https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81806
--- Comment #5 from Oleksandr Kulkov <aleksandr.kulkov at phystech dot edu> --- Hi. I'm not Zlobober, I'm adamant. 1. At least, Jonathan suggested to start with fixing this in https://gcc.gnu.org/ml/libstdc++/2019-07/msg00066.html , so it doesn't seem hopeless for now 2. I'm not sure one really needs to remove it or make it a nop. Because order_statistics_node_update has order_of_key and find_by_order functions which are not necessary in other policy tags 3. Well, Jonathan dropped his suggestion to deprecate pbds in https://gcc.gnu.org/ml/libstdc++/2019-07/msg00071.html so probably we should presume pb_ds won't be immediately removed after fix 4. Even so is better than having it non-fixed or even deprecated forever
