[libcpp] Correctly define __cplusplus (PR libstdc++-v3/1773)

[Rainer Orth]

Jason Merrill <jason@redhat.com> writes:

> On 08/09/2011 09:14 AM, Marc Glisse wrote:
>> I don't think we should define the C++ 2011 value yet. In my opinion, we
>> should wait until:
>> 1) the standard is official
>> 2) gcc implements most of it: people will want to use __cplusplus as a
>> test to know if they can use C++0X features, not if the compiler does
>> some effort to implement half of them.
>
> I'm of two minds about this, but I see that clang and edg still use 199711L
> in C++0x mode, so let's stick with that for now.

Ok, I just wanted to bring it up.  I'll resubmit with the 201103L change
removed once the other patches (tm etc. mangling and libstdc++) are
resolved.

Thanks.
        Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University