[patch] fix libstdc++/56278

[François Dumont]

Committed then.

2013-02-13  François Dumont  <fdumont@gcc.gnu.org>

     * include/bits/hashtable_policy.h (_Hash_code_base): Restore
     default constructor protected.
     * include/bits/hashtable.h: static assert that _Hash_code_base has
     a default constructor available through inheritance.


On 02/13/2013 12:36 PM, Jonathan Wakely wrote:
> On 13 February 2013 10:19, Paolo Carlini wrote:
>> On 02/12/2013 09:54 PM, François Dumont wrote:
>>>      Of course this is not mandatory but I think _Hash_code_base would be
>>> cleaner this way only exposing as public what is required by C++11. It can
>>> also wait for 4.9.
>> I like it. Thanks Francois. If Jon has no objections over the next day or
>> so, please go ahead.
> No objection, I agree it's suitable for 4.8 as it's refining my
> regression fix, but I don't think it really makes any difference.
> There is nothing required by C++11 for _Hash_code_base's constructors
> because it's an implementation detail, and the only way a user can
> tell the difference between a public and protected constructor is
> trying to construct _Hash_code_base directly, which is obviously
> unsupported.
>

-------------- next part --------------
A non-text attachment was scrubbed...
Name: hash_code_base.patch
Type: text/x-patch
Size: 2174 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/libstdc++/attachments/20130213/96ef7daf/attachment.bin>