rem: assert( written = (Q_LONG)out.size() );
add: assert( written == (Q_LONG)out.size() );
context: void encode_decode_convenience_qba( bool encode, const Codec * codec,				    const QByteArray & infile_buffer,				    QFile & outfile ){  QByteArray out;  if ( encode )    out = codec->encode( infile_buffer, withCRLF );  else    out = codec->decode( infile_buffer, withCRLF );  if ( writing ) {    Q_LONG written = outfile.writeBlock( out );    assert( written = (Q_LONG)out.size() );  }}