[Bug c/68612] Const-compatibility in C

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68612

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
From https://gcc.gnu.org/bugzilla/show_bug.cgi?id=17654#c7 :
That way at present is to use the C++ compiler, if you want the C++ 
const-correctness rules.  Such a change was proposed for C99 in 
<http://www.open-std.org/JTC1/SC22/WG14/www/docs/n754.htm>.  I do not know 
why it was not adopted although the impression I get is that it was 
proposed too late in the process and there wasn't enough time at the 
relevant meeting.  I would suggest it might be worth proposing such a 
change again when features for C1x are under consideration in some years' 
time; C++ provides the prior art.


So there are two points in this bug report.  One add the extension to GCC and
the other is fix the C standard.

We are not going to accept it as an extension I don't think though.  So you
should see what is going on the C standard side of things.