Applied innodb-5.0-ss476 snapshot.

Fix BUG#18934: "InnoDB crashes when table uses column like DB_ROW_ID".
 Also, fix memory leaks in row_create_table_for_mysql() in rare
 corner cases.

innobase/dict/dict0dict.c

@@ -1249,15 +1249,13 @@ dict_table_remove_from_cache(
 	/* Remove table from LRU list of tables */
 	UT_LIST_REMOVE(table_LRU, dict_sys->table_LRU, table);
 
-	mutex_free(&(table->autoinc_mutex));
-
 	size = mem_heap_get_size(table->heap);
 
 	ut_ad(dict_sys->size >= size);
 
 	dict_sys->size -= size;
 
-	mem_heap_free(table->heap);
+	dict_mem_table_free(table);
 }
 
 /**************************************************************************
@@ -1378,6 +1376,38 @@ dict_col_reposition_in_cache(
 	HASH_INSERT(dict_col_t, hash, dict_sys->col_hash, fold, col);
 }
 
+/********************************************************************
+If the given column name is reserved for InnoDB system columns, return
+TRUE. */
+
+ibool
+dict_col_name_is_reserved(
+/*======================*/
+				/* out: TRUE if name is reserved */
+	const char*	name)	/* in: column name */
+{
+	/* This check reminds that if a new system column is added to
+	the program, it should be dealt with here. */
+#if DATA_N_SYS_COLS != 4
+#error "DATA_N_SYS_COLS != 4"
+#endif
+
+	static const char*	reserved_names[] = {
+		"DB_ROW_ID", "DB_TRX_ID", "DB_ROLL_PTR", "DB_MIX_ID"
+	};
+
+	ulint			i;
+
+	for (i = 0; i < UT_ARR_SIZE(reserved_names); i++) {
+		if (strcmp(name, reserved_names[i]) == 0) {
+
+			return(TRUE);
+		}
+	}
+
+	return(FALSE);
+}
+
 /**************************************************************************
 Adds an index to the dictionary cache. */
 
@@ -1551,7 +1581,7 @@ dict_index_remove_from_cache(
 
 	dict_sys->size -= size;
 
-	mem_heap_free(index->heap);
+	dict_mem_index_free(index);
 }
 
 /***********************************************************************

innobase/dict/dict0load.c

@@ -767,7 +767,7 @@ dict_load_table(
 	if (!btr_pcur_is_on_user_rec(&pcur, &mtr)
 			|| rec_get_deleted_flag(rec, sys_tables->comp)) {
 		/* Not found */
-
+	err_exit:
 		btr_pcur_close(&pcur);
 		mtr_commit(&mtr);
 		mem_heap_free(heap);
@@ -779,11 +779,8 @@ dict_load_table(
 
 	/* Check if the table name in record is the searched one */
 	if (len != ut_strlen(name) || ut_memcmp(name, field, len) != 0) {
-		btr_pcur_close(&pcur);
-		mtr_commit(&mtr);
-		mem_heap_free(heap);
-		
-		return(NULL);
+
+		goto err_exit;
 	}
 
 	ut_a(0 == ut_strcmp("SPACE",
@@ -844,6 +841,14 @@ dict_load_table(
 	field = rec_get_nth_field_old(rec, 5, &len);
 	table->type = mach_read_from_4(field);
 
+	if (UNIV_UNLIKELY(table->type != DICT_TABLE_ORDINARY)) {
+		ut_print_timestamp(stderr);
+		fprintf(stderr,
+			"  InnoDB: table %s: unknown table type %lu\n",
+			name, (ulong) table->type);
+		goto err_exit;
+	}
+
 	if (table->type == DICT_TABLE_CLUSTER_MEMBER) {
 		ut_error;
 #if 0 /* clustered tables have not been implemented yet */

innobase/dict/dict0mem.c

@@ -97,6 +97,21 @@ dict_mem_table_create(
 	return(table);
 }
 
+/********************************************************************
+Free a table memory object. */
+
+void
+dict_mem_table_free(
+/*================*/
+	dict_table_t*	table)		/* in: table */
+{
+	ut_ad(table);
+	ut_ad(table->magic_n == DICT_TABLE_MAGIC_N);
+
+	mutex_free(&(table->autoinc_mutex));
+	mem_heap_free(table->heap);
+}
+
 /**************************************************************************
 Creates a cluster memory object. */
 
@@ -290,5 +305,8 @@ dict_mem_index_free(
 /*================*/
 	dict_index_t*	index)	/* in: index */
 {
+	ut_ad(index);
+	ut_ad(index->magic_n == DICT_INDEX_MAGIC_N);
+
 	mem_heap_free(index->heap);
 }

innobase/ibuf/ibuf0ibuf.c

@@ -1160,9 +1160,9 @@ ibuf_dummy_index_free(
 	dict_index_t*	index)	/* in: dummy index */
 {
 	dict_table_t*	table = index->table;
-	mem_heap_free(index->heap);
-	mutex_free(&(table->autoinc_mutex));
-	mem_heap_free(table->heap);
+
+	dict_mem_index_free(index);
+	dict_mem_table_free(table);
 }
 
