MDEV-17798 System variable system_versioning_asof accepts wrong values

mysql-test/suite/versioning/r/sysvars.result

@@ -31,6 +31,14 @@ set global system_versioning_asof= 1;
 ERROR 42000: Incorrect argument type to variable 'system_versioning_asof'
 set global system_versioning_asof= 1.1;
 ERROR 42000: Incorrect argument type to variable 'system_versioning_asof'
+set global system_versioning_asof= '2011-02-29 00:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '2011-02-29 00:00'
+set global system_versioning_asof= '2011-02-28 24:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '2011-02-28 24:00'
+set global system_versioning_asof= '2011-00-28 00:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '2011-00-28 00:00'
+set global system_versioning_asof= '0000-00-00 00:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '0000-00-00 00:00'
 set system_versioning_asof= 'alley';
 ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of 'alley'
 set system_versioning_asof= null;
@@ -39,6 +47,14 @@ set system_versioning_asof= 1;
 ERROR 42000: Incorrect argument type to variable 'system_versioning_asof'
 set system_versioning_asof= 1.1;
 ERROR 42000: Incorrect argument type to variable 'system_versioning_asof'
+set system_versioning_asof= '2011-02-29 00:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '2011-02-29 00:00'
+set system_versioning_asof= '2011-02-28 24:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '2011-02-28 24:00'
+set system_versioning_asof= '2011-00-28 00:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '2011-00-28 00:00'
+set system_versioning_asof= '0000-00-00 00:00';
+ERROR 42000: Variable 'system_versioning_asof' can't be set to the value of '0000-00-00 00:00'
 # GLOBAL @@system_versioning_asof
 set global system_versioning_asof= '1911-11-11 11:11:11.1111119';
 Warnings:

mysql-test/suite/versioning/t/sysvars.test

@@ -23,6 +23,14 @@ set global system_versioning_asof= null;
 set global system_versioning_asof= 1;
 --error ER_WRONG_TYPE_FOR_VAR
 set global system_versioning_asof= 1.1;
+--error ER_WRONG_VALUE_FOR_VAR
+set global system_versioning_asof= '2011-02-29 00:00';
+--error ER_WRONG_VALUE_FOR_VAR
+set global system_versioning_asof= '2011-02-28 24:00';
+--error ER_WRONG_VALUE_FOR_VAR
+set global system_versioning_asof= '2011-00-28 00:00';
+--error ER_WRONG_VALUE_FOR_VAR
+set global system_versioning_asof= '0000-00-00 00:00';
 
 # session
 --error ER_WRONG_VALUE_FOR_VAR
@@ -33,6 +41,14 @@ set system_versioning_asof= null;
 set system_versioning_asof= 1;
 --error ER_WRONG_TYPE_FOR_VAR
 set system_versioning_asof= 1.1;
+--error ER_WRONG_VALUE_FOR_VAR
+set system_versioning_asof= '2011-02-29 00:00';
+--error ER_WRONG_VALUE_FOR_VAR
+set system_versioning_asof= '2011-02-28 24:00';
+--error ER_WRONG_VALUE_FOR_VAR
+set system_versioning_asof= '2011-00-28 00:00';
+--error ER_WRONG_VALUE_FOR_VAR
+set system_versioning_asof= '0000-00-00 00:00';
 
 --echo # GLOBAL @@system_versioning_asof
 set global system_versioning_asof= '1911-11-11 11:11:11.1111119';

sql/sys_vars.ic

@@ -2634,7 +2634,7 @@ public:
     if (!Sys_var_enum::do_check(thd, var))
       return false;
     MYSQL_TIME ltime;
-    bool res= var->value->get_date(&ltime, 0);
+    bool res= var->value->get_date(&ltime, TIME_NO_ZERO_IN_DATE|TIME_NO_ZERO_DATE);
     if (!res)
     {
       var->save_result.ulonglong_value= SYSTEM_TIME_AS_OF;
@@ -2651,7 +2651,7 @@ private:
     {
       if (var->value)
       {
-        res= var->value->get_date(&out.ltime, 0);
+        res= var->value->get_date(&out.ltime, TIME_NO_ZERO_IN_DATE|TIME_NO_ZERO_DATE);
       }
       else // set DEFAULT from global var
       {