protected: basic_streambuf(); | (1) | |
protected: basic_streambuf(const basic_streambuf& rhs); | (2) | (since C++11) |
1) Constructs the
basic_streambuf object, initializes the six pointer members (eback(), gptr(), egptr(), pbase(), pptr(), and epptr()) to null pointer values, and the locale member to std::locale(), a copy of the global C++ locale at the time of construction. 2) Constructs a copy of
rhs, initializing the six pointers and the locale object with the copies of the values held by rhs. Note that this is a shallow copy: the pointers of the newly-constructed basic_streambuf are pointing into the same character array as the pointers of rhs.Both constructors are protected, and are only called by the concrete streambuf classes, such as std::basic_filebuf, std::basic_stringbuf, or std::strstreambuf.
Parameters
| rhs | - | a streambuf object to copy |
Notes
Until C++11, it was unspecified whether basic_streambuf or any of its derived classes is CopyConstructible (LWG issue 421), and different C++ library implementations provided different options.
Example
See also
| constructs a basic_filebuf object (public member function of std::basic_filebuf) | |
| constructs a basic_stringbuf object (public member function of std::basic_stringbuf) | |
| constructs a strstreambuf object (public member function of std::strstreambuf) |
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