Removed deprecated 'register' storage class specifier.

clang-3.5.0 now complains about them: warning: 'register' storage class specifier is deprecated [-Wdeprecated-register]

14 files changed, 108 insertions, 108 deletions

diff --git a/doc/flex.texi b/doc/flex.texi
index 295c7f0..825add3 100644
--- a/doc/flex.texi
+++ b/doc/flex.texi
@@ -1404,7 +1404,7 @@ example, the following is one way to eat up C comments:
 @verbatim
     %%
     "/*"        {
-                register int c;
+                int c;
 
                 for ( ; ; )
                     {
diff --git a/examples/fastwc/mywc.c b/examples/fastwc/mywc.c
index 92e5a36..b07d5f0 100644
--- a/examples/fastwc/mywc.c
+++ b/examples/fastwc/mywc.c
@@ -5,7 +5,7 @@
 
 main()
 {
-	register int c, cc = 0, wc = 0, lc = 0;
+	int c, cc = 0, wc = 0, lc = 0;
 	FILE *f = stdin;
 
 	while ((c = getc(f)) != EOF) {
diff --git a/src/ccl.c b/src/ccl.c
index 8d66bb6..7b134af 100644
--- a/src/ccl.c
+++ b/src/ccl.c
@@ -92,13 +92,13 @@ void    ccladd (cclp, ch)
 
 static void    dump_cclp (FILE* file, int cclp)
 {
-	register int i;
+	int i;
 
 	putc ('[', file);
 
 	for (i = 0; i < csize; ++i) {
 		if (ccl_contains(cclp, i)){
-			register int start_char = i;
+			int start_char = i;
 
 			putc (' ', file);
 
@@ -244,13 +244,13 @@ void    list_character_set (file, cset)
      FILE   *file;
      int     cset[];
 {
-	register int i;
+	int i;
 
 	putc ('[', file);
 
 	for (i = 0; i < csize; ++i) {
 		if (cset[i]) {
-			register int start_char = i;
+			int start_char = i;
 
 			putc (' ', file);
 
diff --git a/src/dfa.c b/src/dfa.c
index b8b68eb..c16a010 100644
--- a/src/dfa.c
+++ b/src/dfa.c
@@ -101,12 +101,12 @@ void check_trailing_context (nfa_states, num_states, accset, nacc)
      int    *accset;
      int nacc;
 {
-	register int i, j;
+	int i, j;
 
 	for (i = 1; i <= num_states; ++i) {
 		int     ns = nfa_states[i];
-		register int type = state_type[ns];
-		register int ar = assoc_rule[ns];
+		int type = state_type[ns];
+		int ar = assoc_rule[ns];
 
 		if (type == STATE_NORMAL || rule_type[ar] != RULE_VARIABLE) {	/* do nothing */
 		}
@@ -141,14 +141,14 @@ void dump_associated_rules (file, ds)
      FILE   *file;
      int ds;
 {
-	register int i, j;
-	register int num_associated_rules = 0;
-	int     rule_set[MAX_ASSOC_RULES + 1];
-	int    *dset = dss[ds];
-	int     size = dfasiz[ds];
+	int i, j;
+	int num_associated_rules = 0;
+	int rule_set[MAX_ASSOC_RULES + 1];
+	int *dset = dss[ds];
+	int size = dfasiz[ds];
 
 	for (i = 1; i <= size; ++i) {
-		register int rule_num = rule_linenum[assoc_rule[dset[i]]];
+		int rule_num = rule_linenum[assoc_rule[dset[i]]];
 
 		for (j = 1; j <= num_associated_rules; ++j)
 			if (rule_num == rule_set[j])
@@ -191,8 +191,8 @@ void dump_transitions (file, state)
      FILE   *file;
      int state[];
 {
-	register int i, ec;
-	int     out_char_set[CSIZE];
+	int i, ec;
+	int out_char_set[CSIZE];
 
 	for (i = 0; i < csize; ++i) {
 		ec = ABS (ecgroup[i]);
@@ -238,7 +238,7 @@ void dump_transitions (file, state)
 int    *epsclosure (t, ns_addr, accset, nacc_addr, hv_addr)
      int    *t, *ns_addr, accset[], *nacc_addr, *hv_addr;
 {
-	register int stkpos, ns, tsp;
+	int     stkpos, ns, tsp;
 	int     numstates = *ns_addr, nacc, hashval, transsym, nfaccnum;
 	int     stkend, nstate;
 	static int did_stk_init = false, *stk;
@@ -823,9 +823,9 @@ void ntod ()
 int snstods (sns, numstates, accset, nacc, hashval, newds_addr)
      int sns[], numstates, accset[], nacc, hashval, *newds_addr;
 {
-	int     didsort = 0;
-	register int i, j;
-	int     newds, *oldsns;
+	int didsort = 0;
+	int i, j;
+	int newds, *oldsns;
 
