In TRADITIONAL mode, don't allow a NOT NULL field with no default be set to

DEFAULT (with no argument) or to the field's type's default by not being
listed in the list of fields being inserted. (Bug #5986)                    

mysql-test/r/strict.result

@@ -921,3 +921,40 @@ col1	col2
 3	
 99	
 DROP TABLE t1;
+SET @@sql_mode = 'traditional';
+CREATE TABLE t1 (i int not null);
+INSERT INTO t1 VALUES ();
+ERROR HY000: Field 'i' doesn't have a default value
+INSERT INTO t1 VALUES (DEFAULT);
+ERROR HY000: Field 'i' doesn't have a default value
+INSERT INTO t1 VALUES (DEFAULT(i));
+ERROR HY000: Field 'i' doesn't have a default value
+ALTER TABLE t1 ADD j int;
+INSERT INTO t1 SET j = 1;
+ERROR HY000: Field 'i' doesn't have a default value
+INSERT INTO t1 SET j = 1, i = DEFAULT;
+ERROR HY000: Field 'i' doesn't have a default value
+INSERT INTO t1 SET j = 1, i = DEFAULT(i);
+ERROR HY000: Field 'i' doesn't have a default value
+INSERT INTO t1 VALUES (DEFAULT,1);
+ERROR HY000: Field 'i' doesn't have a default value
+DROP TABLE t1;
+SET @@sql_mode = '';
+CREATE TABLE t1 (i int not null);
+INSERT INTO t1 VALUES ();
+INSERT INTO t1 VALUES (DEFAULT);
+Warnings:
+Warning	1364	Field 'i' doesn't have a default value
+INSERT INTO t1 VALUES (DEFAULT(i));
+ERROR HY000: Field 'i' doesn't have a default value
+ALTER TABLE t1 ADD j int;
+INSERT INTO t1 SET j = 1;
+INSERT INTO t1 SET j = 1, i = DEFAULT;
+Warnings:
+Warning	1364	Field 'i' doesn't have a default value
+INSERT INTO t1 SET j = 1, i = DEFAULT(i);
+ERROR HY000: Field 'i' doesn't have a default value
+INSERT INTO t1 VALUES (DEFAULT,1);
+Warnings:
+Warning	1364	Field 'i' doesn't have a default value
+DROP TABLE t1;

mysql-test/t/strict.test

@@ -638,3 +638,37 @@ INSERT IGNORE INTO t1 (col1) values (3);
 INSERT IGNORE INTO t1 () values ();
 SELECT * FROM t1;
 DROP TABLE t1;
+
+# Test fields with no default value that are NOT NULL (Bug #5986)
+SET @@sql_mode = 'traditional';
+CREATE TABLE t1 (i int not null);
+--error 1364
+INSERT INTO t1 VALUES ();
+--error 1364
+INSERT INTO t1 VALUES (DEFAULT);
+--error 1364
+INSERT INTO t1 VALUES (DEFAULT(i));
+ALTER TABLE t1 ADD j int;
+--error 1364
+INSERT INTO t1 SET j = 1;
+--error 1364
+INSERT INTO t1 SET j = 1, i = DEFAULT;
+--error 1364
+INSERT INTO t1 SET j = 1, i = DEFAULT(i);
+--error 1364
+INSERT INTO t1 VALUES (DEFAULT,1);
+DROP TABLE t1;
+SET @@sql_mode = '';
+CREATE TABLE t1 (i int not null);
+INSERT INTO t1 VALUES ();
+INSERT INTO t1 VALUES (DEFAULT);
+# DEFAULT(i) is an error even with the default sql_mode
+--error 1364
+INSERT INTO t1 VALUES (DEFAULT(i));
+ALTER TABLE t1 ADD j int;
+INSERT INTO t1 SET j = 1;
+INSERT INTO t1 SET j = 1, i = DEFAULT;
+--error 1364
+INSERT INTO t1 SET j = 1, i = DEFAULT(i);
+INSERT INTO t1 VALUES (DEFAULT,1);
+DROP TABLE t1;

sql/item.cc

@@ -3204,6 +3204,7 @@ bool Item_default_value::fix_fields(THD *thd,
   return FALSE;
 }
 
+
 void Item_default_value::print(String *str)
 {
   if (!arg)
@@ -3216,6 +3217,27 @@ void Item_default_value::print(String *str)
   str->append(')');
 }
 
+
+int Item_default_value::save_in_field(Field *field_arg, bool no_conversions)
+{
+  if (!arg)
+  {
+    if (field_arg->flags & NO_DEFAULT_VALUE_FLAG)
+    {
+      push_warning_printf(field_arg->table->in_use,
+                          MYSQL_ERROR::WARN_LEVEL_WARN,
+                          ER_NO_DEFAULT_FOR_FIELD,
+                          ER(ER_NO_DEFAULT_FOR_FIELD),
+                          field_arg->field_name);
+      return 1;
+    }
+    field_arg->set_default();
+    return 0;
+  }
+  return Item_field::save_in_field(field_arg, no_conversions);
+}
+
+
 bool Item_insert_value::eq(const Item *item, bool binary_cmp) const
 {
   return item->type() == INSERT_VALUE_ITEM &&

sql/item.h

@@ -1316,15 +1316,7 @@ public:
   bool eq(const Item *item, bool binary_cmp) const;
   bool fix_fields(THD *, struct st_table_list *, Item **);
   void print(String *str);
-  int save_in_field(Field *field_arg, bool no_conversions)
-  {
-    if (!arg)
-    {
-      field_arg->set_default();
-      return 0;
-    }
-    return Item_field::save_in_field(field_arg, no_conversions);
-  }
+  int save_in_field(Field *field_arg, bool no_conversions);
   table_map used_tables() const { return (table_map)0L; }
   
   bool walk(Item_processor processor, byte *args)

sql/sql_insert.cc

@@ -311,7 +311,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
                            (MODE_STRICT_TRANS_TABLES |
                             MODE_STRICT_ALL_TABLES)));
 
-  if (fields.elements && check_that_all_fields_are_given_values(thd, table))
+  if ((fields.elements || !value_count) &&
+      check_that_all_fields_are_given_values(thd, table))
   {
     /* thd->net.report_error is now set, which will abort the next loop */
     error= 1;