1 files changed, 38 insertions, 86 deletions
diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test
index 326d80f84c1..c5edd5414e3 100644
--- a/mysql-test/t/subselect.test
+++ b/mysql-test/t/subselect.test
@@ -3006,92 +3006,44 @@ DROP TABLE t1,t2;
 create table t1(a int,b int,key(a),key(b));
 insert into t1(a,b) values (1,2),(2,1),(2,3),(3,4),(5,4),(5,5),
   (6,7),(7,4),(5,3);
-# test for the stack overflow bug
-select sum(a),a from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1
-  )group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1) 
-group by a;
---replace_regex /overrun.*$/overrun detected/
---error 1436
-select sum(a),a from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1) 
-group by a;
-# test for the memory consumption & subquery slowness bug
-explain select sum(a),a from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 
-  )group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1) 
-group by a;
---replace_regex /overrun.*$/overrun detected/
---error 1436
-explain select sum(a),a from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 where a> ( select sum(a) from t1 where a> (
-  select sum(a) from t1 
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1
-  )group by b limit 1)group by b limit 1)group by b limit 1) 
-group by a;
+
+let $nesting= 26;
+let $should_work_nesting= 5;
+let $start= select sum(a),a from t1 where a> ( select sum(a) from t1 ;
+let $end= )group by a ;
+let $start_app= where a> ( select sum(a) from t1 ;
+let $end_pre= )group by b limit 1 ;
+
+--disable_result_log
+--disable_query_log
+# At least 4 level nesting should work without errors
+while ($should_work_nesting)
+{
+--echo $should_work_nesting
+  eval $start $end;
+  eval explain $start $end;
+  let $start= $start
+  $start_app;
+  let $end= $end_pre
+  $end;
+  dec $should_work_nesting;
+}
+# Other may fail with the 'stack overrun error'
+while ($nesting)
+{
+--echo $nesting
+--error 0,1436
+  eval $start $end;
+--error 0,1436
+  eval explain $start $end;
+  let $start= $start
+  $start_app;
+  let $end= $end_pre
+  $end;
+  dec $nesting;
+}
+--enable_result_log
+--enable_query_log
 drop table t1;
 
 #