 	for (i = 1; i <= lastdfa; ++i)
 		if (hashval == dhash[i]) {
diff --git a/src/ecs.c b/src/ecs.c
index 663266f..b206351 100644
--- a/src/ecs.c
+++ b/src/ecs.c
@@ -139,7 +139,7 @@ void    mkeccl (ccls, lenccl, fwd, bck, llsiz, NUL_mapping)
 
 		for (i = fwd[cclm]; i != NIL && i <= llsiz; i = fwd[i]) {	/* look for the symbol in the character class */
 			for (; j < lenccl; ++j) {
-				register int ccl_char;
+				int ccl_char;
 
 				if (NUL_mapping && ccls[j] == 0)
 					ccl_char = NUL_mapping;
diff --git a/src/flex.skl b/src/flex.skl
index 03a5e04..5188a5c 100644
--- a/src/flex.skl
+++ b/src/flex.skl
@@ -1281,9 +1281,9 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
  */
 YY_DECL
 {
-	register yy_state_type yy_current_state;
-	register char *yy_cp, *yy_bp;
-	register int yy_act;
+	yy_state_type yy_current_state;
+	char *yy_cp, *yy_bp;
+	int yy_act;
     M4_YY_DECL_GUTS_VAR();
 
 m4_ifdef( [[M4_YY_NOT_REENTRANT]],
@@ -1633,9 +1633,9 @@ int yyFlexLexer::yy_get_next_buffer()
 %endif
 {
     M4_YY_DECL_GUTS_VAR();
-	register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
-	register char *source = YY_G(yytext_ptr);
-	register int number_to_move, i;
+	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+	char *source = YY_G(yytext_ptr);
+	int number_to_move, i;
 	int ret_val;
 
 	if ( YY_G(yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[YY_G(yy_n_chars) + 1] )
@@ -1781,8 +1781,8 @@ m4_ifdef( [[M4_YY_USES_REJECT]],
     yy_state_type yyFlexLexer::yy_get_previous_state()
 %endif
 {
-	register yy_state_type yy_current_state;
-	register char *yy_cp;
+	yy_state_type yy_current_state;
+	char *yy_cp;
     M4_YY_DECL_GUTS_VAR();
 
 %% [15.0] code to get the start state into yy_current_state goes here
@@ -1808,7 +1808,7 @@ m4_ifdef( [[M4_YY_USES_REJECT]],
     yy_state_type yyFlexLexer::yy_try_NUL_trans( yy_state_type yy_current_state )
 %endif
 {
-	register int yy_is_jam;
+	int yy_is_jam;
     M4_YY_DECL_GUTS_VAR(); /* This var may be unused depending upon options. */
 %% [17.0] code to find the next state, and perhaps do backing up, goes here
 
@@ -1820,13 +1820,13 @@ m4_ifdef( [[M4_YY_USES_REJECT]],
 %if-c-only
 m4_ifdef( [[M4_YY_NO_UNPUT]],,
 [[
-    static void yyunput YYFARGS2( int,c, register char *,yy_bp)
+    static void yyunput YYFARGS2( int,c, char *,yy_bp)
 %endif
 %if-c++-only
-    void yyFlexLexer::yyunput( int c, register char* yy_bp)
+    void yyFlexLexer::yyunput( int c, char* yy_bp)
 %endif
 {
-	register char *yy_cp;
+	char *yy_cp;
     M4_YY_DECL_GUTS_VAR();
 
     yy_cp = YY_G(yy_c_buf_p);
@@ -1837,10 +1837,10 @@ m4_ifdef( [[M4_YY_NO_UNPUT]],,
 	if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
 		{ /* need to shift things up to make room */
 		/* +2 for EOB chars. */
-		register yy_size_t number_to_move = YY_G(yy_n_chars) + 2;
-		register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
+		yy_size_t number_to_move = YY_G(yy_n_chars) + 2;
+		char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
 					YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
-		register char *source =
+		char *source =
 				&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];
 
