Re: boost [math] excessive warnings via [lexical_cast] from [date_time] (and others) for clang 3.4?

From: John Maddock (jz.maddock_at_[hidden])
Date: 2020-03-24 17:41:40

On 24/03/2020 17:32, Jeff Garland via Boost wrote:
>>    Well it will be a real issue in a year from now when we being removing
>> C++03 support - it may be that lexical_cast's dependencies have nothing
>> that will actually break (but I would need to check that), or that as a
>>
> it's basically using it for floating point traits and functions like
> changesign.
>
> lexical_cast/detail/if_nan.hpp
> #include <boost/math/special_functions/sign.hpp>
> #include <boost/math/special_functions/fpclassify.hpp>
Nod.  And there's nothing in there that requires anything other than 
C++03, so I could fix this up to not issue the warnings if that's really 
required.
>
>
>> Question: will anyone care about clang-3.4 a year from now given that
>> we're currently on clang-9 ?
>
> I'd be fine if the answer is to drop really old compilers -- who makes that
> decision these days, the steering committee?

Not sure, but there was a message thread a while back to the effect that 
dropping C++03 support was OK as long as there was 12 months of 
deprecation first.

John.

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