[Bug c/68612] Const-compatibility in C

["alexreg at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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

--- Comment #6 from Alexander Regueiro <alexreg at gmail dot com> ---
Thatâs good to know. Do we have a suitable developer to take on this project? I
would do it myself, but Iâm not really qualified enough.

I suppose trunk wonât be in bug-fixing mode too longâ

> On 1 Dec 2015, at 23:35, joseph at codesourcery dot com <gcc-bugzilla@gcc.gnu.org> wrote:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68612
> 
> --- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
> I'd consider this a reasonable extension (not suitable for adding while 
> trunk is in bug-fixing mode, of course) for default (non-pedantic) mode, 
> similar to the extension to use C++-like rules for arrays of qualified 
> type.  Similar to that, it requires a lot of care to make sure it doesn't 
> cause valid code to be rejected, as well as thorough testcases.
> 
> (To be clear, the C++ rule is not symmetric between const and other 
> qualifiers; it allows adding arbitrary qualifiers in certain places if 
> const is present at all levels of indirection beyond those where any 
> qualifiers are added.  For this purpose, in C, _Atomic should not be 
> considered a qualifier, and you'd need to think about how address space 
> qualifiers are involved.)
> 
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