Re: [PATCH 5/9] build: reject C++ compilers that don't support std::vector::data

[Hans Åberg]

> On 17 Aug 2021, at 08:49, Akim Demaille <akim.demaille@gmail.com> wrote:
> 
> Hi Hans,
> 
>> Le 13 août 2021 à 09:52, Hans Åberg <haberg-1@telia.com> a écrit :
>> 
>>> On 13 Aug 2021, at 08:11, Akim Demaille <akim.demaille@gmail.com> wrote:
>>> 
>>>> Le 12 août 2021 à 10:40, Hans Åberg <haberg-1@telia.com> a écrit :
>>>> 
>>>> The member 'data' was introduced in C++11.
>>>> 
>>>> https://en.cppreference.com/w/cpp/container/vector/data
>>> 
>>> That page is exactly the one I looked at first to see that it's C++98, not 
>>> C++11.  Read the bottom of 
>>> <https://en.cppreference.com/w/cpp/container/vector>.
>> 
>> It is not in the C++98 ISO+IEC+14882-1998 standard (the PDF). In the C++11 
>> n3242 draft, in sec. 23.3.6.1 Class template vector overview, class vector 
>> has between sections "element access" and "modifiers" a section "data 
>> access" with
>> T* data() noexcept; const
>> T* data() const noexcept
>> and it is also in a C++ draft standard I made from sources in 2015.
>> 
>> So GCC is right on this one, and 4.2 is from 2007-2008, before C++11. You 
>> might try a later version with the -std=c++98 option to see what it does.
> 
> You need to read my answer, and the page it pointed you to.

But that is a proposal from 2004, does it mean it should be considered a part 
of C++98? —It would seem that once a standard has been official, it does not 
change. There is alos the C++03, but also that is earlier than that proposal.

https://cplusplus.github.io/LWG/issue464