several bug fixes and tests

mysql-test/mysql-test-run.sh

@@ -730,6 +730,7 @@ start_master()
   	    --server-id=1  \
           --basedir=$MY_BASEDIR \
           --port=$MASTER_MYPORT \
+          --local-infile \
           --exit-info=256 \
           --core \
           --datadir=$MASTER_MYDDIR \
@@ -749,6 +750,7 @@ start_master()
           --server-id=1 --rpl-recovery-rank=1 \
           --basedir=$MY_BASEDIR --init-rpl-role=master \
           --port=$MASTER_MYPORT \
+          --local-infile \
           --datadir=$MASTER_MYDDIR \
           --pid-file=$MASTER_MYPID \
           --socket=$MASTER_MYSOCK \

mysql-test/r/select_found.result

@@ -20,6 +20,12 @@ a	b
 select found_rows();
 FOUND_ROWS()
 8
+select SQL_BUFFER_RESULT SQL_CALC_FOUND_ROWS * from t1 limit 1;
+a	b
+1	2
+select found_rows();
+FOUND_ROWS()
+8
 select SQL_CALC_FOUND_ROWS * from t1 order by b desc limit 1;
 a	b
 8	9

mysql-test/t/select_found.test

@@ -9,6 +9,8 @@ select SQL_CALC_FOUND_ROWS * from t1;
 select found_rows();
 select SQL_CALC_FOUND_ROWS * from t1 limit 1;
 select found_rows();
+select SQL_BUFFER_RESULT SQL_CALC_FOUND_ROWS * from t1 limit 1;
+select found_rows();
 select SQL_CALC_FOUND_ROWS * from t1 order by b desc limit 1;
 select found_rows();
 select SQL_CALC_FOUND_ROWS distinct b from t1 limit 1;

sql/sql_select.cc

@@ -187,7 +187,7 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
   TABLE		*tmp_table;
   int		error, tmp_error;
   bool		need_tmp,hidden_group_fields;
-  bool		simple_order,simple_group,no_order, skip_sort_order;
+  bool		simple_order,simple_group,no_order, skip_sort_order, buffer_result;
   Item::cond_result cond_value;
   SQL_SELECT	*select;
   DYNAMIC_ARRAY keyuse;
@@ -201,6 +201,7 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
   /* Check that all tables, fields, conds and order are ok */
 
   select_distinct=test(select_options & SELECT_DISTINCT);
+  buffer_result=test(select_options & OPTION_BUFFER_RESULT) && !test(select_options & OPTION_FOUND_ROWS);
   tmp_table=0;
   select=0;
   no_order=skip_sort_order=0;
@@ -546,8 +547,7 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
 
   need_tmp= (join.const_tables != join.tables &&
 	     ((select_distinct || !simple_order || !simple_group) ||
-	      (group && order) ||
-	      test(select_options & OPTION_BUFFER_RESULT)));
+	      (group && order) || buffer_result));
 
   // No cache for MATCH
   make_join_readinfo(&join,