# std::basic_ios<CharT,Traits>::set_rdbuf

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< cpp‎ | io‎ | basic ios

protected: void set_rdbuf( std::basic_streambuf <CharT,Traits>* sb ); |  |

Sets the associated stream buffer to `sb` without clearing the error state.

This member function is protected: it is called by the move constructors of the derived streams such as std::basic_ofstream or std::basic_istringstream, as the final step after constructing the base class and after moving the stream buffer: only the most derived stream class knows how to correctly move the stream buffer, but std::basic_ios needs to be made aware of the stream's new location so that its public member functions can access it.

### Parameters

sb | - | stream buffer to associate to

### Return value

(none)

### Exceptions

(none)

### Example

| This section is incomplete Reason: no example

### See also

rdbuf | manages associated stream buffer (public member function)

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