KakeyamaY

非型テンプレート引数を持たないような実装以外に、 [*Cpp17Allocator*](https://timsong-cpp.github.io/cppwp/allocator.requirements.general#18) の制約に基づいて適切な `typename Allocator::template rebind::other` を提供する方法もあると思われます。

```cpp #include using T = int&; void f(T&) { std::cout

It seems that ncurses, very common library, often provides `ncurses++.pc` or `ncurses++w.pc`, so we might be better to consider these `++` patterns; I guess.

https://github.com/suisen-cp/cp-library-cpp/blob/e3dd9ab9c3e4f452856880768cab5a4d37a447fa/library/datastructure/util/priority_sum.hpp#L32-L35 の `_rev_cmp(v, _head_k.top())` 部分、条件が逆なのでは (`_cmp(v, _head_k.top())` か `_rev_cmp(_head_k.top(), v)` が想定？)

It seems libgit2 suddenly moved `git_error_clear`'s declaration to another header in version 1.8 https://github.com/libgit2/libgit2/commit/f78ae89bf1800444257160ad6ca48a0cd95384ba and this might cause the error. PS: I found #920 exist later...