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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Mon, 28 Dec 2020 20:33:49 +0000
Message-ID: <CAH6eHdTp18kG26jVOk2cxtNd9C3CzZiqt8-PvOX=diOwJORq2g@mail.gmail.com>
Subject: Re: Should reinterpret_cast be constexpr?
To: Josh Marshall <joshua.r.marshall.1991@gmail.com>
Cc: "libstdc++" <libstdc++@gcc.gnu.org>
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On Mon, 28 Dec 2020 at 19:51, Josh Marshall via Libstdc++
<libstdc++@gcc.gnu.org> wrote:
>
> Hello all,
>
> From the test error `libstdc++-v3/include/bits/stl_vector.h:1837: error:
> 'reinterpret_cast' is not a constant expression` and the documentation at
> https://en.cppreference.com/w/cpp/language/reinterpret_cast , is
> `reinterpret_cast()` not constexpr in error?

No, it's not an error. reinterpret_cast is not allowed in constant expressions.