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Removed TOKSIZ_MAX macro

It is removed because we already have other macro, IDENTSIZ, which should be
used instead of this other. IDENTSIZ is defined in sizes.h with other
ANSI-C implementation sizes or limits.

--- a/lex.c

+++ b/lex.c

@@ -7,17 +7,17 @@

 #include "cc.h"

 #include "tokens.h"

 #include "symbol.h"

+#include "sizes.h"

-

-static FILE *yyin;

 union yyval yyval;

-static unsigned char aheadtok = NOTOK;

 unsigned char yytoken;

-char yytext[TOKSIZ_MAX + 1];

+char yytext[IDENTSIZ + 1];

 unsigned linenum;

 unsigned columnum;

 const char *filename;

+static FILE *yyin;

+static unsigned char aheadtok = NOTOK;

 static char

 number(void)

@@ -25,11 +25,11 @@

 	register char *bp;

 	register char ch;

-	for (bp = yytext; bp < yytext + TOKSIZ_MAX; *bp++ = ch) {

+	for (bp = yytext; bp < yytext + IDENTSIZ; *bp++ = ch) {

 		if (!isdigit(ch = getc(yyin)))

 			break;

 	}

-	if (bp == yytext + TOKSIZ_MAX)

+	if (bp == yytext + IDENTSIZ)

 		error("identifier too long %s", yytext);

 	*bp = '\0';

 	ungetc(ch, yyin);

@@ -45,11 +45,11 @@

 	register char ch, *bp;

 	register struct symbol *sym;

-	for (bp = yytext; bp < yytext + TOKSIZ_MAX; *bp++ = ch) {

+	for (bp = yytext; bp < yytext + IDENTSIZ; *bp++ = ch) {

 		if (!isalnum(ch = getc(yyin)) && ch != '_')

 			break;

 	}

-	if (bp == yytext + TOKSIZ_MAX)

+	if (bp == yytext + IDENTSIZ)

 		error("identifier too long %s", yytext);

 	*bp = '\0';

 	ungetc(ch, yyin);

--- a/tokens.h

+++ b/tokens.h

@@ -2,9 +2,6 @@

 #define TOKENS_H

-

-#define TOKSIZ_MAX 21

-

 /* Don't change this codification because program used it!!! */

 enum tokens {

 	/* types */