Remove unused parameters and dead code

upd_field_set_field_no(): Remove the unused parameter trx, and
remove a debug message. In debug builds, the out-of-bounds access
would still be caught by dict_index_get_nth_col().

trx_undo_update_rec_get_update(): Remove the unnecessary parameter trx.

storage/innobase/include/row0upd.h

@@ -87,8 +87,7 @@ upd_field_set_field_no(
 	upd_field_t*	upd_field,	/*!< in: update vector field */
 	ulint		field_no,	/*!< in: field number in a clustered
 					index */
-	dict_index_t*	index,		/*!< in: index */
-	trx_t*		trx);		/*!< in: transaction */
+	dict_index_t*	index);
 
 /** set field number to a update vector field, marks this field is updated
 @param[in,out]	upd_field	update vector field

storage/innobase/include/row0upd.ic

@@ -95,22 +95,10 @@ upd_field_set_field_no(
 	upd_field_t*	upd_field,	/*!< in: update vector field */
 	ulint		field_no,	/*!< in: field number in a clustered
 					index */
-	dict_index_t*	index,		/*!< in: index */
-	trx_t*		trx)		/*!< in: transaction */
+	dict_index_t*	index)		/*!< in: index */
 {
 	upd_field->field_no = unsigned(field_no);
 	upd_field->orig_len = 0;
-
-	if (UNIV_UNLIKELY(field_no >= dict_index_get_n_fields(index))) {
-		ib::error()
-			<< " trying to access field " << field_no
-			<< " in " << index->name
-			<< " of table " << index->table->name
-			<< " which contains only " << index->n_fields
-			<< " fields";
-		ut_ad(0);
-	}
-
 	dict_col_copy_type(dict_index_get_nth_col(index, field_no),
 			   dfield_get_type(&upd_field->new_val));
 }

storage/innobase/include/trx0rec.h

@@ -152,7 +152,6 @@ trx_undo_update_rec_get_update(
 	trx_id_t	trx_id,	/*!< in: transaction id from this undorecord */
 	roll_ptr_t	roll_ptr,/*!< in: roll pointer from this undo record */
 	ulint		info_bits,/*!< in: info bits from this undo record */
-	trx_t*		trx,	/*!< in: transaction */
 	mem_heap_t*	heap,	/*!< in: memory heap from which the memory
 				needed is allocated */
 	upd_t**		upd);	/*!< out, own: update vector */

storage/innobase/pars/pars0pars.cc

@@ -1180,7 +1180,7 @@ pars_process_assign_list(
 		upd_field_set_field_no(upd_field, dict_index_get_nth_col_pos(
 						clust_index, col_sym->col_no,
 						NULL),
-				       clust_index, NULL);
+				       clust_index);
 		upd_field->exp = assign_node->val;
 
 		if (!dict_col_get_fixed_size(

storage/innobase/row/row0purge.cc

@@ -819,7 +819,6 @@ row_purge_parse_undo_rec(
 {
 	dict_index_t*	clust_index;
 	byte*		ptr;
-	trx_t*		trx;
 	undo_no_t	undo_no;
 	table_id_t	table_id;
 	trx_id_t	trx_id;
@@ -911,10 +910,8 @@ row_purge_parse_undo_rec(
 	ptr = trx_undo_rec_get_row_ref(ptr, clust_index, &(node->ref),
 				       node->heap);
 
-	trx = thr_get_trx(thr);
-
 	ptr = trx_undo_update_rec_get_update(ptr, clust_index, type, trx_id,
-					     roll_ptr, info_bits, trx,
+					     roll_ptr, info_bits,
 					     node->heap, &(node->update));
 
 	/* Read to the partial row the fields that occur in indexes */

storage/innobase/row/row0umod.cc

@@ -1160,7 +1160,7 @@ row_undo_mod_parse_undo_rec(
 				       node->heap);
 
 	ptr = trx_undo_update_rec_get_update(ptr, clust_index, type, trx_id,
-				       roll_ptr, info_bits, node->trx,
+				       roll_ptr, info_bits,
 				       node->heap, &(node->update));
 	node->new_trx_id = trx_id;
 	node->cmpl_info = cmpl_info;

storage/innobase/row/row0upd.cc

@@ -1006,7 +1006,7 @@ row_upd_build_sec_rec_difference_binary(
 
 			dfield_copy(&(upd_field->new_val), dfield);
 
-			upd_field_set_field_no(upd_field, i, index, NULL);
+			upd_field_set_field_no(upd_field, i, index);
 
 			n_diff++;
 		}
@@ -1103,7 +1103,7 @@ row_upd_build_difference_binary(
 
 			dfield_copy(&(upd_field->new_val), dfield);
 
-			upd_field_set_field_no(upd_field, i, index, trx);
+			upd_field_set_field_no(upd_field, i, index);
 
 			n_diff++;
 		}

storage/innobase/trx/trx0rec.cc

@@ -1453,7 +1453,6 @@ trx_undo_update_rec_get_update(
 	trx_id_t	trx_id,	/*!< in: transaction id from this undo record */
 	roll_ptr_t	roll_ptr,/*!< in: roll pointer from this undo record */
 	ulint		info_bits,/*!< in: info bits from this undo record */
-	trx_t*		trx,	/*!< in: transaction */
 	mem_heap_t*	heap,	/*!< in: memory heap from which the memory
 				needed is allocated */
 	upd_t**		upd)	/*!< out, own: update vector */
@@ -1489,7 +1488,7 @@ trx_undo_update_rec_get_update(
 
 	upd_field_set_field_no(upd_field,
 			       dict_index_get_sys_col_pos(index, DATA_TRX_ID),
-			       index, trx);
+			       index);
 	dfield_set_data(&(upd_field->new_val), buf, DATA_TRX_ID_LEN);
 
 	upd_field = upd_get_nth_field(update, n_fields + 1);
@@ -1500,7 +1499,7 @@ trx_undo_update_rec_get_update(
 
 	upd_field_set_field_no(
 		upd_field, dict_index_get_sys_col_pos(index, DATA_ROLL_PTR),
-		index, trx);
+		index);
 	dfield_set_data(&(upd_field->new_val), buf, DATA_ROLL_PTR_LEN);
 
 	/* Store then the updated ordinary columns to the update vector */
@@ -1561,7 +1560,7 @@ trx_undo_update_rec_get_update(
 			upd_field_set_v_field_no(
 				upd_field, field_no, index);
 		} else {
-			upd_field_set_field_no(upd_field, field_no, index, trx);
+			upd_field_set_field_no(upd_field, field_no, index);
 		}
 
 		ptr = trx_undo_rec_get_col_val(ptr, &field, &len, &orig_len);
@@ -2247,7 +2246,7 @@ trx_undo_prev_version_build(
 
 	ptr = trx_undo_update_rec_get_update(ptr, index, type, trx_id,
 					     roll_ptr, info_bits,
-					     NULL, heap, &update);
+					     heap, &update);
 	ut_a(ptr);
 
 	if (row_upd_changes_field_size_or_external(index, offsets, update)) {