Part of patch for BUG#11986: make sp_head::m_body_begin pointer

private and provide a setter for it. The setter will be used to
construct UTF-query in the following patches.

sql/sp_head.cc

@@ -2053,6 +2053,13 @@ sp_head::set_info(longlong created, longlong modified,
 }
 
 
+void
+sp_head::set_body_begin_ptr(Lex_input_stream *lip, const char *begin_ptr)
+{
+  m_body_begin= begin_ptr;
+}
+
+
 void
 sp_head::set_definer(const char *definer, uint definerlen)
 {

sql/sp_head.h

@@ -178,8 +178,11 @@ public:
   // Pointers set during parsing
   const char *m_param_begin;
   const char *m_param_end;
+
+private:
   const char *m_body_begin;
 
+public:
   /*
     Security context for stored routine which should be run under
     definer privileges.
@@ -297,6 +300,8 @@ public:
   void set_info(longlong created, longlong modified,
 		st_sp_chistics *chistics, ulong sql_mode);
 
+  void set_body_begin_ptr(Lex_input_stream *lip, const char *begin_ptr);
+
   void set_definer(const char *definer, uint definerlen);
   void set_definer(const LEX_STRING *user_name, const LEX_STRING *host_name);
 

sql/sql_yacc.yy

@@ -1872,7 +1872,7 @@ ev_sql_stmt:
             bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
             lex->sphead->m_chistics= &lex->sp_chistics;
 
-            lex->sphead->m_body_begin= lip->get_cpp_ptr();
+            lex->sphead->set_body_begin_ptr(lip, lip->get_cpp_ptr());
           }
           ev_sql_stmt_inner
           {
@@ -2066,7 +2066,7 @@ create_function_tail:
             Lex_input_stream *lip= thd->m_lip;
 
 	    lex->sphead->m_chistics= &lex->sp_chistics;
-            lex->sphead->m_body_begin= lip->get_cpp_tok_start();
+            lex->sphead->set_body_begin_ptr(lip, lip->get_cpp_tok_start());
 	  }
 	  sp_proc_stmt
 	  {
@@ -11489,7 +11489,7 @@ trigger_tail:
 
 	  bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
 	  lex->sphead->m_chistics= &lex->sp_chistics;
-          lex->sphead->m_body_begin= lip->get_cpp_ptr();
+          lex->sphead->set_body_begin_ptr(lip, lip->get_cpp_ptr());
 	}
         sp_proc_stmt /* $16 */
         { /* $17 */
@@ -11592,7 +11592,7 @@ sp_tail:
           Lex_input_stream *lip= thd->m_lip;
 
 	  lex->sphead->m_chistics= &lex->sp_chistics;
-          lex->sphead->m_body_begin= lip->get_cpp_tok_start();
+          lex->sphead->set_body_begin_ptr(lip, lip->get_cpp_tok_start());
 	}
 	sp_proc_stmt
 	{