branches/zip: Add const qualifiers to function parameters, mostly dtuple_t.

btr/btr0cur.c

@@ -279,7 +279,7 @@ btr_cur_search_to_nth_level(
 /*========================*/
 	dict_index_t*	index,	/* in: index */
 	ulint		level,	/* in: the tree level of search */
-	dtuple_t*	tuple,	/* in: data tuple; NOTE: n_fields_cmp in
+	const dtuple_t*	tuple,	/* in: data tuple; NOTE: n_fields_cmp in
 				tuple must be set so that it cannot get
 				compared to the node ptr page number field! */
 	ulint		mode,	/* in: PAGE_CUR_L, ...;
@@ -855,7 +855,7 @@ btr_cur_insert_if_possible(
 	btr_cur_t*	cursor,	/* in: cursor on page after which to insert;
 				cursor stays valid */
 	page_zip_des_t*	page_zip,/* in: compressed page of cursor */
-	dtuple_t*	tuple,	/* in: tuple to insert; the size info need not
+	const dtuple_t*	tuple,	/* in: tuple to insert; the size info need not
 				have been stored to tuple */
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext,	/* in: number of elements in ext */
@@ -906,7 +906,7 @@ btr_cur_ins_lock_and_undo(
 				not zero, the parameters index and thr
 				should be specified */
 	btr_cur_t*	cursor,	/* in: cursor on page after which to insert */
-	dtuple_t*	entry,	/* in: entry to insert */
+	const dtuple_t*	entry,	/* in: entry to insert */
 	que_thr_t*	thr,	/* in: query thread or NULL */
 	ibool*		inherit)/* out: TRUE if the inserted new record maybe
 				should inherit LOCK_GAP type locks from the
@@ -1031,7 +1031,7 @@ btr_cur_optimistic_insert(
 				specified */
 	btr_cur_t*	cursor,	/* in: cursor on page after which to insert;
 				cursor stays valid */
-	dtuple_t*	entry,	/* in: entry to insert */
+	dtuple_t*	entry,	/* in/out: entry to insert */
 	rec_t**		rec,	/* out: pointer to inserted record if
 				succeed */
 	big_rec_t**	big_rec,/* out: big rec vector whose fields have to
@@ -1233,7 +1233,7 @@ btr_cur_pessimistic_insert(
 				insertion will certainly succeed */
 	btr_cur_t*	cursor,	/* in: cursor after which to insert;
 				cursor stays valid */
-	dtuple_t*	entry,	/* in: entry to insert */
+	dtuple_t*	entry,	/* in/out: entry to insert */
 	rec_t**		rec,	/* out: pointer to inserted record if
 				succeed */
 	big_rec_t**	big_rec,/* out: big rec vector whose fields have to
@@ -2908,9 +2908,9 @@ btr_estimate_n_rows_in_range(
 /*=========================*/
 				/* out: estimated number of rows */
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple1,	/* in: range start, may also be empty tuple */
+	const dtuple_t*	tuple1,	/* in: range start, may also be empty tuple */
 	ulint		mode1,	/* in: search mode for range start */
-	dtuple_t*	tuple2,	/* in: range end, may also be empty tuple */
+	const dtuple_t*	tuple2,	/* in: range end, may also be empty tuple */
 	ulint		mode2)	/* in: search mode for range end */
 {
 	btr_path_t	path1[BTR_PATH_ARRAY_N_SLOTS];
@@ -3362,9 +3362,9 @@ in entry, so that they are not freed in a rollback. */
 void
 btr_cur_mark_dtuple_inherited_extern(
 /*=================================*/
-	dtuple_t*	entry,		/* in: updated entry to be inserted to
-					clustered index */
-	ulint*		ext_vec,	/* in: array of extern fields in the
+	dtuple_t*	entry,		/* in/out: updated entry to be
+					inserted to clustered index */
+	const ulint*	ext_vec,	/* in: array of extern fields in the
 					original record */
 	ulint		n_ext_vec,	/* in: number of elements in ext_vec */
 	upd_t*		update)		/* in: update vector */
@@ -3448,8 +3448,8 @@ Marks all extern fields in a dtuple as owned by the record. */
 void
 btr_cur_unmark_dtuple_extern_fields(
 /*================================*/
-	dtuple_t*	entry,		/* in: clustered index entry */
-	ulint*		ext_vec,	/* in: array of numbers of fields
+	dtuple_t*	entry,		/* in/out: clustered index entry */
+	const ulint*	ext_vec,	/* in: array of numbers of fields
 					which have been stored externally */
 	ulint		n_ext_vec)	/* in: number of elements in ext_vec */
 {

