Fix for bug #9894 (Negative numbers are allowed to 'unsigned' column)

mysql-test/r/type_decimal.result:
  test result fixed
mysql-test/r/type_newdecimal.result:
  test result fixed
mysql-test/t/type_newdecimal.test:
  test case added
sql/field.cc:
  We need to refuse negative integers when 'unsigned'

mysql-test/r/type_decimal.result

@@ -414,8 +414,8 @@ Warning	1264	Out of range value adjusted for column 'a' at row 2
 Warning	1264	Out of range value adjusted for column 'a' at row 7
 select * from t1;
 a
-9999999999
-9999999999
+0
+0
 1
 1
 1
@@ -430,8 +430,8 @@ Warning	1264	Out of range value adjusted for column 'a' at row 2
 Warning	1264	Out of range value adjusted for column 'a' at row 7
 select * from t1;
 a
-9999999999
-9999999999
+0000000000
+0000000000
 0000000001
 0000000001
 0000000001
@@ -446,8 +446,8 @@ Warning	1264	Out of range value adjusted for column 'a' at row 2
 Warning	1264	Out of range value adjusted for column 'a' at row 7
 select * from t1;
 a
-9999999999
-9999999999
+0000000000
+0000000000
 0000000001
 0000000001
 0000000001

mysql-test/r/type_newdecimal.result

@@ -119,7 +119,7 @@ a
 99.99
 99.99
 99.99
-99.99
+0.00
 0.00
 0.00
 0.00
@@ -891,3 +891,8 @@ NULL
 select abs(NULL);
 abs(NULL)
 NULL
+set @@sql_mode='traditional';
+create table t1( d1 decimal(18) unsigned, d2 decimal(20) unsigned, d3 decimal (22) unsigned);
+insert into t1 values(1,-1,-1);
+ERROR 22003: Out of range value adjusted for column 'd2' at row 1
+drop table t1;

mysql-test/t/type_newdecimal.test

@@ -925,3 +925,12 @@ DROP TABLE t1;
 
 select abs(10/0);
 select abs(NULL);
+
+#
+# Bug #9894 (negative to unsigned column)
+#
+set @@sql_mode='traditional';
+create table t1( d1 decimal(18) unsigned, d2 decimal(20) unsigned, d3 decimal (22) unsigned);
+--error 1264
+insert into t1 values(1,-1,-1);
+drop table t1;

sql/field.cc

@@ -2446,7 +2446,7 @@ int Field_new_decimal::store(longlong nr)
   int err;
 
   if ((err= int2my_decimal(E_DEC_FATAL_ERROR & ~E_DEC_OVERFLOW,
-                           nr, unsigned_flag, &decimal_value)))
+                           nr, false, &decimal_value)))
   {
     if (check_overflow(err))
       set_value_on_overflow(&decimal_value, decimal_value.sign());