510     size_t bytesread, buffersize, chunksize;  in BZ2File_read()  local
551     bytesread = 0;  in BZ2File_read()
556                                          BUF(ret)+bytesread,  in BZ2File_read()
557                                          buffersize-bytesread,  in BZ2File_read()
561         bytesread += chunksize;  in BZ2File_read()
580     if (bytesread != buffersize)  in BZ2File_read()
581         _PyString_Resize(&ret, bytesread);  in BZ2File_read()
1020     Py_off_t bytesread = 0;  in BZ2File_seek()  local
1067                 bytesread += chunksize;  in BZ2File_seek()
1077             bytesread = 0;  in BZ2File_seek()
1124         if (offset-bytesread > buffersize)  in BZ2File_seek()
1130             readsize = (size_t)(offset-bytesread);  in BZ2File_seek()
1136         bytesread += chunksize;  in BZ2File_seek()
1145         if (bytesread == offset)  in BZ2File_seek()