Bug #52315: utc_date() crashes when system time > year 2037

            
Some of the server implementations don't support dates later
than 2038 due to the internal time type being 32 bit.
Added checks so that the server will refuse dates that cannot
be handled by either throwing an error when setting date at 
runtime or by refusing to start or shutting down the server if 
the system date cannot be stored in my_time_t.

1 files changed, 5 insertions, 0 deletions

diff --git a/sql/sql_class.h b/sql/sql_class.h
index ac058bca4f9..c195c8be864 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -1707,6 +1707,11 @@ public:
   inline void	end_time()    { safe_time(&start_time); }
   inline void	set_time(time_t t) { time_after_lock=start_time=user_time=t; }
   inline void	lock_time()   { safe_time(&time_after_lock); }
+  /*TODO: this will be obsolete when we have support for 64 bit my_time_t */
+  inline bool	is_valid_time() 
+  { 
+    return (start_time < (time_t) MY_TIME_T_MAX); 
+  }
   inline void	insert_id(ulonglong id_arg)
   {
     last_insert_id= id_arg;