Re: PATCH RFA: Permit attributes on labels in C++

[Jason Merrill <jason at redhat dot com>]

Ian Lance Taylor wrote:
> Note that I changed is_late_template_attribute to mark the unused
> attribute on a label as applying at template instantiation time.

I don't think that's necessary; the change to re-apply attributes in 
tsubst_expr does the trick.

> +	  if (!cp_parser_require (parser, CPP_SEMICOLON, "%<;%>"))
> +	    gcc_unreachable ();

This consumes the semicolon as part of the label, which breaks

{ label: __attribute ((unused)) ; }

Jason