 /*************************************************************************

innobase/include/dict0dict.h

@@ -98,6 +98,15 @@ ulint
 dict_col_get_clust_pos(
 /*===================*/
 	dict_col_t*	col);
+/********************************************************************
+If the given column name is reserved for InnoDB system columns, return
+TRUE. */
+
+ibool
+dict_col_name_is_reserved(
+/*======================*/
+				/* out: TRUE if name is reserved */
+	const char*	name);	/* in: column name */
 /************************************************************************
 Initializes the autoinc counter. It is not an error to initialize an already
 initialized counter. */

innobase/include/dict0mem.h

@@ -56,6 +56,13 @@ dict_mem_table_create(
 					a member of a cluster */
 	ulint		n_cols,		/* in: number of columns */
 	ibool		comp);		/* in: TRUE=compact page format */
+/********************************************************************
+Free a table memory object. */
+
+void
+dict_mem_table_free(
+/*================*/
+	dict_table_t*	table);		/* in: table */
 /**************************************************************************
 Creates a cluster memory object. */
 

innobase/include/univ.i

@@ -261,6 +261,9 @@ it is read or written. */
 /* Tell the compiler that cond is unlikely to hold */
 #define UNIV_UNLIKELY(cond) UNIV_EXPECT(cond, FALSE)
 
+/* Compile-time constant of the given array's size. */
+#define UT_ARR_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
 #include <stdio.h>
 #include "ut0dbg.h"
 #include "ut0ut.h"

innobase/log/log0recv.c

@@ -890,9 +890,9 @@ recv_parse_or_apply_log_rec_body(
 	ut_ad(!page || ptr);
 	if (index) {
 		dict_table_t*	table = index->table;
-		mem_heap_free(index->heap);
-		mutex_free(&(table->autoinc_mutex));
-		mem_heap_free(table->heap);
+
+		dict_mem_index_free(index);
+		dict_mem_table_free(table);
 	}
 	
 	return(ptr);

innobase/row/row0mysql.c

@@ -1673,7 +1673,9 @@ row_mysql_recover_tmp_table(
 
 	if (!ptr) {
 		/* table name does not begin with "/rsql" */
+		dict_mem_table_free(table);
 		trx_commit_for_mysql(trx);
+
 		return(DB_ERROR);
 	}
 	else {
@@ -1785,6 +1787,7 @@ row_create_table_for_mysql(
 	const char*	table_name;
 	ulint		table_name_len;
 	ulint		err;
+	ulint		i;
 
 	ut_ad(trx->mysql_thread_id == os_thread_get_curr_id());
 #ifdef UNIV_SYNC_DEBUG
@@ -1802,6 +1805,7 @@ row_create_table_for_mysql(
 		"InnoDB: with raw, and innodb_force_... is removed.\n",
 		stderr);
 
+		dict_mem_table_free(table);
 		trx_commit_for_mysql(trx);
 
 		return(DB_ERROR);
@@ -1816,11 +1820,25 @@ row_create_table_for_mysql(
     "InnoDB: MySQL system tables must be of the MyISAM type!\n",
 		table->name);
 
+		dict_mem_table_free(table);
 		trx_commit_for_mysql(trx);
 
 		return(DB_ERROR);
 	}
 
+	/* Check that no reserved column names are used. */
+	for (i = 0; i < dict_table_get_n_user_cols(table); i++) {
+		dict_col_t*	col = dict_table_get_nth_col(table, i);
+
+		if (dict_col_name_is_reserved(col->name)) {
+
+			dict_mem_table_free(table);
+			trx_commit_for_mysql(trx);
+
+			return(DB_ERROR);
+		}
+	}
+
 	trx_start_if_not_started(trx);
 
 	if (row_mysql_is_recovered_tmp_table(table->name)) {

mysql-test/r/innodb.result

@@ -1821,7 +1821,7 @@ Variable_name	Value
 innodb_sync_spin_loops	20
 show variables like "innodb_thread_concurrency";
 Variable_name	Value
-innodb_thread_concurrency	8
+innodb_thread_concurrency	0
 set global innodb_thread_concurrency=1001;
 show variables like "innodb_thread_concurrency";
 Variable_name	Value
@@ -3232,12 +3232,5 @@ drop trigger t2t;
 drop trigger t3t;
 drop trigger t4t;
 drop table t1, t2, t3, t4, t5;
-create table t1(a date) engine=innodb;
-create table t2(a date, key(a)) engine=innodb;
-insert into t1 values('2005-10-01');
-insert into t2 values('2005-10-01');
-select * from t1, t2
-where t2.a between t1.a - interval 2 day and t1.a + interval 2 day;
-a	a
-2005-10-01	2005-10-01
-drop table t1, t2;
+CREATE TABLE t1 (DB_ROW_ID int) engine=innodb;
+ERROR HY000: Can't create table './test/t1.frm' (errno: -1)

mysql-test/t/innodb.test

@@ -2128,14 +2128,6 @@ connection default;
 disconnect a;
 disconnect b;
 
-#
-# Bug #14360: problem with intervals
-#
-
-create table t1(a date) engine=innodb;
-create table t2(a date, key(a)) engine=innodb; 
-insert into t1 values('2005-10-01');
-insert into t2 values('2005-10-01');
-select * from t1, t2
-  where t2.a between t1.a - interval 2 day and t1.a + interval 2 day;
-drop table t1, t2;
+# bug 18934, "InnoDB crashes when table uses column names like DB_ROW_ID"
+--error 1005
+CREATE TABLE t1 (DB_ROW_ID int) engine=innodb;