 		while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
@@ -2974,7 +2974,7 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 #ifndef yytext_ptr
 static void yy_flex_strncpy YYFARGS3( char*,s1, yyconst char *,s2, int,n)
 {
-	register int i;
+	int i;
 	for ( i = 0; i < n; ++i )
 		s1[i] = s2[i];
 }
@@ -2986,7 +2986,7 @@ m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
 #ifdef YY_NEED_STRLEN
 static int yy_flex_strlen YYFARGS1( yyconst char *,s)
 {
-	register int n;
+	int n;
 	for ( n = 0; s[n]; ++n )
 		;
 
diff --git a/src/flexdef.h b/src/flexdef.h
index 132812b..693f9f9 100644
--- a/src/flexdef.h
+++ b/src/flexdef.h
@@ -844,10 +844,10 @@ extern void action_define PROTO ((const char *defname, int value));
 extern void add_action PROTO ((const char *new_text));
 
 /* True if a string is all lower case. */
-extern int all_lower PROTO ((register char *));
+extern int all_lower PROTO ((char *));
 
 /* True if a string is all upper case. */
-extern int all_upper PROTO ((register char *));
+extern int all_upper PROTO ((char *));
 
 /* Compare two integers for use by qsort. */
 extern int intcmp PROTO ((const void *, const void *));
@@ -859,10 +859,10 @@ extern void check_char PROTO ((int c));
 extern Char clower PROTO ((int));
 
 /* Returns a dynamically allocated copy of a string. */
-extern char *copy_string PROTO ((register const char *));
+extern char *copy_string PROTO ((const char *));
 
 /* Returns a dynamically allocated copy of a (potentially) unsigned string. */
-extern Char *copy_unsigned_string PROTO ((register Char *));
+extern Char *copy_unsigned_string PROTO ((Char *));
 
 /* Compare two characters for use by qsort with '\0' sorting last. */
 extern int cclcmp PROTO ((const void *, const void *));
@@ -988,7 +988,7 @@ extern int link_machines PROTO ((int, int));
 /* Mark each "beginning" state in a machine as being a "normal" (i.e.,
  * not trailing context associated) state.
  */
-extern void mark_beginning_as_normal PROTO ((register int));
+extern void mark_beginning_as_normal PROTO ((int));
 
 /* Make a machine that branches to two machines. */
 extern int mkbranch PROTO ((int, int));
diff --git a/src/gen.c b/src/gen.c
index 8261951..68125d7 100644
--- a/src/gen.c
+++ b/src/gen.c
@@ -81,7 +81,7 @@ static const char *get_state_decl (void)
 
 void do_indent ()
 {
-	register int i = indent_level * 8;
+	int i = indent_level * 8;
 
 	while (i >= 8) {
 		outc ('\t');
@@ -201,7 +201,7 @@ void gen_bu_action ()
 
 static struct yytbl_data *mkctbl (void)
 {
-	register int i;
+	int i;
 	struct yytbl_data *tbl = 0;
 	flex_int32_t *tdata = 0, curr = 0;
 	int     end_of_buffer_action = num_rules + 1;
@@ -332,7 +332,7 @@ static struct yytbl_data *mkssltbl (void)
 
 void genctbl ()
 {
-	register int i;
+	int i;
 	int     end_of_buffer_action = num_rules + 1;
 
 	/* Table of verify for transition and offset to next state. */
@@ -433,7 +433,7 @@ void genctbl ()
 
 struct yytbl_data *mkecstbl (void)
 {
-	register int i;
+	int i;
 	struct yytbl_data *tbl = 0;
 	flex_int32_t *tdata = 0;
 
@@ -462,7 +462,7 @@ struct yytbl_data *mkecstbl (void)
 
 void genecs ()
 {
-	register int i, j;
+	int i, j;
 	int     numrows;
 
 	out_str_dec (get_int32_decl (), "yy_ec", csize);
@@ -637,7 +637,7 @@ void gen_find_action ()
 
 struct yytbl_data *mkftbl (void)
 {
-	register int i;
+	int i;
 	int     end_of_buffer_action = num_rules + 1;
 	struct yytbl_data *tbl;
 	flex_int32_t *tdata = 0;
@@ -654,7 +654,7 @@ struct yytbl_data *mkftbl (void)
 	dfaacc[end_of_buffer_state].dfaacc_state = end_of_buffer_action;
 
 	for (i = 1; i <= lastdfa; ++i) {
-		register int anum = dfaacc[i].dfaacc_state;
+		int anum = dfaacc[i].dfaacc_state;
 
 		tdata[i] = anum;
 