btr/btr0pcur.c

@@ -544,7 +544,7 @@ void
 btr_pcur_open_on_user_rec(
 /*======================*/
 	dict_index_t*	index,		/* in: index */
-	dtuple_t*	tuple,		/* in: tuple on which search done */
+	const dtuple_t*	tuple,		/* in: tuple on which search done */
 	ulint		mode,		/* in: PAGE_CUR_L, ... */
 	ulint		latch_mode,	/* in: BTR_SEARCH_LEAF or
 					BTR_MODIFY_LEAF */

btr/btr0sea.c

@@ -540,7 +540,7 @@ btr_search_check_guess(
 				protected, not the next or previous record
 				in the chain: we cannot look at the next or
 				previous record to check our guess! */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	ulint		mode,	/* in: PAGE_CUR_L, PAGE_CUR_LE, PAGE_CUR_G,
 				or PAGE_CUR_GE */
 	mtr_t*		mtr)	/* in: mtr */
@@ -680,7 +680,7 @@ btr_search_guess_on_hash(
 					/* out: TRUE if succeeded */
 	dict_index_t*	index,		/* in: index */
 	btr_search_t*	info,		/* in: index search info */
-	dtuple_t*	tuple,		/* in: logical record */
+	const dtuple_t*	tuple,		/* in: logical record */
 	ulint		mode,		/* in: PAGE_CUR_L, ... */
 	ulint		latch_mode,	/* in: BTR_SEARCH_LEAF, ...;
 					NOTE that only if has_search_latch

data/data0data.c

@@ -496,7 +496,7 @@ dtuple_convert_big_rec(
 				too many fixed-length or short fields
 				in entry or the index is clustered */
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	entry,	/* in: index entry */
+	const dtuple_t*	entry,	/* in: index entry */
 	const ulint*	ext_vec,/* in: array of externally stored fields,
 				or NULL: if a field already is externally
 				stored, then we cannot move it to the vector

dict/dict0dict.c

@@ -3620,7 +3620,7 @@ dict_index_check_search_tuple(
 /*==========================*/
 				/* out: TRUE if ok */
 	dict_index_t*	index,	/* in: index tree */
-	dtuple_t*	tuple)	/* in: tuple used in a search */
+	const dtuple_t*	tuple)	/* in: tuple used in a search */
 {
 	ut_a(index);
 	ut_a(dtuple_get_n_fields_cmp(tuple)

ibuf/ibuf0ibuf.c

@@ -1402,7 +1402,7 @@ ibuf_entry_build(
 				must be kept because we copy pointers to its
 				fields */
 	dict_index_t*	index,	/* in: non-clustered index */
-	dtuple_t*	entry,	/* in: entry for a non-clustered index */
+	const dtuple_t*	entry,	/* in: entry for a non-clustered index */
 	ulint		space,	/* in: space id */
 	ulint		page_no,/* in: index page number where entry should
 				be inserted */
@@ -2555,7 +2555,7 @@ ibuf_insert_low(
 /*============*/
 				/* out: DB_SUCCESS, DB_FAIL, DB_STRONG_FAIL */
 	ulint		mode,	/* in: BTR_MODIFY_PREV or BTR_MODIFY_TREE */
-	dtuple_t*	entry,	/* in: index entry to insert */
+	const dtuple_t*	entry,	/* in: index entry to insert */
 	dict_index_t*	index,	/* in: index where to insert; must not be
 				unique or clustered */
 	ulint		space,	/* in: space id where to insert */
@@ -2819,7 +2819,7 @@ ibool
 ibuf_insert(
 /*========*/
 				/* out: TRUE if success */
-	dtuple_t*	entry,	/* in: index entry to insert */
+	const dtuple_t*	entry,	/* in: index entry to insert */
 	dict_index_t*	index,	/* in: index where to insert */
 	ulint		space,	/* in: space id where to insert */
 	ulint		zip_size,/* in: compressed page size in bytes, or 0 */

