Merge aivanov@bk-internal.mysql.com:/home/bk/mysql-4.1

into  mysql.com:/home/alexi/innodb/mysql-4.1

innobase/dict/dict0dict.c

@@ -1377,6 +1377,38 @@ 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. */
 
@@ -2160,8 +2192,9 @@ dict_foreign_error_report(
 	fputs(msg, file);
 	fputs(" Constraint:\n", file);
 	dict_print_info_on_foreign_key_in_create_format(file, NULL, fk);
+	putc('\n', file);
 	if (fk->foreign_index) {
-		fputs("\nThe index in the foreign key in table is ", file);
+		fputs("The index in the foreign key in table is ", file);
 		ut_print_name(file, NULL, fk->foreign_index->name);
 		fputs(
 "\nSee http://dev.mysql.com/doc/mysql/en/InnoDB_foreign_key_constraints.html\n"

innobase/dict/dict0mem.c

@@ -94,6 +94,21 @@ 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. */
 

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

@@ -55,6 +55,13 @@ dict_mem_table_create(
 					is ignored if the table is made
 					a member of a cluster */
 	ulint		n_cols);	/* in: number of columns */
+/********************************************************************
+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

@@ -242,6 +242,9 @@ contains the sum of the following flag and the locally stored len. */
 
 #define UNIV_EXTERN_STORAGE_FIELD (UNIV_SQL_NULL - UNIV_PAGE_SIZE)
 
+/* 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/row/row0mysql.c

@@ -1474,6 +1474,7 @@ 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
@@ -1510,6 +1511,19 @@ row_create_table_for_mysql(
 		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)) {