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Re: [C++ PATCH] Only allow __label__ at the beginning of compound statements as documented (PR c++/32121)
- From: Jakub Jelinek <jakub at redhat dot com>
- To: Andreas Schwab <schwab at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 27 Sep 2007 11:33:57 -0400
- Subject: Re: [C++ PATCH] Only allow __label__ at the beginning of compound statements as documented (PR c++/32121)
- References: <20070927140718.GS2625@devserv.devel.redhat.com> <je4phg41ug.fsf@sykes.suse.de>
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
On Thu, Sep 27, 2007 at 04:31:03PM +0200, Andreas Schwab wrote:
> Jakub Jelinek <jakub@redhat.com> writes:
>
> > --- gcc/cp/parser.c.jj 2007-09-14 11:54:32.000000000 +0200
> > +++ gcc/cp/parser.c 2007-09-27 15:56:24.000000000 +0200
> > @@ -6821,6 +6821,11 @@ cp_parser_expression_statement (cp_parse
> > compound-statement:
> > { statement-seq [opt] }
> >
> > + GNU extension:
> > +
> > + compound-statement:
> > + { label-declaration [opt] statement-seq [opt] }
>
> Minor nit: there can be several label declarations, but
> label-declaration can only produce one, so this should actually say
> label-declaration-seq.
So do I need to write:
/* Parse a compound-statement.
compound-statement:
{ statement-seq [opt] }
GNU extension:
compound-statement:
{ label-declaration-seq [opt] statement-seq [opt] }
label-declaration-seq:
label-declaration
label-declaration-seq label-declaration
Returns a tree representing the statement. */
or is it implicitly assumed in the comment grammar what *-seq
means?
Jakub