Merge bk-internal.mysql.com:/home/bk/mysql-5.1

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint


BitKeeper/deleted/.del-CMakeLists.txt~1:
  Auto merged
BitKeeper/deleted/.del-make_win_bin_dist:
  Auto merged
configure.in:
  Auto merged
include/my_global.h:
  Auto merged
include/mysql.h:
  Auto merged
libmysqld/lib_sql.cc:
  Auto merged
mysql-test/include/mix1.inc:
  Auto merged
mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/r/innodb_mysql.result:
  Auto merged
mysql-test/r/log_tables.result:
  Auto merged
mysql-test/r/trigger.result:
  Auto merged
mysql-test/r/view.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged
mysql-test/t/im_daemon_life_cycle.imtest:
  Auto merged
mysql-test/t/sp-error.test:
  Auto merged
mysql-test/t/sp.test:
  Auto merged
mysql-test/t/trigger.test:
  Auto merged
mysql-test/t/view.test:
  Auto merged
netware/BUILD/mwenv:
  Auto merged
scripts/make_binary_distribution.sh:
  Auto merged
sql/Makefile.am:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sp.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/sql_trigger.cc:
  Auto merged
sql/sql_union.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.cc:
  Auto merged
storage/innobase/handler/ha_innodb.cc:
  Auto merged
tests/mysql_client_test.c:
  Auto merged
include/my_time.h:
  manual merge.
mysql-test/mysql-test-run.pl:
  manual merge.
mysql-test/r/ps.result:
  manual merge.
mysql-test/t/disabled.def:
  manual merge.
mysql-test/t/ps.test:
  manual merge.

1 files changed, 27 insertions, 6 deletions

diff --git a/sql/sql_prepare.cc b/sql/sql_prepare.cc
index 314d4ed5631..013c3a17fd6 100644
--- a/sql/sql_prepare.cc
+++ b/sql/sql_prepare.cc
@@ -2287,6 +2287,14 @@ void mysql_stmt_execute(THD *thd, char *packet_arg, uint packet_length)
 #endif
   if (!(specialflag & SPECIAL_NO_PRIOR))
     my_pthread_setprio(pthread_self(),QUERY_PRIOR);
+
+  /*
+    If the free_list is not empty, we'll wrongly free some externally
+    allocated items when cleaning up after validation of the prepared
+    statement.
+  */
+  DBUG_ASSERT(thd->free_list == NULL);
+
   error= stmt->execute(&expanded_query,
                        test(flags & (ulong) CURSOR_TYPE_READ_ONLY));
   if (!(specialflag & SPECIAL_NO_PRIOR))
@@ -2349,6 +2357,13 @@ void mysql_sql_stmt_execute(THD *thd)
 
   DBUG_PRINT("info",("stmt: %p", stmt));
 
+  /*
+    If the free_list is not empty, we'll wrongly free some externally
+    allocated items when cleaning up after validation of the prepared
+    statement.
+  */
+  DBUG_ASSERT(thd->free_list == NULL);
+
   if (stmt->set_params_from_vars(stmt, lex->prepared_stmt_params,
                                  &expanded_query))
     goto set_params_data_err;
@@ -2839,12 +2854,12 @@ bool Prepared_statement::prepare(const char *packet, uint packet_len)
     external changes when cleaning up after validation.
   */
   DBUG_ASSERT(thd->change_list.is_empty());
-  /*
-    If the free_list is not empty, we'll wrongly free some externally
-    allocated items when cleaning up after validation of the prepared
-    statement.
+
+  /* 
+   The only case where we should have items in the thd->free_list is
+   after stmt->set_params_from_vars(), which may in some cases create
+   Item_null objects.
   */
-  DBUG_ASSERT(thd->free_list == NULL);
 
   if (error == 0)
     error= check_prepared_statement(this, name.str != 0);
@@ -2943,7 +2958,13 @@ bool Prepared_statement::execute(String *expanded_query, bool open_cursor)
     allocated items when cleaning up after execution of this statement.
   */
   DBUG_ASSERT(thd->change_list.is_empty());
-  DBUG_ASSERT(thd->free_list == NULL);
+
+  /* 
+   The only case where we should have items in the thd->free_list is
+   after stmt->set_params_from_vars(), which may in some cases create
+   Item_null objects.
+  */
+
   thd->set_n_backup_statement(this, &stmt_backup);
   if (expanded_query->length() &&
       alloc_query(thd, (char*) expanded_query->ptr(),