Recursion support made for SP (BUG#10100).

client/mysqltest.c:
  An expected error messages hiding from the log if disable_result_log is in force.
mysql-test/r/sp-dynamic.result:
  The test expanded for case of allowed/disalowed recursion.
mysql-test/r/sp-error.result:
  Error messages changed.
  Test of bug11394() made with allowed recursion.
mysql-test/r/sp.result:
  Tests for recursion.
mysql-test/r/trigger.result:
  Check that triggers are not affected by this patch.
mysql-test/r/variables.result:
  Test of max_sp_recursion_depth variable.
mysql-test/t/sp-dynamic.test:
  The test expanded for case of allowed/disalowed recursion.
mysql-test/t/sp-error.test:
  Error messages changed.
  Test of bug11394() made with allowed recursion.
mysql-test/t/sp.test:
  Tests for recursion.
mysql-test/t/trigger.test:
  Check that triggers are not affected by this patch.
mysql-test/t/variables.test:
  Test of max_sp_recursion_depth variable.
sql/item_func.cc:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.
sql/mysqld.cc:
  max_sp_recursion_depth variable added.
sql/set_var.cc:
  max_sp_recursion_depth variable added.
sql/share/errmsg.txt:
  An error message changed.
  An error message added.
sql/sp.cc:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.
  Temory LEX is allocated on a stack, not on a heap.
  Recursion support added for stored procedures.
sql/sp.h:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.
sql/sp_head.cc:
  Initialization of new sp_head fields to get correct list of instances
    contained one instance only.
  Stack requirement for SP instruction is increased.
  Stack free space is checked before mem root initialisation to avoid
    memory leak.
  Pointer to the free instance management added before and after
    SP execution.
sql/sp_head.h:
  New sp_head variables added to support inst of instances of SP
    for recursion and pointer on ths first free to use instance.
sql/sql_base.cc:
  open_table() consume a lot of stack space so we check free stack space before it.
sql/sql_class.h:
  max_sp_recursion_depth variable added.
sql/sql_parse.cc:
  sp_find_function() and sp_find_procedure() joined to sp_find_routine()
    function as it was mentioned in TODO.

1 files changed, 6 insertions, 3 deletions

diff --git a/mysql-test/r/sp-error.result b/mysql-test/r/sp-error.result
index 50ff7ea264a..ae539e1654c 100644
--- a/mysql-test/r/sp-error.result
+++ b/mysql-test/r/sp-error.result
@@ -708,7 +708,7 @@ return (i in (100, 200, bug11394(i-1), 400));
 end if;
 end|
 select bug11394(2)|
-ERROR HY000: Recursive stored routines are not allowed.
+ERROR HY000: Recursive stored functions and triggers are not allowed.
 drop function bug11394|
 create function bug11394_1(i int) returns int
 begin
@@ -719,7 +719,7 @@ return (select bug11394_1(i-1));
 end if;
 end|
 select bug11394_1(2)|
-ERROR HY000: Recursive stored routines are not allowed.
+ERROR HY000: Recursive stored functions and triggers are not allowed.
 drop function bug11394_1|
 create function bug11394_2(i int) returns int return i|
 select bug11394_2(bug11394_2(10))|
@@ -733,7 +733,10 @@ call bug11394(i - 1,(select 1));
 end if;
 end|
 call bug11394(2, 1)|
-ERROR HY000: Recursive stored routines are not allowed.
+ERROR HY000: Recursive limit 0 (as set by the max_sp_recursion_depth variable) was exceeded for routine bug11394
+set @@max_sp_recursion_depth=10|
+call bug11394(2, 1)|
+set @@max_sp_recursion_depth=default|
 drop procedure bug11394|
 CREATE PROCEDURE BUG_12490() HELP CONTENTS;
 ERROR 0A000: HELP is not allowed in stored procedures