BTW: Is

if (x)
  int y;

intentionally allowed in C++? Is there a sensible use
case?

Best,
Martin

Am Dienstag, den 11.08.2020, 22:11 +0200 schrieb Martin Uecker:
>
> Am Dienstag, den 11.08.2020, 21:31 +0200 schrieb Bjarne Stroustrup:
> > What benefits was this supposed to give programmers?
>
> It actually saves me time when writing C, because currently
> have to recompile sometimes just to add a pointless
> null statements. It is one of the main annoyances
> when writing C.
>
> It is also difficult to explain to students
> why you can not place a label before a declaration or
> at the end of a block while it makes perfect sense
> to jump there.
>
> C++ allows placing labels in front of declarations,
> so the also improves compatibility.
>
> > Was the benefits worth the change to almost 50 years practice and
> > documentation worth it?
>
> There is hardly anything to change, as it is entirely
> backward compatible and simply removes an annoying
> corner case from the language.
>
> > Are the old corner cases worse than the new ones?
>
> In C, there a no corner case anymore. You can place a label
> everywhere you could place a statement.
>
>
> Best,
> Martin
>
>
> > On 8/11/2020 6:43 PM, Richard Smith via Liaison wrote:
> > > On Tue, 11 Aug 2020, 09:16 Uecker, Martin,
> > > <Martin.Uecker_at_med.uni-goettingen.de
> > > <mailto:Martin.Uecker_at_med.uni-goettingen.de>> wrote:
> > >
> > > Am Dienstag, den 11.08.2020, 09:04 -0700 schrieb Richard Smith:
> > > > On Mon, 10 Aug 2020, 23:37 Uecker, Martin via Liaison, <
> > > > liaison_at_lists.isocpp.org <mailto:liaison_at_lists.isocpp.org>> wrote:
> > > >
> > > > >
> > > > > Hi all,
> > > > >
> > > > > I recently proposed changes to the C grammar which got
> > > > > voted into C2X by WG14 (N2508, also see N2496).
> > > > >
> > > > > This allows placing of labels everywhere in a compound
> > > > > statement, even before declarations and at the end
> > > > > of a block, which was not possible in C so far.
> > > > >
> > > > > Example:
> > > > >
> > >     > > {
> > >     > > start:
> > >     > >   int i;
> > >     > > mid:
> > >     > >   int j;
> > >     > > end:
> > >     > > }
> > > > >