include/btr0cur.h

@@ -106,7 +106,7 @@ btr_cur_search_to_nth_level(
 /*========================*/
 	dict_index_t*	index,	/* in: index */
 	ulint		level,	/* in: the tree level of search */
-	dtuple_t*	tuple,	/* in: data tuple; NOTE: n_fields_cmp in
+	const dtuple_t*	tuple,	/* in: data tuple; NOTE: n_fields_cmp in
 				tuple must be set so that it cannot get
 				compared to the node ptr page number field! */
 	ulint		mode,	/* in: PAGE_CUR_L, ...;
@@ -171,7 +171,7 @@ btr_cur_optimistic_insert(
 				specified */
 	btr_cur_t*	cursor,	/* in: cursor on page after which to insert;
 				cursor stays valid */
-	dtuple_t*	entry,	/* in: entry to insert */
+	dtuple_t*	entry,	/* in/out: entry to insert */
 	rec_t**		rec,	/* out: pointer to inserted record if
 				succeed */
 	big_rec_t**	big_rec,/* out: big rec vector whose fields have to
@@ -199,7 +199,7 @@ btr_cur_pessimistic_insert(
 				insertion will certainly succeed */
 	btr_cur_t*	cursor,	/* in: cursor after which to insert;
 				cursor stays valid */
-	dtuple_t*	entry,	/* in: entry to insert */
+	dtuple_t*	entry,	/* in/out: entry to insert */
 	rec_t**		rec,	/* out: pointer to inserted record if
 				succeed */
 	big_rec_t**	big_rec,/* out: big rec vector whose fields have to
@@ -411,9 +411,9 @@ btr_estimate_n_rows_in_range(
 /*=========================*/
 				/* out: estimated number of rows */
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple1,	/* in: range start, may also be empty tuple */
+	const dtuple_t*	tuple1,	/* in: range start, may also be empty tuple */
 	ulint		mode1,	/* in: search mode for range start */
-	dtuple_t*	tuple2,	/* in: range end, may also be empty tuple */
+	const dtuple_t*	tuple2,	/* in: range end, may also be empty tuple */
 	ulint		mode2);	/* in: search mode for range end */
 /***********************************************************************
 Estimates the number of different key values in a given index, for
@@ -448,9 +448,9 @@ in entry, so that they are not freed in a rollback. */
 void
 btr_cur_mark_dtuple_inherited_extern(
 /*=================================*/
-	dtuple_t*	entry,		/* in: updated entry to be inserted to
-					clustered index */
-	ulint*		ext_vec,	/* in: array of extern fields in the
+	dtuple_t*	entry,		/* in/out: updated entry to be
+					inserted to clustered index */
+	const ulint*	ext_vec,	/* in: array of extern fields in the
 					original record */
 	ulint		n_ext_vec,	/* in: number of elements in ext_vec */
 	upd_t*		update);	/* in: update vector */
@@ -460,8 +460,8 @@ Marks all extern fields in a dtuple as owned by the record. */
 void
 btr_cur_unmark_dtuple_extern_fields(
 /*================================*/
-	dtuple_t*	entry,		/* in: clustered index entry */
-	ulint*		ext_vec,	/* in: array of numbers of fields
+	dtuple_t*	entry,		/* in/out: clustered index entry */
+	const ulint*	ext_vec,	/* in: array of numbers of fields
 					which have been stored externally */
 	ulint		n_ext_vec);	/* in: number of elements in ext_vec */
 /***********************************************************************

