[inline, protected, virtual]
Reads and returns the next character from the associated serial port if one otherwise returns traits::eof(). This method is used for unbuffered I/O while underflow() is called for unbuffered I/O.
Definition at line 564 of file SerialStreamBuf.h.
References mPutbackAvailable, and underflow().
int_type next_ch = underflow() ;
mPutbackAvailable = false ;
return next_ch ;