[PATCH] Another location_t cleanup

[Zack Weinberg]

Nathan Sidwell <nathan@codesourcery.com> writes:

> 	* c-parse.in (%union): Replace filename & lineno with location.
> 	(save_filename, save_lineno): Remove.
> 	(save_location): New.
> 	(fndef, old_style_parm_decls_1, lineno_datadecl, lineno_decl,
> 	nested_function, notype_nested_function, if_prefix, lineno_stmt,
> 	lineno_label, label): Adjust.

Looks good except for one thing:

>   /* The forced readahead in here is because we might be at the end of a
>      line, and the line and file won't be bumped until yylex absorbs the
> !    first token on the next line. Must be balanced with a call to unsave_loc */

What's this "unsave_loc"?  I can't find it either elsewhere in this
patch or anywhere in the source tree.

zw