@@ -674,7 +674,7 @@ struct yytbl_data *mkftbl (void)
 
 void genftbl ()
 {
-	register int i;
+	int i;
 	int     end_of_buffer_action = num_rules + 1;
 
 	out_str_dec (long_align ? get_int32_decl () : get_int16_decl (),
@@ -683,7 +683,7 @@ void genftbl ()
 	dfaacc[end_of_buffer_state].dfaacc_state = end_of_buffer_action;
 
 	for (i = 1; i <= lastdfa; ++i) {
-		register int anum = dfaacc[i].dfaacc_state;
+		int anum = dfaacc[i].dfaacc_state;
 
 		mkdata (anum);
 
@@ -708,7 +708,7 @@ void genftbl ()
 void gen_next_compressed_state (char_map)
      char   *char_map;
 {
-	indent_put2s ("register YY_CHAR yy_c = %s;", char_map);
+	indent_put2s ("YY_CHAR yy_c = %s;", char_map);
 
 	/* Save the backing-up info \before/ computing the next state
 	 * because we always compute one more state than needed - we
@@ -794,8 +794,8 @@ void gen_next_match ()
 	else if (fullspd) {
 		indent_puts ("{");
 		indent_puts
-			("register yyconst struct yy_trans_info *yy_trans_info;\n");
-		indent_puts ("register YY_CHAR yy_c;\n");
+			("yyconst struct yy_trans_info *yy_trans_info;\n");
+		indent_puts ("YY_CHAR yy_c;\n");
 		indent_put2s ("for ( yy_c = %s;", char_map);
 		indent_puts
 			("      (yy_trans_info = &yy_current_state[(unsigned int) yy_c])->");
@@ -938,7 +938,7 @@ void gen_NUL_trans ()
 		/* We're going to need yy_cp lying around for the call
 		 * below to gen_backing_up().
 		 */
-		indent_puts ("register char *yy_cp = YY_G(yy_c_buf_p);");
+		indent_puts ("char *yy_cp = YY_G(yy_c_buf_p);");
 
 	outc ('\n');
 
@@ -959,10 +959,10 @@ void gen_NUL_trans ()
 
 	else if (fullspd) {
 		do_indent ();
-		out_dec ("register int yy_c = %d;\n", NUL_ec);
+		out_dec ("int yy_c = %d;\n", NUL_ec);
 
 		indent_puts
-			("register yyconst struct yy_trans_info *yy_trans_info;\n");
+			("yyconst struct yy_trans_info *yy_trans_info;\n");
 		indent_puts
 			("yy_trans_info = &yy_current_state[(unsigned int) yy_c];");
 		indent_puts ("yy_current_state += yy_trans_info->yy_nxt;");
@@ -1319,7 +1319,7 @@ void gentabs ()
 	yybase_curr = 1;
 
 	for (i = 1; i <= lastdfa; ++i) {
-		register int d = def[i];
+		int d = def[i];
 
 		if (base[i] == JAMSTATE)
 			base[i] = jambase;
@@ -1501,8 +1501,8 @@ void indent_puts (str)
 
 void make_tables ()
 {
-	register int i;
-	int     did_eof_rule = false;
+	int i;
+	int did_eof_rule = false;
 	struct yytbl_data *yynultrans_tbl;
 
 
diff --git a/src/misc.c b/src/misc.c
index cd88928..0dd8f50 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -168,7 +168,7 @@ void   *allocate_array (size, element_size)
      int size;
      size_t element_size;
 {
-	register void *mem;
+	void *mem;
 	size_t  num_bytes = element_size * size;
 
 	mem = flex_alloc (num_bytes);
@@ -183,7 +183,7 @@ void   *allocate_array (size, element_size)
 /* all_lower - true if a string is all lower-case */
 
 int all_lower (str)
-     register char *str;
+     char *str;
 {
 	while (*str) {
 		if (!isascii ((Char) * str) || !islower ((Char) * str))
@@ -198,7 +198,7 @@ int all_lower (str)
 /* all_upper - true if a string is all upper-case */
 
 int all_upper (str)
-     register char *str;
+     char *str;
 {
 	while (*str) {
 		if (!isascii ((Char) * str) || !isupper ((Char) * str))
@@ -241,7 +241,7 @@ void check_char (c)
 /* clower - replace upper-case letter to lower-case */
 