include/btr0pcur.h

@@ -68,7 +68,7 @@ void
 btr_pcur_open(
 /*==========*/
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple,	/* in: tuple on which search done */
+	const dtuple_t*	tuple,	/* in: tuple on which search done */
 	ulint		mode,	/* in: PAGE_CUR_L, ...;
 				NOTE that if the search is made using a unique
 				prefix of a record, mode should be
@@ -86,7 +86,7 @@ void
 btr_pcur_open_with_no_init(
 /*=======================*/
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple,	/* in: tuple on which search done */
+	const dtuple_t*	tuple,	/* in: tuple on which search done */
 	ulint		mode,	/* in: PAGE_CUR_L, ...;
 				NOTE that if the search is made using a unique
 				prefix of a record, mode should be
@@ -148,7 +148,7 @@ void
 btr_pcur_open_on_user_rec(
 /*======================*/
 	dict_index_t*	index,		/* in: index */
-	dtuple_t*	tuple,		/* in: tuple on which search done */
+	const dtuple_t*	tuple,		/* in: tuple on which search done */
 	ulint		mode,		/* in: PAGE_CUR_L, ... */
 	ulint		latch_mode,	/* in: BTR_SEARCH_LEAF or
 					BTR_MODIFY_LEAF */

include/btr0pcur.ic

@@ -480,7 +480,7 @@ void
 btr_pcur_open(
 /*==========*/
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple,	/* in: tuple on which search done */
+	const dtuple_t*	tuple,	/* in: tuple on which search done */
 	ulint		mode,	/* in: PAGE_CUR_L, ...;
 				NOTE that if the search is made using a unique
 				prefix of a record, mode should be
@@ -519,7 +519,7 @@ void
 btr_pcur_open_with_no_init(
 /*=======================*/
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple,	/* in: tuple on which search done */
+	const dtuple_t*	tuple,	/* in: tuple on which search done */
 	ulint		mode,	/* in: PAGE_CUR_L, ...;
 				NOTE that if the search is made using a unique
 				prefix of a record, mode should be

include/btr0sea.h

@@ -60,7 +60,7 @@ btr_search_guess_on_hash(
 					/* out: TRUE if succeeded */
 	dict_index_t*	index,		/* in: index */
 	btr_search_t*	info,		/* in: index search info */
-	dtuple_t*	tuple,		/* in: logical record */
+	const dtuple_t*	tuple,		/* in: logical record */
 	ulint		mode,		/* in: PAGE_CUR_L, ... */
 	ulint		latch_mode,	/* in: BTR_SEARCH_LEAF, ... */
 	btr_cur_t*	cursor,		/* out: tree cursor */

include/data0data.h

@@ -352,7 +352,7 @@ dtuple_convert_big_rec(
 				too many fixed-length or short fields
 				in entry or the index is clustered */
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	entry,	/* in: index entry */
+	const dtuple_t*	entry,	/* in: index entry */
 	const ulint*	ext_vec,/* in: array of externally stored fields,
 				or NULL: if a field already is externally
 				stored, then we cannot move it to the vector

include/dict0dict.h

@@ -856,7 +856,7 @@ dict_index_check_search_tuple(
 /*==========================*/
 				/* out: TRUE if ok */
 	dict_index_t*	index,	/* in: index */
-	dtuple_t*	tuple);	/* in: tuple used in a search */
+	const dtuple_t*	tuple);	/* in: tuple used in a search */
 #endif /* UNIV_DEBUG */
 /**************************************************************************
 Builds a node pointer out of a physical record and a page number. */

include/ibuf0ibuf.h

@@ -187,7 +187,7 @@ ibool
 ibuf_insert(
 /*========*/
 				/* out: TRUE if success */
-	dtuple_t*	entry,	/* in: index entry to insert */
+	const dtuple_t*	entry,	/* in: index entry to insert */
 	dict_index_t*	index,	/* in: index where to insert */
 	ulint		space,	/* in: space id where to insert */
 	ulint		zip_size,/* in: compressed page size in bytes, or 0 */

