[PATCH v4] libstdc++: fix a dangling reference crash in ranges::is_permutation

[Jonathan Wakely]

On Thu, 6 Feb 2025 at 12:37, Giuseppe D'Angelo
<giuseppe.dangelo@kdab.com> wrote:
>
> Hello,
>
> On 23/12/2024 23:58, Giuseppe D'Angelo wrote:
> >>> +static_assert(test04);
> >> Missing (), otherwise LGTM!
> > D'oh. Fourth time the charm...
>
> Gentle ping on this thread, is the patch OK to be pushed or is it too
> risky for this stage?

I'll push it today, thanks for the ping.

We're a bit more cavalier about C++20/23/26 changes, because those
modes are still considered unstable and the default is still C++17.
And this fix seems correct and safe anyway.