C<make translators> -Wwrite-strings clean

From: "Robin Barker" <Robin.Barker@npl.co.uk>
Message-ID: <46A0F33545E63740BC7563DE59CA9C6D09399C@exchsvr2.npl.ad.local>

p4raw-id: //depot/perl@32690

9 files changed, 65 insertions, 57 deletions

diff --git a/x2p/Makefile.SH b/x2p/Makefile.SH
index b4c305894c..ba56c49e7b 100755
--- a/x2p/Makefile.SH
+++ b/x2p/Makefile.SH
@@ -124,6 +124,9 @@ run_byacc:	FORCE
 	    -e 's/^yynewerror://' \
 	    -e 's/^    goto yynewerror;//' \
 	    -e 's|^static char yysccsid\(.*\)|/* static char yysccsid\1 */|' \
+	    -e 's/^\(char \*yyname\[\]\)/const \1/' \
+	    -e 's/^\(char \*yyrule\[\]\)/const \1/' \
+	    -e 's/^\(    register\) \(char \*yys;\)/\1 const \2/' \
 	    < y.tab.c > a2p.c
 
 FORCE:
diff --git a/x2p/a2p.c b/x2p/a2p.c
index 20e322765d..4186cdf19b 100644
--- a/x2p/a2p.c
+++ b/x2p/a2p.c
@@ -1984,7 +1984,7 @@ short yycheck[] = {                                      41,
 #endif
 #define YYMAXTOKEN 306
 #if YYDEBUG
-char *yyname[] = {
+const char *yyname[] = {
 "end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,"'%'",0,0,"'('","')'","'*'","'+'","','","'-'",0,"'/'",0,0,0,0,0,0,0,0,0,0,
 "':'","';'","'<'",0,"'>'","'?'",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
@@ -1999,7 +1999,7 @@ char *yyname[] = {
 "DELETE","ASGNOP","OROR","ANDAND","NUMBER","VAR","SUBSTR","INDEX","MATCHOP",
 "RELOP","OR","STRING","UMINUS","NOT","INCR","DECR","FIELD","VFIELD","SVFIELD",
 };
-char *yyrule[] = {
+const char *yyrule[] = {
 "$accept : program",
 "program : junk hunks",
 "begin : BEGIN '{' maybe states '}' junk",
@@ -2193,7 +2193,7 @@ yyparse(void)
 {
     register int yym, yyn, yystate;
 #if YYDEBUG
-    register char *yys;
+    register const char *yys;
 
     if ((yys = getenv("YYDEBUG")))
     {
diff --git a/x2p/a2p.h b/x2p/a2p.h
index db09edddfa..e38e2d2bb3 100644
--- a/x2p/a2p.h
+++ b/x2p/a2p.h
@@ -252,7 +252,7 @@ char *strcpy(), *strcat();
 #define OSTAR		88
 
 #ifdef DOINIT
-char *opname[] = {
+const char *opname[] = {
     "0",
     "PROG",
     "JUNK",
@@ -345,7 +345,7 @@ char *opname[] = {
     "89"
 };
 #else
-extern char *opname[];
+extern const char *opname[];
 #endif
 
 EXT int mop INIT(1);
@@ -370,8 +370,8 @@ typedef struct htbl HASH;
 
 /* A string is TRUE if not "" or "0". */
 #define True(val) (tmps = (val), (*tmps && !(*tmps == '0' && !tmps[1])))
-EXT char *Yes INIT("1");
-EXT char *No INIT("");
+EXT const char *Yes INIT("1");
+EXT const char *No INIT("");
 
 #define str_get(str) (Str = (str), (Str->str_pok ? Str->str_ptr : str_2ptr(Str)))
 EXT STR *Str;
@@ -397,8 +397,8 @@ void putone ( void );
 int rememberargs ( int arg );
 char * scannum ( char *s );
 char * scanpat ( char *s );
-int string ( char *ptr, int len );
-void yyerror ( char *s );
+int string ( const char *ptr, int len );
+void yyerror ( const char *s );
 int yylex ( void );
 
