On Tue, 17 Aug 2021 at 14:22, Hans Åberg <haberg-1_at_[hidden]> wrote:

>
> > On 17 Aug 2021, at 15:13, Edward Catmur <ecatmur_at_[hidden]> wrote:
> >
> > On Tue, 17 Aug 2021 at 14:02, Hans Åberg via Std-Discussion <
> std-discussion_at_[hidden]> wrote:
> >
> > > On 17 Aug 2021, at 11:23, Daniel Krügler <daniel.kruegler_at_[hidden]>
> wrote:
> > >
> > > Am Di., 17. Aug. 2021 um 10:48 Uhr schrieb Hans Åberg via
> > > Std-Discussion <std-discussion_at_[hidden]>:
> > >>
> > >> Which is the earliest C++ version of which vector::data should be
> considered a part? —It is not in the ISO+IEC+14882-1998 document, but there
> is a proposal from 2004 to add it.
> > >>
> > >> https://cplusplus.github.io/LWG/issue464
> > >
> > > It should be guaranteed to be specified in the C++11 standard, but the
> > > C++ committee has voted the above-mentioned issue into CD1 in 2008. So
> > > some vendors may have added this function even in C++03 mode (in case
> > > they have updated their library implementations), but you cannot rely
> > > on that.
> >
> > The issue is with GNU Bison that writes C++ parser files intended to
> compile with several C++ versions. Then GCC 4.2 from 2007-2008 has C++98,
> but does not have vector::data. Is that correct?
> >
> > That seems unlikely to be correct. godbolt.org does not have gcc 4.2,
> but it has gcc 4.1.2 (from 2006), and that has vector::data.
> >
> >
> https://github.com/gcc-mirror/gcc/commit/8b5f07a224611f7dcff90910b493b93c2ef0c6b8
> indicates that the earliest gcc release that contains it is gcc 4.1.0.
>
> It is the version supplied on MacOS. At some point gcc switched to point
> to their inhouse version of clang.
>

It's entirely possible that Apple shipped gcc 4.2 along with an older
version of libstdc++. You should probably check with them (i.e. Apple).