std::mbstate_t
Min standard notice:
Header: <cuchar> (since C++17)
The type mbstate_t is a trivial non-array type that can represent any of the conversion states that can occur in an implementation-defined set of supported multibyte character encoding rules. Zero-initialized value of mbstate_t represents the initial conversion state, although other values of mbstate_t may exist that also represent the initial conversion state.
# Declarations
struct mbstate_t;