253     if (top >= bot || bot > curbuf->b_ml.ml_line_count + 1)  in u_save()
306 		     nlines == curbuf->b_ml.ml_line_count ? 2 : lnum, FALSE));  in u_savedel()
463 	if (bot > curbuf->b_ml.ml_line_count + 1)  in u_savecommon()
483 	if (bot <= curbuf->b_ml.ml_line_count  in u_savecommon()
639 				    ? curbuf->b_ml.ml_line_count + 1  in u_savecommon()
641 			    : uep->ue_lcount != curbuf->b_ml.ml_line_count)  in u_savecommon()
672 		    else if (bot > curbuf->b_ml.ml_line_count)  in u_savecommon()
676 			uep->ue_lcount = curbuf->b_ml.ml_line_count;  in u_savecommon()
718     else if (bot > curbuf->b_ml.ml_line_count)  in u_savecommon()
722 	uep->ue_lcount = curbuf->b_ml.ml_line_count;  in u_savecommon()
802     for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)  in u_compute_hash()
1249     undo_write_bytes(bi, (long_u)buf->b_ml.ml_line_count, 4);  in serialize_header()
1970 				  || line_count != curbuf->b_ml.ml_line_count)  in u_read_undo()
2703     curbuf->b_op_start.lnum = curbuf->b_ml.ml_line_count;  in u_undoredo()
2713 	    bot = curbuf->b_ml.ml_line_count + 1;  in u_undoredo()
2714 	if (top > curbuf->b_ml.ml_line_count || top >= bot  in u_undoredo()
2715 				      || bot > curbuf->b_ml.ml_line_count + 1)  in u_undoredo()
2795 		if (curbuf->b_ml.ml_line_count == 1)  in u_undoredo()
2904     if (curwin->w_cursor.lnum <= curbuf->b_ml.ml_line_count)  in u_undoredo()
3227     for (lnum = 1; lnum < curbuf->b_ml.ml_line_count  in u_find_first_changed()
3240     if (curbuf->b_ml.ml_line_count != uep->ue_size)  in u_find_first_changed()
3318 	extra = curbuf->b_ml.ml_line_count - uep->ue_lcount;  in u_getbot()
3320 	if (uep->ue_bot < 1 || uep->ue_bot > curbuf->b_ml.ml_line_count)  in u_getbot()
3474     if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count) // should never happen  in u_saveline()
3517 			|| curbuf->b_u_line_lnum > curbuf->b_ml.ml_line_count)  in u_undoline()