bug #9088 (bigint WHERE fails)

mysql-test/r/bigint.result:
  test result
mysql-test/t/bigint.test:
  testcase
sql/item.h:
  unsigned_arg is a separate parameter now
sql/item_cmpfunc.cc:
  we can get unsigned field from the signed Item - from string
  like '1234'

mysql-test/r/bigint.result

@@ -332,3 +332,12 @@ SELECT * FROM t1;
 col1	col2	col3	col4	col5	col6	col7	col8	col9	col10	col11	col12	col13	col14	col15	col16	col17	col18	col19	col20	col21	col22	col23	col24	col25	col26	col27	col28	col29	col30	col31	col32	col33	col34	col35	col36	col37	col38	fix1	fix2	fix3	fix4	fix5	fix6	fix7	fix8	fix9	fix10	fix11	fix12	fix13	fix14	fix15	fix16	fix17	fix18	fix19	fix20	fix21	fix22	fix23	fix24	fix25	fix26	fix27	fix28	fix29	fix30
 9	99	999	9999	99999	999999	9999999	99999999	999999999	9999999999	99999999999	999999999999	9999999999999	99999999999999	999999999999999	9999999999999999	99999999999999999	999999999999999999	9999999999999999999	99999999999999999999	999999999999999999999	9999999999999999999999	99999999999999999999999	999999999999999999999999	9999999999999999999999999	99999999999999999999999999	999999999999999999999999999	9999999999999999999999999999	99999999999999999999999999999	999999999999999999999999999999	9999999999999999999999999999999	99999999999999999999999999999999	999999999999999999999999999999999	9999999999999999999999999999999999	99999999999999999999999999999999999	999999999999999999999999999999999999	9999999999999999999999999999999999999	99999999999999999999999999999999999999	9999999999999999999999999999999999999.9	999999999999999999999999999999999999.99	99999999999999999999999999999999999.999	9999999999999999999999999999999999.9999	999999999999999999999999999999999.99999	99999999999999999999999999999999.999999	9999999999999999999999999999999.9999999	999999999999999999999999999999.99999999	99999999999999999999999999999.999999999	9999999999999999999999999999.9999999999	999999999999999999999999999.99999999999	99999999999999999999999999.999999999999	9999999999999999999999999.9999999999999	999999999999999999999999.99999999999999	99999999999999999999999.999999999999999	9999999999999999999999.9999999999999999	999999999999999999999.99999999999999999	99999999999999999999.999999999999999999	9999999999999999999.9999999999999999999	999999999999999999.99999999999999999999	99999999999999999.999999999999999999999	9999999999999999.9999999999999999999999	999999999999999.99999999999999999999999	99999999999999.999999999999999999999999	9999999999999.9999999999999999999999999	999999999999.99999999999999999999999999	99999999999.999999999999999999999999999	9999999999.9999999999999999999999999999	999999999.99999999999999999999999999999	99999999.999999999999999999999999999999
 DROP TABLE t1;
+create table t1 (bigint_col bigint unsigned);
+insert into t1 values (17666000000000000000);
+select * from t1 where bigint_col=17666000000000000000;
+bigint_col
+17666000000000000000
+select * from t1 where bigint_col='17666000000000000000';
+bigint_col
+17666000000000000000
+drop table t1;

mysql-test/t/bigint.test

@@ -270,3 +270,12 @@ VALUES (9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999,
 
 SELECT * FROM t1;
 DROP TABLE t1;
+
+#bug #9088 BIGINT WHERE CLAUSE
+create table t1 (bigint_col bigint unsigned);
+insert into t1 values (17666000000000000000);
+select * from t1 where bigint_col=17666000000000000000;
+select * from t1 where bigint_col='17666000000000000000';
+drop table t1;
+
+

sql/item.h

@@ -1887,9 +1887,10 @@ class Item_int_with_ref :public Item_int
 {
   Item *ref;
 public:
-  Item_int_with_ref(longlong i, Item *ref_arg) :Item_int(i), ref(ref_arg)
+  Item_int_with_ref(longlong i, Item *ref_arg, my_bool unsigned_arg) :
+    Item_int(i), ref(ref_arg)
   {
-    unsigned_flag= ref_arg->unsigned_flag;
+    unsigned_flag= unsigned_arg;
   }
   int save_in_field(Field *field, bool no_conversions)
   {

sql/item_cmpfunc.cc

@@ -216,7 +216,8 @@ static bool convert_constant_item(THD *thd, Field *field, Item **item)
     field->table->in_use->variables.sql_mode|= MODE_INVALID_DATES;
     if (!(*item)->save_in_field(field, 1) && !((*item)->null_value))
     {
-      Item *tmp=new Item_int_with_ref(field->val_int(), *item);
+      Item *tmp=new Item_int_with_ref(field->val_int(), *item,
+                                      test(field->flags & UNSIGNED_FLAG));
       field->table->in_use->variables.sql_mode= orig_sql_mode;
       if (tmp)
         thd->change_item_tree(item, tmp);