std::ctype::ctype - cppreference.com ([original](https://en.cppreference.com/w/cpp/locale/ctype/ctype.html)) (raw)

| | | | | --------------------- | | | | protected: ~ctype(); | | |

Destructs a std::ctype facet. This destructor is protected and virtual (due to base class destructor being virtual). An object of type std::ctype, like most facets, can only be destroyed when the last std::locale object that implements this facet goes out of scope or if a user-defined class is derived from std::ctype and implements a public destructor.

[edit] Example

#include #include   struct Destructible_ctype : public std::ctype { Destructible_ctype(std::size_t refs = 0) : ctype(refs) {} // note: the implicit destructor is public };   int main() { Destructible_ctype dc; // std::ctype c; // compile error: protected destructor }