include/page0cur.h

@@ -131,7 +131,7 @@ page_cur_tuple_insert(
 				otherwise */
 	page_cur_t*	cursor,	/* in: a page cursor */
 	page_zip_des_t*	page_zip,/* in/out: compressed page, or NULL */
-	dtuple_t*	tuple,	/* in: pointer to a data tuple */
+	const dtuple_t*	tuple,	/* in: pointer to a data tuple */
 	dict_index_t*	index,	/* in: record descriptor */
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext,	/* in: number of elements in ext */
@@ -201,7 +201,7 @@ page_cur_search(
 				/* out: number of matched fields on the left */
 	page_t*		page,	/* in: index page */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	ulint		mode,	/* in: PAGE_CUR_L, PAGE_CUR_LE, PAGE_CUR_G,
 				or PAGE_CUR_GE */
 	page_cur_t*	cursor);/* out: page cursor */
@@ -213,7 +213,7 @@ page_cur_search_with_match(
 /*=======================*/
 	page_t*		page,	/* in: index page */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	ulint		mode,	/* in: PAGE_CUR_L, PAGE_CUR_LE, PAGE_CUR_G,
 				or PAGE_CUR_GE */
 	ulint*		iup_matched_fields,

include/page0cur.ic

@@ -149,7 +149,7 @@ page_cur_search(
 				/* out: number of matched fields on the left */
 	page_t*		page,	/* in: index page */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	ulint		mode,	/* in: PAGE_CUR_L, PAGE_CUR_LE, PAGE_CUR_G,
 				or PAGE_CUR_GE */
 	page_cur_t*	cursor)	/* out: page cursor */
@@ -182,7 +182,7 @@ page_cur_tuple_insert(
 				otherwise */
 	page_cur_t*	cursor,	/* in: a page cursor */
 	page_zip_des_t*	page_zip,/* in/out: compressed page, or NULL */
-	dtuple_t*	tuple,	/* in: pointer to a data tuple */
+	const dtuple_t*	tuple,	/* in: pointer to a data tuple */
 	dict_index_t*	index,	/* in: record descriptor */
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext,	/* in: number of elements in ext */

include/page0page.h

@@ -266,8 +266,8 @@ page_cmp_dtuple_rec_with_match(
 				/* out: 1, 0, -1, if dtuple is greater, equal,
 				less than rec, respectively, when only the
 				common first fields are compared */
-	dtuple_t*	dtuple,	/* in: data tuple */
-	rec_t*		rec,	/* in: physical record on a page; may also
+	const dtuple_t*	dtuple,	/* in: data tuple */
+	const rec_t*	rec,	/* in: physical record on a page; may also
 				be page infimum or supremum, in which case
 				matched-parameter values below are not
 				affected */

include/page0page.ic

@@ -385,8 +385,8 @@ page_cmp_dtuple_rec_with_match(
 				/* out: 1, 0, -1, if dtuple is greater, equal,
 				less than rec, respectively, when only the
 				common first fields are compared */
-	dtuple_t*	dtuple,	/* in: data tuple */
-	rec_t*		rec,	/* in: physical record on a page; may also
+	const dtuple_t*	dtuple,	/* in: data tuple */
+	const rec_t*	rec,	/* in: physical record on a page; may also
 				be page infimum or supremum, in which case
 				matched-parameter values below are not
 				affected */

include/rem0rec.h

@@ -622,7 +622,7 @@ rec_get_converted_size(
 /*===================*/
 				/* out: size */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	dtuple,	/* in: data tuple */
+	const dtuple_t*	dtuple,	/* in: data tuple */
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext);	/* in: number of elements in ext */
 /******************************************************************
@@ -632,7 +632,7 @@ The fields are copied to the memory heap. */
 void
 rec_copy_prefix_to_dtuple(
 /*======================*/
-	dtuple_t*	tuple,		/* in: data tuple */
+	dtuple_t*	tuple,		/* out: data tuple */
 	const rec_t*	rec,		/* in: physical record */
 	dict_index_t*	index,		/* in: record descriptor */
 	ulint		n_fields,	/* in: number of fields to copy */

include/rem0rec.ic

@@ -1515,7 +1515,7 @@ rec_get_converted_size_new(
 /*=======================*/
 				/* out: size */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	dtuple,	/* in: data tuple */
+	const dtuple_t*	dtuple,	/* in: data tuple */
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext);	/* in: number of elements in ext */
 /**************************************************************
@@ -1527,7 +1527,7 @@ rec_get_converted_size(
 /*===================*/
 				/* out: size */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	dtuple,	/* in: data tuple */
+	const dtuple_t*	dtuple,	/* in: data tuple */
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext)	/* in: number of elements in ext */
 {

