Re: [boost] Dropping C++03 support (again)

Matt Borland wrote:

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Maybe requiring support for all the language features or the standard library is not strictly necessary.

I would argue that it is necessary to strictly require full compliance with C++11. Invariably the libraries are going to have interdependencies, and strict compliance would give us a known lowest common denominator. Let’s say Boost.X uses GCC 4.8 and depends on Boost.Y which switches from Boost.TypeTraits to since it no longer has to support C++03. Now Boost.X either has to increase it’s minimum compiler version to GCC 5, or the maintainer of Boost.Y is hamstrung trying to support Boost.X.

That's not entirely true. is functional under GCC 4.8, it's only missing a handful of traits (is_trivially_*) and that's not hard to work around. https://github.com/boostorg/variant2/blob/95a8c5ffec407533893fa39900bc7799c2... 4.8 is not a C++11 compiler for other reasons though; its <regex> is completely broken. On the other hand, I'm not sure that <regex> can ever be considered not completely broken.