Merge bk@192.168.21.1:mysql-5.1-opt

into  mysql.com:/home/hf/work/33334/my51-33334

client/mysqltest.c

@@ -536,6 +536,17 @@ static int do_send_query(struct st_connection *cn, const char *q, int q_len,
   return 0;
 }
 
+static void wait_query_thread_end(struct st_connection *con)
+{
+  if (!con->query_done)
+  {
+    pthread_mutex_lock(&con->mutex);
+    while (!con->query_done)
+      pthread_cond_wait(&con->cond, &con->mutex);
+    pthread_mutex_unlock(&con->mutex);
+  }
+}
+
 #else /*EMBEDDED_LIBRARY*/
 
 #define do_send_query(cn,q,q_len,flags) mysql_send_query(&cn->mysql, q, q_len)
@@ -4069,7 +4080,14 @@ void do_close_connection(struct st_command *command)
       con->mysql.net.vio = 0;
     }
   }
-#endif
+#else
+  /*
+    As query could be still executed in a separate theread
+    we need to check if the query's thread was finished and probably wait
+    (embedded-server specific)
+  */
+  wait_query_thread_end(con);
+#endif /*EMBEDDED_LIBRARY*/
   if (con->stmt)
     mysql_stmt_close(con->stmt);
   con->stmt= 0;
@@ -4355,6 +4373,9 @@ void do_connect(struct st_command *command)
           (int) (sizeof(connections)/sizeof(struct st_connection)));
   }
 
+#ifdef EMBEDDED_LIBRARY
+  con_slot->query_done= 1;
+#endif
   if (!mysql_init(&con_slot->mysql))
     die("Failed on mysql_init()");
   if (opt_compress || con_compress)
@@ -5857,12 +5878,7 @@ void run_query_normal(struct st_connection *cn, struct st_command *command,
     query's thread was finished and probably wait
   */
   else if (flags & QUERY_REAP_FLAG)
-  {
-    pthread_mutex_lock(&cn->mutex);
-    while (!cn->query_done)
-      pthread_cond_wait(&cn->cond, &cn->mutex);
-    pthread_mutex_unlock(&cn->mutex);
-  }
+    wait_query_thread_end(cn);
 #endif /*EMBEDDED_LIBRARY*/
   if (!(flags & QUERY_REAP_FLAG))
     DBUG_VOID_RETURN;

mysql-test/r/flush.result

@@ -72,6 +72,7 @@ flush tables with read lock;
 unlock tables;
 drop table t1, t2;
 set session low_priority_updates=default;
+select benchmark(200, (select sin(1))) > 1000;
 End of 5.0 tests
 set @old_general_log= @@general_log;
 set @old_read_only= @@read_only;

mysql-test/t/flush.test

@@ -164,6 +164,15 @@ drop table t1, t2;
 
 set session low_priority_updates=default;
 
+#
+# Bug #33334 mysqltest_embedded crashes when disconnecting before reap
+#
+
+connect (con1,localhost,root,,);
+send select benchmark(200, (select sin(1))) > 1000;
+disconnect con1;
+connection default;
+
 --echo End of 5.0 tests
 
 #