[Bug libstdc++/113811] std::rotate does 64-bit signed division

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113811

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
In case __n is the minimum signed integer and __k is -1 the division would also
trap ;)  So yes, they should be unsigned.