On Thu, 7 Oct 2021 at 15:02, Jonathan Wakely wrote:
>
> The solution is simple:
>
>     erase_if(set<_Key, _Compare, _Alloc>& __cont, _Predicate __pred)
> -    { return __detail::__erase_nodes_if(__cont, __pred); }
> +    {
> +      _GLIBCXX_STD_C::set<_Key, _Compare, _Alloc>& __c = __cont;
> +      return __detail::__erase_nodes_if(__c, __pred);
> +    }
>
>
> i.e. just bind a reference to the non-debug container type. For
> non-debug mode, that is a no-op. For debug mode it binds to the base,
> and the rest of the function works directly on the base, without safe
> iterators.
>
> I'm testing the patch now.

Tested on powerpc64le-linux and pushed to trunk now.