considered */
 
@@ -217,7 +217,7 @@ static int mod95(int val)
 	return (val);
 }
 #else
-static void nocrypt(void)
+static void myennocrypt(void)
 {
 }
 #endif

ebind.h

@@ -248,7 +248,7 @@ KEYTAB keytab[NBINDS] = {
 	{META | 'D', delfword}
 	,
 #if	CRYPT
-	{META | 'E', setkey}
+	{META | 'E', set_encryption_key}
 	,
 #endif
 	{META | 'F', forwword}

efunc.h

@@ -225,7 +225,6 @@ extern int fileread(int f, int n);
 extern int insfile(int f, int n);
 extern int filefind(int f, int n);
 extern int viewfile(int f, int n);
-extern int resetkey(void);
 extern int getfile(char *fname, int lockfl);
 extern int readin(char *fname, int lockfl);
 extern void makename(char *bname, char *fname);
@@ -365,8 +364,8 @@ extern int sindex(char *source, char *pattern);
 extern char *xlat(char *source, char *lookup, char *trans);
 
 /* crypt.c */
-extern int setkey(int f, int n);
+extern int set_encryption_key(int f, int n);
-extern void crypt(char *bptr, unsigned len);
+extern void myencrypt(char *bptr, unsigned len);
 
 /* lock.c */
 extern int lockchk(char *fname);

eval.c

@@ -448,10 +448,12 @@ int setvar(int f, int n)
  */
 void findvar(char *var, VDESC *vd, int size)
 {
-	register int vnum;	/* subscript in varable arrays */
+	register int vnum;	/* subscript in variable arrays */
 	register int vtype;	/* type to return */
 
-      fvar:vtype = -1;
+	vnum = -1;
+fvar:
+      	vtype = -1;
 	switch (var[0]) {
 
 	case '$':		/* check for legal enviromnent var */

file.c

@@ -101,7 +101,7 @@ int viewfile(int f, int n)
 }
 
 #if	CRYPT
-int resetkey(void)
+static int resetkey(void)
 {				/* reset the encryption key if needed */
 	register int s;		/* return status */
 
@@ -111,7 +111,7 @@ int resetkey(void)
 	/* if we are in crypt mode */
 	if (curbp->b_mode & MDCRYPT) {
 		if (curbp->b_key[0] == 0) {
-			s = setkey(FALSE, 0);
+			s = set_encryption_key(FALSE, 0);
 			if (s != TRUE)
 				return (s);
 		}
@@ -121,12 +121,12 @@ int resetkey(void)
 
 		/* and set up the key to be used! */
 		/* de-encrypt it */
-		crypt((char *) NULL, 0);
+		myencrypt((char *) NULL, 0);
-		crypt(curbp->b_key, strlen(curbp->b_key));
+		myencrypt(curbp->b_key, strlen(curbp->b_key));
 
 		/* re-encrypt it...seeding it to start */
-		crypt((char *) NULL, 0);
+		myencrypt((char *) NULL, 0);
-		crypt(curbp->b_key, strlen(curbp->b_key));
+		myencrypt(curbp->b_key, strlen(curbp->b_key));
 	}
 
 	return (TRUE);

fileio.c

@@ -87,7 +87,7 @@ int ffputline(char *buf, int nbuf)
 	if (cryptflag) {
 		for (i = 0; i < nbuf; ++i) {
 			c = buf[i] & 0xff;
-			crypt(&c, 1);
+			myencrypt(&c, 1);
 			fputc(c, ffp);
 		}
 	} else
@@ -195,7 +195,7 @@ int ffgetline(void)
 	fline[i] = 0;
 #if	CRYPT
 	if (cryptflag)
-		crypt(fline, strlen(fline));
+		myencrypt(fline, strlen(fline));
 #endif
 	return (FIOSUC);
 }

ibmpc.c

@@ -502,7 +502,7 @@ int f, n;			/* default flag, numeric argument [unused] */
 }
 #endif
 #else
-static void ibmhello(void)
+void ibmhello(void)
 {
 }
 #endif

input.c

@@ -439,7 +439,7 @@ int getstring(char *prompt, char *buf, int nbuf, int eolchar)
 	register int c;
 	register int quotef;	/* are we quoting the next char? */
 #if	COMPLC
-	int ffile, ocpos, nskip, didtry = 0;
+	int ffile, ocpos, nskip = 0, didtry = 0;
 #if     MSDOS
 	struct ffblk ffblk;
 	char *fcp;

main.c

@@ -236,8 +236,8 @@ int main(int argc, char **argv)
 #if	CRYPT
 			if (cryptflag) {
 				bp->b_mode |= MDCRYPT;
-				crypt((char *) NULL, 0);
+				myencrypt((char *) NULL, 0);
-				crypt(ekey, strlen(ekey));
+				myencrypt(ekey, strlen(ekey));
 				strncpy(bp->b_key, ekey, NPAT);
 			}
 #endif

makefile

@@ -20,7 +20,7 @@ CFLAGS=-O2 -Wall
 #CFLAGS= -D_HPUX_SOURCE -DSYSV
 #CFLAGS=-O4 -DSVR4		# Sun
 #CFLAGS=-O -qchars=signed	# RS/6000
-DEFINES=-DAUTOCONF -DPOSIX -DUSG	# Linux
+DEFINES=-DAUTOCONF -DPOSIX -DUSG -D_BSD_SOURCE -D_SVID_SOURCE -D_XOPEN_SOURCE=600	# Linux
 #DEFINES=-DAUTOCONF
 #LIBS=-ltermcap			# BSD
 #LIBS=-lcurses			# SYSV

names.c

@@ -191,7 +191,7 @@ NBIND names[] = {
 	{"select-buffer", usebuffer},
 	{"set", setvar},
 #if	CRYPT
-	{"set-encryption-key", setkey},
+	{"set-encryption-key", set_encryption_key},
 #endif
 	{"set-fill-column", setfillcol},
 	{"set-mark", setmark},

random.c

@@ -49,6 +49,9 @@ int showcpos(int f, int n)
 	/* start counting chars and lines */
 	numchars = 0;
 	numlines = 0;
+	predchars = 0;
+	predlines = 0;
+	curchar = 0;
 	while (lp != curbp->b_linep) {
 		/* if we are on the current line, record it */
 		if (lp == curwp->w_dotp) {

tcap.c

@@ -66,8 +66,10 @@ static char *UP, PC, *CM, *CE, *CL, *SO, *SE;
 
 #if	PKCODE
 static char *TI, *TE;
+#if USE_BROKEN_OPTIMIZATION
 static int term_init_ok = 0;
 #endif
+#endif
 
 #if     SCROLLCODE
 static char *CS, *DL, *AL, *SF, *SR;

vmsvt.c

@@ -518,7 +518,7 @@ spal()
  *
  *  Nothing returned
  ***/
-static void hellovms(void)
+void hellovms(void)
 {
 }
 

vt52.c

@@ -178,7 +178,7 @@ int f, n;			/* default flag, numeric argument [unused] */
 #endif
 #else
 
-static void vt52hello(void)
+void vt52hello(void)
 {
 }