Re: webkit will not build with bison 2.4

[Joel E. Denny]

On Tue, 18 Nov 2008, George Sherwood wrote:

> > I have reported a bug with the webkit developers, but thought maybe
> > you would have a fix, so I can continue building webkit nightly
> > builds and have bison 2.4 installed.  Webkit build fine with bison
> > 2.3.
> > 
> > It fails very early in the build with this error:

> > WebCore/css/CSSGrammar.y:348.11-20: symbol maybe_sgml redefined make:

> 334 maybe_sgml:
> 335     /* empty */
> 336   | maybe_sgml SGML_CD
> 337   | maybe_sgml WHITESPACE
> 338   ;

> 346 closing_brace:
> 347     '}'
> 348   | %prec maybe_sgml TOKEN_EOF
> 349   ;

The argument of %prec must be a token.  maybe_sgml is a nonterminal.  
Bison 2.3 ignored this error.  Bison 2.3b and later complain about it.

I can't tell for sure what the webkit developers intended here, but 
removing maybe_sgml from line 348 should make Bison stop complaining.