This paper is a small followup to [P3471R4 “Standard Library Hardening”](https://wg21.link/P3471R4) and [P3697R1 “Minor additions to C++26 standard library hardening”](https://wg21.link/P3697) that proposes adding several hardened preconditions across the Library. The unifying theme is in fact a lack of a unifying theme; these are “miscellaneous” checks that don’t fit into a larger category. This paper aims to work towards the goal of making sure the Library is exhaustively covered within the existing hardening paradigm.