From c0eefc0ee055ae727126703888fa4018fbe5a025 Mon Sep 17 00:00:00 2001
From: Artemij Shepelev <ffelian@gmail.com>
Date: Fri, 29 Jun 2018 16:48:08 +0300
Subject: [PATCH] fix (https://github.com/jinzhu/gorm/issues/1407)

---
 model_struct.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/model_struct.go b/model_struct.go
index f571e2e8..1089a380 100644
--- a/model_struct.go
+++ b/model_struct.go
@@ -46,10 +46,15 @@ type ModelStruct struct {
 	StructFields     []*StructField
 	ModelType        reflect.Type
 	defaultTableName string
+
+	l sync.Mutex
 }
 
 // TableName get model's table name
 func (s *ModelStruct) TableName(db *DB) string {
+	s.l.Lock()
+	defer s.l.Unlock()
+
 	if s.defaultTableName == "" && db != nil && s.ModelType != nil {
 		// Set default table name
 		if tabler, ok := reflect.New(s.ModelType).Interface().(tabler); ok {