yyprint does not work with glr-parser

[Csaba Raduly]

The C code generated from the following grammar will not compile,
because yytoknum is not defined when glr-parser is in use.

%{
// C header part
#include <stdio.h>

static int yylex();

#define YYERROR_VERBOSE

void yyerror(const char *s)
{
puts(s);
}

union YYSTYPE;
static void yyprint(FILE *file, int type, const YYSTYPE& value);
#define YYPRINT(f,t,v) yyprint(f,t,v)

//static int yytoknum[500] = {0};
// Hack to get it  compile
%}

%verbose
%glr-parser

%start GrammarRoot

%token foo
%token bar
%token baz

%union {
  int i;
  char *s;
}

%%

GrammarRoot:
foo
| bar
| baz
;

%%

int yylex()
{
  static int index = 0, tokens[] = { bar, -1 };
  return tokens[index++];
}

void yyprint(FILE *file, int type, const YYSTYPE& value)
{
  (void)value;
  fprintf(file, "printing type %3d", type);
  switch (type) {
  case foo:
  fputs(" foo", file);
  break;

  case bar:
  fputs(" bar", file);
  break;

  default:
  break;
  }
}

int main()
{
  yydebug = 1;
  return yyparse();
}


Discovered, with bison 2.3; verified present with bison 2.4.1

Csaba
-- 
Life is complex, with real and imaginary parts