Re: [PATCH] Fix building with yacc

[Joel Brobecker <brobecker at adacore dot com>]

Hi Mark,

> OpenBSD yacc doesn't use YYPRINT, so we end up with gcc complaining
> that c_print_token is defined but not used.  As far as I can determine
> YYPRINT is a bison-ism, so the diff below wraps c_print_token in
> #ifdef YYBISON.
> 
> ok?

I don't know bison much to really review the patch, but I think
that you meant c_print_token to remain static, right? (see below)
Aside from that, the change looks OK to me.

ChangeLog?

> diff --git a/gdb/c-exp.y b/gdb/c-exp.y
> index 277242e..b76a06b 100644
> --- a/gdb/c-exp.y
> +++ b/gdb/c-exp.y
> @@ -169,8 +169,10 @@ static struct stoken operator_stoken (const char *);
>  static void check_parameter_typelist (VEC (type_ptr) *);
>  static void write_destructor_name (struct stoken);
>  
> +#ifdef YYBISON
>  static void c_print_token (FILE *file, int type, YYSTYPE value);
>  #define YYPRINT(FILE, TYPE, VALUE) c_print_token (FILE, TYPE, VALUE)
> +#endif
>  %}
>  
>  %type <voidval> exp exp1 type_exp start variable qualified_name lcurly
> @@ -3201,10 +3203,12 @@ c_parse (void)
>    return result;
>  }
>  
> +#ifdef YYBISON
> +
>  /* This is called via the YYPRINT macro when parser debugging is
>     enabled.  It prints a token's value.  */
>  
> -static void
> +void
>  c_print_token (FILE *file, int type, YYSTYPE value)

I think this "static void" -> "void" will break our build.

>  {
>    switch (type)
> @@ -3255,6 +3259,8 @@ c_print_token (FILE *file, int type, YYSTYPE value)
>      }
>  }
>  
> +#endif
> +
>  void
>  yyerror (char *msg)
>  {

-- 
Joel