include/row0upd.h

@@ -91,7 +91,7 @@ Sets the trx id or roll ptr field of a clustered index entry. */
 void
 row_upd_index_entry_sys_field(
 /*==========================*/
-	dtuple_t*	entry,	/* in: index entry, where the memory buffers
+	const dtuple_t*	entry,	/* in: index entry, where the memory buffers
 				for sys fields are already allocated:
 				the function just copies the new values to
 				them */

include/trx0rec.h

@@ -187,7 +187,7 @@ trx_undo_report_row_operation(
 					TRX_UNDO_MODIFY_OP */
 	que_thr_t*	thr,		/* in: query thread */
 	dict_index_t*	index,		/* in: clustered index */
-	dtuple_t*	clust_entry,	/* in: in the case of an insert,
+	const dtuple_t*	clust_entry,	/* in: in the case of an insert,
 					index entry to insert into the
 					clustered index, otherwise NULL */
 	upd_t*		update,		/* in: in the case of an update,

page/page0cur.c

@@ -33,7 +33,7 @@ page_cur_try_search_shortcut(
 				/* out: TRUE on success */
 	page_t*		page,	/* in: index page */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	ulint*		iup_matched_fields,
 				/* in/out: already matched fields in upper
 				limit record */
@@ -146,7 +146,7 @@ page_cur_rec_field_extends(
 /*=======================*/
 				/* out: TRUE if rec field
 				extends tuple field */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	rec_t*		rec,	/* in: record */
 	const ulint*	offsets,/* in: array returned by rec_get_offsets() */
 	ulint		n)	/* in: compare nth field */
@@ -195,7 +195,7 @@ page_cur_search_with_match(
 /*=======================*/
 	page_t*		page,	/* in: index page */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	tuple,	/* in: data tuple */
+	const dtuple_t*	tuple,	/* in: data tuple */
 	ulint		mode,	/* in: PAGE_CUR_L, PAGE_CUR_LE, PAGE_CUR_G,
 				or PAGE_CUR_GE */
 	ulint*		iup_matched_fields,

rem/rem0rec.c

@@ -624,7 +624,7 @@ rec_get_converted_size_new(
 /*=======================*/
 				/* out: size */
 	dict_index_t*	index,	/* in: record descriptor */
-	dtuple_t*	dtuple,
+	const dtuple_t*	dtuple,
 	const ulint*	ext,	/* in: array of extern field numbers */
 	ulint		n_ext)	/* in: number of elements in ext */
 {
@@ -1111,7 +1111,7 @@ are copied to the memory heap. */
 void
 rec_copy_prefix_to_dtuple(
 /*======================*/
-	dtuple_t*	tuple,		/* in: data tuple */
+	dtuple_t*	tuple,		/* out: data tuple */
 	const rec_t*	rec,		/* in: physical record */
 	dict_index_t*	index,		/* in: record descriptor */
 	ulint		n_fields,	/* in: number of fields to copy */

row/row0upd.c

@@ -336,7 +336,7 @@ Sets the trx id or roll ptr field of a clustered index entry. */
 void
 row_upd_index_entry_sys_field(
 /*==========================*/
-	dtuple_t*	entry,	/* in: index entry, where the memory buffers
+	const dtuple_t*	entry,	/* in: index entry, where the memory buffers
 				for sys fields are already allocated:
 				the function just copies the new values to
 				them */

trx/trx0rec.c

@@ -1011,7 +1011,7 @@ trx_undo_report_row_operation(
 					TRX_UNDO_MODIFY_OP */
 	que_thr_t*	thr,		/* in: query thread */
 	dict_index_t*	index,		/* in: clustered index */
-	dtuple_t*	clust_entry,	/* in: in the case of an insert,
+	const dtuple_t*	clust_entry,	/* in: in the case of an insert,
 					index entry to insert into the
 					clustered index, otherwise NULL */
 	upd_t*		update,		/* in: in the case of an update,