Re: RFC: maint: c++: use nullptr for C++11

[Akim Demaille]

Le 30 mars 2012 à 20:15, Paul Eggert a écrit :

> Yes it does, but it's more complicated than that...
> Basically, any C implementation can put this into
> <stddef.h>, and it will conform to the standard:
> 
>   #define NULL 0
> 
> A C implementation is also allowed to put this into <stddef.h>:
> 
>   #define NULL ((void *) 0)
> 
> and this will also conform to C89 or later; but this latter
> approach is less portable to ancient compilers so for Bison
> plain 0 is probably better.

How about dropping K&R support in 2.6?  I can't even find a means
to check how Bison's generated code behaves with GCC which no
longer seems to support pre-ANSI C.

The Bison documentation is unclear about this too.

So I would suggest to display a big banner in 2.5.1's NEWS
stating that we will remove K&R support.