 Char clower (c)
-     register int c;
+     int c;
 {
 	return (Char) ((isascii (c) && isupper (c)) ? tolower (c) : c);
 }
@@ -250,10 +250,10 @@ Char clower (c)
 /* copy_string - returns a dynamically allocated copy of a string */
 
 char   *copy_string (str)
-     register const char *str;
+     const char *str;
 {
-	register const char *c1;
-	register char *c2;
+	const char *c1;
+	char *c2;
 	char   *copy;
 	unsigned int size;
 
@@ -278,9 +278,9 @@ char   *copy_string (str)
  */
 
 Char   *copy_unsigned_string (str)
-     register Char *str;
+     Char *str;
 {
-	register Char *c;
+	Char *c;
 	Char   *copy;
 
 	/* find length */
@@ -746,7 +746,7 @@ void out_m4_define (const char* def, const char* val)
  */
 
 char   *readable_form (c)
-     register int c;
+     int c;
 {
 	static char rform[20];
 
@@ -798,7 +798,7 @@ void   *reallocate_array (array, size, element_size)
      int size;
      size_t element_size;
 {
-	register void *new_array;
+	void *new_array;
 	size_t  num_bytes = element_size * size;
 
 	new_array = flex_realloc (array, num_bytes);
@@ -994,7 +994,7 @@ void zero_out (region_ptr, size_in_bytes)
      char   *region_ptr;
      size_t size_in_bytes;
 {
-	register char *rp, *rp_end;
+	char *rp, *rp_end;
 
 	rp = region_ptr;
 	rp_end = region_ptr + size_in_bytes;
diff --git a/src/nfa.c b/src/nfa.c
index 26b162c..e0c5d05 100644
--- a/src/nfa.c
+++ b/src/nfa.c
@@ -340,7 +340,7 @@ int     link_machines (first, last)
  */
 
 void    mark_beginning_as_normal (mach)
-     register int mach;
+     int mach;
 {
 	switch (state_type[mach]) {
 	case STATE_NORMAL:
diff --git a/src/parse.y b/src/parse.y
index bbc738c..d0cc706 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -953,7 +953,7 @@ string		:  string CHAR
 
 void build_eof_action()
 	{
-	register int i;
+	int i;
 	char action_text[MAXLINE];
 
 	for ( i = 1; i <= scon_stk_ptr; ++i )
diff --git a/src/scan.l b/src/scan.l
index 1bcb09b..5a15400 100644
--- a/src/scan.l
+++ b/src/scan.l
@@ -661,7 +661,7 @@ M4QEND      "]]"
      * context.
      */
 	"{"{NAME}"}"[[:space:]]?	 {
-			register Char *nmdefptr;
+			Char *nmdefptr;
             int end_is_ws, end_ch;
 
             end_ch = yytext[yyleng-1];
diff --git a/src/sym.c b/src/sym.c
index 8d0b2e9..232cd0a 100644
--- a/src/sym.c
+++ b/src/sym.c
@@ -59,12 +59,12 @@ static struct hash_entry *ccltab[CCL_HASH_SIZE];
 
 /* declare functions that have forward references */
 
-static int addsym PROTO ((register char[], char *, int, hash_table, int));
-static struct hash_entry *findsym PROTO ((register const char *sym,
+static int addsym PROTO ((char[], char *, int, hash_table, int));
+static struct hash_entry *findsym PROTO ((const char *sym,
 					  hash_table table,
 
 					  int table_size));
-static int hashfunct PROTO ((register const char *, int));
+static int hashfunct PROTO ((const char *, int));
 
 
 /* addsym - add symbol and definitions to symbol table
@@ -73,16 +73,16 @@ static int hashfunct PROTO ((register const char *, int));
  */
 
 static int addsym (sym, str_def, int_def, table, table_size)
-     register char sym[];
+     char sym[];
      char   *str_def;
      int     int_def;
      hash_table table;
      int     table_size;
 {
-	int     hash_val = hashfunct (sym, table_size);
-	register struct hash_entry *sym_entry = table[hash_val];
-	register struct hash_entry *new_entry;
-	register struct hash_entry *successor;
+	int    hash_val = hashfunct (sym, table_size);
+	struct hash_entry *sym_entry = table[hash_val];
+	struct hash_entry *new_entry;
+	struct hash_entry *successor;
 
 	while (sym_entry) {
 		if (!strcmp (sym, sym_entry->name)) {	/* entry already exists */
@@ -147,7 +147,7 @@ int     ccllookup (ccltxt)
 /* findsym - find symbol in symbol table */
 
 static struct hash_entry *findsym (sym, table, table_size)
-     register const char *sym;
+     const char *sym;
      hash_table table;
      int     table_size;
 {
@@ -155,7 +155,7 @@ static struct hash_entry *findsym (sym, table, table_size)
 		(struct hash_entry *) 0, (struct hash_entry *) 0,
 		(char *) 0, (char *) 0, 0,
 	};
-	register struct hash_entry *sym_entry =
+	struct hash_entry *sym_entry =
 
 		table[hashfunct (sym, table_size)];
 
