fixed:panic when create value from nil struct pointer. (#4771)

* fixed:create nil pointer

* fixed:panic when create value from nil struct pointer.

schema/schema.go

@@ -77,7 +77,12 @@ func Parse(dest interface{}, cacheStore *sync.Map, namer Namer) (*Schema, error)
 		return nil, fmt.Errorf("%w: %+v", ErrUnsupportedDataType, dest)
 	}
 
-	modelType := reflect.Indirect(reflect.ValueOf(dest)).Type()
+	value := reflect.ValueOf(dest)
+	if value.Kind() == reflect.Ptr && value.IsNil() {
+		value = reflect.New(value.Type().Elem())
+	}
+	modelType := reflect.Indirect(value).Type()
+
 	if modelType.Kind() == reflect.Interface {
 		modelType = reflect.Indirect(reflect.ValueOf(dest)).Elem().Type()
 	}

tests/create_test.go

@@ -517,3 +517,12 @@ func TestCreateFromSubQuery(t *testing.T) {
 		t.Errorf("invalid insert SQL, got %v", result.Statement.SQL.String())
 	}
 }
+
+func TestCreateNilPointer(t *testing.T) {
+	var user *User
+
+	err := DB.Create(user).Error
+	if err == nil || err != gorm.ErrInvalidValue {
+		t.Fatalf("it is not ErrInvalidValue")
+	}
+}