std::messages::messages (3) Linux Manual Page

std::messages<CharT>::~messages – std::messages<CharT>::~messages

Synopsis

Defined in header <locale>

protected: ~messages();

Destructs a std::messages facet. This destructor is protected and virtual (due to base_class destructor being virtual). An object of type std::messages, 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::messages and implements a public destructor.

Example

// Run this code

#include <iostream>

#include <locale>

struct Destructible_messages : public std::messages<wchar_t>

{
    Destructible_messages(std::size_t refs = 0)
        : messages(refs)
    {
    }
    // note: the implicit destructor is public
};

int main()

{
    Destructible_messages dc;
    // std::messages<wchar_t> c;  // compile error: protected destructor
}