 EXT int line INIT(0);
diff --git a/x2p/a2py.c b/x2p/a2py.c
index df0a55cb21..b6497afdb1 100644
--- a/x2p/a2py.c
+++ b/x2p/a2py.c
@@ -18,8 +18,8 @@
 #endif
 #include "util.h"
 
-char *filename;
-char *myname;
+const char *filename;
+const char *myname;
 
 int checkers = 0;
 
@@ -59,7 +59,7 @@ usage()
 #endif
 
 int
-main(register int argc, register char **argv, register char **env)
+main(register int argc, register const char **argv, register const char **env)
 {
     register STR *str;
     int i;
@@ -126,7 +126,6 @@ main(register int argc, register char **argv, register char **env)
     }
     filename = savestr(argv[0]);
 
-    filename = savestr(argv[0]);
     if (strEQ(filename,"-"))
 	argv[0] = "";
     if (!*argv[0])
@@ -562,7 +561,7 @@ yylex(void)
 	else if (strEQ(d,"function"))
 	    XTERM(FUNCTION);
 	if (strEQ(d,"FILENAME"))
-	    d = "ARGV";
+	    ID("ARGV");
 	if (strEQ(d,"foreach"))
 	    *d = toUPPER(*d);
 	else if (strEQ(d,"format"))
@@ -666,14 +665,14 @@ yylex(void)
 	SNARFWORD;
 	if (strEQ(d,"ORS")) {
 	    saw_ORS = TRUE;
-	    d = "\\";
+	    ID("\\");
 	}
 	if (strEQ(d,"OFS")) {
 	    saw_OFS = TRUE;
-	    d = ",";
+	    ID(",");
 	}
 	if (strEQ(d,"OFMT")) {
-	    d = "#";
+	    ID("#");
 	}
 	if (strEQ(d,"open"))
 	    *d = toUPPER(*d);
@@ -701,8 +700,8 @@ yylex(void)
     case 'r': case 'R':
 	SNARFWORD;
 	if (strEQ(d,"RS")) {
-	    d = "/";
 	    saw_RS = TRUE;
+	    ID("/");
 	}
 	if (strEQ(d,"rand")) {
 	    yylval = ORAND;
@@ -743,7 +742,7 @@ yylex(void)
 	    XTERM(FUN1);
 	}
 	if (strEQ(d,"SUBSEP")) {
-	    d = ";";
+	    ID(";");
 	}
 	if (strEQ(d,"sin")) {
 	    yylval = OSIN;
@@ -878,7 +877,7 @@ scanpat(register char *s)
 }
 
 void
-yyerror(char *s)
+yyerror(const char *s)
 {
     fprintf(stderr,"%s in file %s at line %d\n",
       s,filename,line);
@@ -921,7 +920,7 @@ scannum(register char *s)
 }
 
 int
-string(char *ptr, int len)
+string(const char *ptr, int len)
 {
     int retval = mop;
 
diff --git a/x2p/str.c b/x2p/str.c
index 0b1c940167..3909f5bf2d 100644
--- a/x2p/str.c
+++ b/x2p/str.c
@@ -25,7 +25,7 @@ str_2ptr(register STR *str)
     register char *s;
 
     if (!str)
-	return "";
+	return (char *)"";	/* probably safe - won't be written to */
     GROWSTR(&(str->str_ptr), &(str->str_len), 24);
     s = str->str_ptr;
     if (str->str_nok) {
@@ -56,7 +56,7 @@ str_sset(STR *dstr, register STR *sstr)
 }
 
 void
-str_nset(register STR *str, register char *ptr, register int len)
+str_nset(register STR *str, register const char *ptr, register int len)
 {
     GROWSTR(&(str->str_ptr), &(str->str_len), len + 1);
     memcpy(str->str_ptr,ptr,len);
@@ -67,7 +67,7 @@ str_nset(register STR *str, register char *ptr, register int len)
 }
 
 void
-str_set(register STR *str, register char *ptr)
+str_set(register STR *str, register const char *ptr)
 {
     register int len;
 