@@ -171,11 +171,11 @@ static struct hash_entry *findsym (sym, table, table_size)
 /* hashfunct - compute the hash value for "str" and hash size "hash_size" */
 
 static int hashfunct (str, hash_size)
-     register const char *str;
+     const char *str;
      int     hash_size;
 {
-	register int hashval;
-	register int locstr;
+	int hashval;
+	int locstr;
 
 	hashval = 0;
 	locstr = 0;
diff --git a/src/tblcmp.c b/src/tblcmp.c
index a56aaab..0c058e6 100644
--- a/src/tblcmp.c
+++ b/src/tblcmp.c
@@ -36,7 +36,7 @@
 
 /* declarations for functions that have forward references */
 
-void mkentry PROTO ((register int *, int, int, int, int));
+void mkentry PROTO ((int *, int, int, int, int));
 void mkprot PROTO ((int[], int, int));
 void mktemplate PROTO ((int[], int, int));
 void mv2front PROTO ((int));
@@ -223,9 +223,9 @@ void    bldtbl (state, statenum, totaltrans, comstate, comfreq)
 
 void    cmptmps ()
 {
-	int     tmpstorage[CSIZE + 1];
-	register int *tmp = tmpstorage, i, j;
-	int     totaltrans, trans;
+	int tmpstorage[CSIZE + 1];
+	int *tmp = tmpstorage, i, j;
+	int totaltrans, trans;
 
 	peakpairs = numtemps * numecs + tblend;
 
@@ -291,7 +291,7 @@ void    cmptmps ()
 
 void    expand_nxt_chk ()
 {
-	register int old_max = current_max_xpairs;
+	int old_max = current_max_xpairs;
 
 	current_max_xpairs += MAX_XPAIRS_INCREMENT;
 
@@ -330,9 +330,9 @@ int     find_table_space (state, numtrans)
 	/* Firstfree is the position of the first possible occurrence of two
 	 * consecutive unused records in the chk and nxt arrays.
 	 */
-	register int i;
-	register int *state_ptr, *chk_ptr;
-	register int *ptr_to_last_entry_in_state;
+	int i;
+	int *state_ptr, *chk_ptr;
+	int *ptr_to_last_entry_in_state;
 
 	/* If there are too many out-transitions, put the state at the end of
 	 * nxt and chk.
@@ -421,7 +421,7 @@ int     find_table_space (state, numtrans)
  */
 void    inittbl ()
 {
-	register int i;
+	int i;
 
 	zero_out ((char *) chk,
 
@@ -501,11 +501,11 @@ void    mkdeftbl ()
  */
 
 void    mkentry (state, numchars, statenum, deflink, totaltrans)
-     register int *state;
-     int     numchars, statenum, deflink, totaltrans;
+     int *state;
+     int numchars, statenum, deflink, totaltrans;
 {
-	register int minec, maxec, i, baseaddr;
-	int     tblbase, tbllast;
+	int minec, maxec, i, baseaddr;
+	int tblbase, tbllast;
 
 	if (totaltrans == 0) {	/* there are no out-transitions */
 		if (deflink == JAMSTATE)
@@ -762,9 +762,9 @@ void    mv2front (qelm)
 void    place_state (state, statenum, transnum)
      int    *state, statenum, transnum;
 {
-	register int i;
-	register int *state_ptr;
-	int     position = find_table_space (state, transnum);
+	int i;
+	int *state_ptr;
+	int position = find_table_space (state, transnum);
 
 	/* "base" is the table of start positions. */
 	base[statenum] = position;
@@ -835,8 +835,8 @@ void    stack1 (statenum, sym, nextstate, deflink)
 int     tbldiff (state, pr, ext)
      int     state[], pr, ext[];
 {
-	register int i, *sp = state, *ep = ext, *protp;
-	register int numdiff = 0;
+	int i, *sp = state, *ep = ext, *protp;
+	int numdiff = 0;
 
 	protp = &protsave[numecs * (pr - 1)];