X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/4a2a22f4c0b1ce06a0a473038436bd8a8116b2aa..c0ad8bf3c2fb46f001bb24ac98a72b8bfb3a77ce:/data/yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index eed1a8a1..daa08d60 100644
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -358,12 +358,14 @@ static const char *const yytname[[]] =
 };
 #endif
 
+# ifdef YYPRINT
 /* YYTOKNUM[[YYLEX-NUM]] -- Internal token number corresponding to
    token YYLEX-NUM.  */
 static const b4_int_type_for([b4_toknum]) yytoknum[[]] =
 {
   b4_toknum
 };
+# endif
 
 /* YYR1[[YYN]] -- Symbol number of symbol that rule YYN derives.  */
 static const b4_int_type_for([b4_r1]) yyr1[[]] =
@@ -650,7 +652,7 @@ b4_c_function([yyreport_parse_error],
 	      [[int],     [yystate]],
 	      [[int],     [yychar]],
 	      [[YYSTYPE], [yyvalue]]b4_location_if([,
-	      [[YYLTYPE], [yylocation]]]))
+	      [[YYLTYPE], [yylloc]]]))
 [{
 #if YYERROR_VERBOSE
   int yyn = yypact[yystate];
@@ -667,7 +669,7 @@ b4_c_function([yyreport_parse_error],
 	 YYCHECK.  */
       for (yyx = yyn < 0 ? -yyn : 0;
 	   yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
-	if (yycheck[yyx + yyn] == yyx)
+	if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
 	  yysize += yystrlen (yytname[yyx]) + 15, yycount++;
       yysize += yystrlen ("parse error, unexpected ") + 1;
       yysize += yystrlen (yytname[yytype]);
@@ -683,7 +685,7 @@ b4_c_function([yyreport_parse_error],
 	      for (yyx = yyn < 0 ? -yyn : 0;
 		   yyx < (int) (sizeof (yytname) / sizeof (char *));
 		   yyx++)
-		if (yycheck[yyx + yyn] == yyx)
+		if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
 		  {
 		    const char *yyq = ! yycount ? ", expecting " : " or ";
 		    yyp = yystpcpy (yyp, yyq);
@@ -705,7 +707,7 @@ b4_c_function([yyreport_parse_error],
   (void) yystate;
   (void) yychar;
   (void) yyvalue;
-  ]b4_location_if([(void) yylocation;])[
+  ]b4_location_if([(void) yylloc;])[
 }]
 
 
@@ -1044,8 +1046,8 @@ yyreduce:
   /* If YYLEN is nonzero, implement the default value of the action:
      `$$ = $1'.
 
-     Otherwise, the following line sets YYVAL to the semantic value of
-     the lookahead token.  This behavior is undocumented and Bison
+     Otherwise, the following line sets YYVAL to garbage.
+     This behavior is undocumented and Bison
      users should not rely upon it.  Assigning to YYVAL
      unconditionally makes the parser a bit smaller, and it avoids a
      GCC warning that YYVAL may be used uninitialized.  */