@@ -82,7 +82,7 @@ str_set(register STR *str, register char *ptr)
 }
 
 void
-str_ncat(register STR *str, register char *ptr, register int len)
+str_ncat(register STR *str, register const char *ptr, register int len)
 {
     if (!(str->str_pok))
 	str_2ptr(str);
@@ -104,7 +104,7 @@ str_scat(STR *dstr, register STR *sstr)
 }
 
 void
-str_cat(register STR *str, register char *ptr)
+str_cat(register STR *str, register const char *ptr)
 {
     register int len;
 
@@ -250,7 +250,7 @@ thats_all_folks:
 }
 
 STR *
-str_make(char *s)
+str_make(const char *s)
 {
     register STR *str = str_new(0);
 
diff --git a/x2p/str.h b/x2p/str.h
index f5b590b9e9..98e354c3b4 100644
--- a/x2p/str.h
+++ b/x2p/str.h
@@ -29,15 +29,15 @@ EXT STR **tmps_list;
 EXT long tmps_max INIT(-1);
 
 char * str_2ptr ( STR *str );
-void str_cat ( STR *str, char *ptr );
+void str_cat ( STR *str, const char *ptr );
 void str_free ( STR *str );
 char * str_gets ( STR *str, FILE *fp );
 int str_len ( STR *str );
-STR * str_make ( char *s );
-void str_ncat ( STR *str, char *ptr, int len );
+STR * str_make ( const char *s );
+void str_ncat ( STR *str, const char *ptr, int len );
 STR * str_new ( int len );
-void str_nset ( STR *str, char *ptr, int len );
+void str_nset ( STR *str, const char *ptr, int len );
 void str_numset ( STR *str, double num );
 void str_scat ( STR *dstr, STR *sstr );
-void str_set ( STR *str, char *ptr );
+void str_set ( STR *str, const char *ptr );
 void str_sset ( STR *dstr, STR *sstr );
diff --git a/x2p/util.c b/x2p/util.c
index 6994e873f7..aff3f00873 100644
--- a/x2p/util.c
+++ b/x2p/util.c
@@ -119,9 +119,10 @@ cpy2(register char *to, register char *from, register int delim)
 /* return ptr to little string in big string, NULL if not found */
 
 char *
-instr(char *big, char *little)
+instr(char *big, const char *little)
 {
-    register char *t, *s, *x;
+    register char *t, *x;
+    register const char *s;
 
     for (t = big; *t; t++) {
 	for (x=t,s=little; *s; x++,s++) {
@@ -139,7 +140,7 @@ instr(char *big, char *little)
 /* copy a string to a safe spot */
 
 char *
-savestr(char *str)
+savestr(const char *str)
 {
     register char * const newaddr = (char *) safemalloc((MEM_SIZE)(strlen(str)+1));
 
diff --git a/x2p/util.h b/x2p/util.h
index 74341c2959..3330a60957 100644
--- a/x2p/util.h
+++ b/x2p/util.h
@@ -21,8 +21,8 @@
 char * cpy2 ( char *to, char *from, int delim );
 char * cpytill ( char *to, char *from, int delim );
 void growstr ( char **strptr, int *curlen, int newlen );
-char * instr ( char *big, char *little );
-char * savestr ( char *str );
+char * instr ( char *big, const char *little );
+char * savestr ( const char *str );
 void fatal ( const char *pat, ... );
 void warn  ( const char *pat, ... );
 int prewalk ( int numit, int level, int node, int *numericptr );
diff --git a/x2p/walk.c b/x2p/walk.c
index de1263fc16..cc9f8ac74c 100644
--- a/x2p/walk.c
+++ b/x2p/walk.c
@@ -19,9 +19,9 @@ bool saw_FNR = FALSE;
 bool saw_argv0 = FALSE;
 bool saw_fh = FALSE;
 int maxtmp = 0;
-char *lparen;
-char *rparen;
-char *limit;
+const char *lparen;
+const char *rparen;
+const char *limit;
 STR *subs;
 STR *curargs = Nullstr;
 
