Fixed bug#45445 - cannot execute procedures with thread_stack

set to 128k.

sql/sp.cc:
  Added checking for stack overrun at functions
  db_load_routine/sp_find_routine.
sql/sp_head.cc:
  sp_head::execute() modified: pass constant value STACK_MIN_SIZE
  instead of 8 * STACK_MIN_SIZE  as second argument value
  in call to check_stack_overrun. Added checking for stack overrun
  at functions sp_lex_keeper::reset_lex_and_exec_core/sp_instr_stmt::execute.
sql/sql_parse.cc:
  check_stack_overrun modified: allocate buffer for error message
  at heap instead of stack.
  parse_sql modified: added call to check_stack_overrun() before
  parsing of sql statement.

1 files changed, 6 insertions, 0 deletions

diff --git a/sql/sp.cc b/sql/sp.cc
index 87eb40c29ac..7385a6ffcae 100644
--- a/sql/sp.cc
+++ b/sql/sp.cc
@@ -779,6 +779,9 @@ db_load_routine(THD *thd, int type, sp_name *name, sp_head **sphp,
 
   int ret= 0;
 
+  if (check_stack_overrun(thd, STACK_MIN_SIZE, (uchar*)&ret))
+    return TRUE;
+
   thd->lex= &newlex;
   newlex.current_select= NULL;
 
@@ -1505,6 +1508,9 @@ sp_find_routine(THD *thd, int type, sp_name *name, sp_cache **cp,
                        (int) name->m_name.length, name->m_name.str,
                        type, cache_only));
 
+  if (check_stack_overrun(thd, STACK_MIN_SIZE, (uchar*)&depth))
+    return NULL;
+
   if ((sp= sp_cache_lookup(cp, name)))
   {
     ulong level;