Re: Pre-C++14 compilers

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2024-03-26 12:56:39

On 3/26/24 15:46, Peter Dimov via Boost wrote:
> René Ferdinand Rivera Morell wrote:
>> On Tue, Mar 26, 2024 at 7:29 AM Дмитрий Архипов via Boost
>> <boost_at_[hidden]> wrote:
>>>
>>> Recently we stopped supporting C++03. Now, the only compilers which
>>> support C++11, but do not claim some support of C++14 (that I am aware
>>> of) are GCC versions 4.8 and 4.9. But even C++11 support in those GCC
>>> versions is fairly buggy and those who still test on them often have
>>> to resort to various tricks to make their code build. Those compilers
>>> are fairly old, and the systems that use them increasingly go extinct.
>>> This makes me consider removing them from CI. Which is why I want to
>>> ask the community several questions:
>>>
>>> 1) Do you still use GCC 4.8 or 4.9?
>>> 2) If you do, is there a specific date when you plan to drop them?
>>> 2) Do you use some other compiler which supports C++11, but not C++14
>>> (even with flags like -std=c++1y)?
>>
>> The first two questions from
>> <https://www.jetbrains.com/lp/devecosystem-2023/cpp/> should answer
>> your questions.
> 
> They don't, as it's still possible to use C++11 with GCC 5 and above.
> 
> In this specific case Boost.Charconv supports C++11, but GCC 5 and above,
> whereas Boost.JSON supports GCC 4.8 and 4.9. So it's not possible to use
> Charconv from JSON unless support for 4.x (but not necessarily C++11) is
> dropped.

My understanding of the original post is that dropping C++11 is what's
desired, and dropping the older compilers is a side effect of that.
Hence the third question.