@@ -36,7 +36,7 @@ STR * walk ( int useval, int level, int node, int *numericptr, int minprec );
 #ifdef NETWARE
 char *savestr(char *str);
 char *cpytill(register char *to, register char *from, register int delim);
-char *instr(char *big, char *little);
+char *instr(char *big, const char *little);
 #endif
 
 STR *
@@ -838,7 +838,9 @@ sub Pick {\n\
 	len = type >> 8;
 	type &= 255;
 	tmp3str = str_new(0);
-	if (type == OSTR) {
+	{
+	  const char *s;
+	  if (type == OSTR) {
 	    tmp2str=walk(1,level,ops[ops[node+2].ival+1].ival,&numarg,P_MIN);
 	    for (t = tmp2str->str_ptr, d=tokenbuf; *t; d++,t++) {
 		if (*t == '&')
@@ -849,18 +851,19 @@ sub Pick {\n\
 	    }
 	    *d = '\0';
 	    str_set(tmp2str,tokenbuf);
-	    s = (char *) (gsub ? "/g" : "/");
-	}
-	else {
+	    s = (gsub ? "/g" : "/");
+	  }
+	  else {
 	    tmp2str=walk(1,level,ops[node+2].ival,&numarg,P_MIN);
 	    str_set(tmp3str,"($s_ = '\"'.(");
 	    str_scat(tmp3str,tmp2str);
 	    str_cat(tmp3str,").'\"') =~ s/&/\\$&/g, ");
 	    str_set(tmp2str,"eval $s_");
-	    s = (char *) (gsub ? "/ge" : "/e");
+	    s = (gsub ? "/ge" : "/e");
 	    i++;
+	  }
+	  str_cat(tmp2str,s);
 	}
-	str_cat(tmp2str,s);
 	type = ops[ops[node+1].ival].ival;
 	len = type >> 8;
 	type &= 255;
@@ -909,8 +912,9 @@ sub Pick {\n\
 	break;
     case OSTR:
 	tmpstr = walk(1,level,ops[node+1].ival,&numarg,P_MIN);
-	s = "'";
-	for (t = tmpstr->str_ptr, d=tokenbuf; *t; d++,t++) {
+	{
+	  const char *s = "'";
+	  for (t = tmpstr->str_ptr, d=tokenbuf; *t; d++,t++) {
 	    if (*t == '\'')
 		s = "\"";
 	    else if (*t == '\\') {
@@ -924,13 +928,14 @@ sub Pick {\n\
 		}
 	    }
 	    *d = *t + 128;
+	  }
+	  *d = '\0';
+	  str = str_new(0);
+	  str_set(str,s);
+	  str_cat(str,tokenbuf);
+	  str_free(tmpstr);
+	  str_cat(str,s);
 	}
-	*d = '\0';
-	str = str_new(0);
-	str_set(str,s);
-	str_cat(str,tokenbuf);
-	str_free(tmpstr);
-	str_cat(str,s);
 	break;
     case ODEFINED:
 	prec = P_UNI;
@@ -1208,7 +1213,7 @@ sub Pick {\n\
 	}
 	tmpstr = walk(1+(type==OPRINT),level,ops[node+1].ival,&numarg,P_MIN);
 	if (!*tmpstr->str_ptr && lval_field) {
-	    t = (char*)(saw_OFS ? "$," : "' '");
+	    const char *t = (saw_OFS ? "$," : "' '");
 	    if (split_to_array) {
 		sprintf(tokenbuf,"join(%s,@Fld)",t);
 		str_cat(tmpstr,tokenbuf);
@@ -1284,7 +1289,7 @@ sub Pick {\n\
 	    tmpstr = str_new(0);
 	if (!tmpstr->str_ptr || !*tmpstr->str_ptr) {
 	    if (lval_field) {
-		t = (char*)(saw_OFS ? "$," : "' '");
+		const char *t = (saw_OFS ? "$," : "' '");
 		if (split_to_array) {
 		    sprintf(tokenbuf,"join(%s,@Fld)",t);
 		    str_cat(tmpstr,tokenbuf);