std::ios_base::ios_base

private:
ios_base( const ios_base& );

public:
ios_base( const ios_base& ) = delete;

protected:
ios_base();

Notes

The same applies to the constructors of the next class in the I/O hierarchy, std::basic_ios. Further-derived classes (std::istream and std::ostream) are always constructed with a concrete streambuffer object and call basic_ios::init(), possibly more than once, to complete initialization of their virtual base.

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.