Some new tests...................

mysql-test/r/derived.result

@@ -40,3 +40,28 @@ a
 select 1 from (select 1);
 1
 1
+drop table if exists t1;
+create table t1(a int not null, t char(8), index(a));
+SELECT * FROM (SELECT * FROM t1) ORDER BY a  ASC LIMIT 0,20;
+a	t
+1	1
+2	2
+3	3
+4	4
+5	5
+6	6
+7	7
+8	8
+9	9
+10	10
+11	11
+12	12
+13	13
+14	14
+15	15
+16	16
+17	17
+18	18
+19	19
+20	20
+drop table if exists  t1;

mysql-test/r/select_found.result

@@ -168,4 +168,14 @@ test2	2	2
 SELECT FOUND_ROWS();
 FOUND_ROWS()
 2
+SELECT SQL_CALC_FOUND_ROWS 1 FROM (SELECT 1) LIMIT 0;
+1
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+1
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 0;
+titre	numeropost	maxnumrep
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+3
 drop table t1;

mysql-test/t/derived.test

@@ -22,3 +22,15 @@ drop table if exists  t1.t2,t3;
 select * from (select 1);
 select a from (select 1 as a);
 select 1 from (select 1);
+drop table if exists t1;
+create table t1(a int not null, t char(8), index(a));
+disable_query_log;
+let $1 = 10000;
+while ($1)
+ {
+  eval insert into t1 values ($1,'$1'); 
+  dec $1;
+ }
+enable_query_log;
+SELECT * FROM (SELECT * FROM t1) ORDER BY a  ASC LIMIT 0,20;
+drop table if exists  t1;
\ No newline at end of file

mysql-test/t/select_found.test

@@ -84,4 +84,8 @@ INSERT INTO t1 (titre,maxnumrep) VALUES
 ('test1','1'),('test2','2'),('test3','3');
 SELECT SQL_CALC_FOUND_ROWS titre,numeropost,maxnumrep FROM t1 WHERE numeropost IN (1,2) ORDER BY maxnumrep DESC LIMIT 0, 1;
 SELECT FOUND_ROWS();
+SELECT SQL_CALC_FOUND_ROWS 1 FROM (SELECT 1) LIMIT 0;
+SELECT FOUND_ROWS();
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 LIMIT 0;
+SELECT FOUND_ROWS();
 drop table t1;