[PATCH] libstdc++: Add include guard to simd-internal header

[Jonathan Wakely]

On Wed, 17 Apr 2024 at 09:17, Matthias Kretz <m.kretz@gsi.de> wrote:
>
> This never showed up as an issue because it's an internal header and
> implicitly guarded by bits/simd.h.
>
> OK for trunk? Any reason to backport?

OK for trunk, I think it's worth backporting too.


>
> --------------------- 8< ------------------
>
> Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
>
> libstdc++-v3/ChangeLog:
>
>         * include/experimental/bits/numeric_traits.h: Add include guard.
> ---
>  libstdc++-v3/include/experimental/bits/numeric_traits.h | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/libstdc++-v3/include/experimental/bits/numeric_traits.h b/
> libstdc++-v3/include/experimental/bits/numeric_traits.h
> index b195de7c3db..8717f684d96 100644
> --- a/libstdc++-v3/include/experimental/bits/numeric_traits.h
> +++ b/libstdc++-v3/include/experimental/bits/numeric_traits.h
> @@ -22,6 +22,9 @@
>  // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
>  // <http://www.gnu.org/licenses/>.
>
> +#ifndef _GLIBCXX_EXPERIMENTAL_BITS_NUMERIC_TRAITS_H
> +#define _GLIBCXX_EXPERIMENTAL_BITS_NUMERIC_TRAITS_H
> +
>  #include <type_traits>
>
>  namespace std {
> @@ -565,3 +568,4 @@ struct __has_iec559_behavior<__signaling_NaN, long
> double>
>  #endif // __FINITE_MATH_ONLY__
>
>  } // namespace std
> +#endif  // _GLIBCXX_EXPERIMENTAL_BITS_NUMERIC_TRAITS_H
> --
> ──────────────────────────────────────────────────────────────────────────
>  Dr. Matthias Kretz                           https://mattkretz.github.io
>  GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
>  stdₓ::simd
> ──────────────────────────────────────────────────────────────────────────
>