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Re: [PATCH v2] libstdc++: Add hexfloat/defaultfloat io manipulators.


> Thanks, I was wrong about that.
>
> Then I think we should just bite the bullet and provide the new
> behaviour. If we do have an abi_tag on those types in the next release
> then we can preserve the old behaviour in the old ABI and use the
> C++11 semantics for the abi_tagged type, which will be used for both
> C++03 and C++11 code. I am not too concerned that people who use a
> meaningless modifier in C++03 code get the C++11 behaviour. If they
> really want %g or %G then they shouldn't use fixed|scientific.

Does that mean abi_tag will be enabled with separate compiler flag /
define rather than checking against the __cplusplus value?


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