[PATCH] [libstdc++] Remove unused hasher instance.

[Jonathan Wakely]

On Fri, 4 Jun 2021 at 20:54, Thomas Rodgers wrote:

> This is a remnant of poorly executed refactoring.
>

OK for trunk and gcc-11, thanks.



> libstdc++-v3/ChangeLog:
>
>         * include/std/barrier (__tree_barrier::_M_arrive): Remove
>         unnecessary hasher instantiation.
> ---
>  libstdc++-v3/include/std/barrier | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/libstdc++-v3/include/std/barrier
> b/libstdc++-v3/include/std/barrier
> index fd61fb4f9da..4210e30d1ce 100644
> --- a/libstdc++-v3/include/std/barrier
> +++ b/libstdc++-v3/include/std/barrier
> @@ -103,7 +103,6 @@ It looks different from literature pseudocode for two
> main reasons:
>                            static_cast<__barrier_phase_t>(__old_phase_val
> + 2);
>
>         size_t __current_expected = _M_expected;
> -       std::hash<std::thread::id> __hasher;
>         __current %= ((_M_expected + 1) >> 1);
>
>         for (int __round = 0; ; ++__round)
> --
> 2.26.2
>
>