explicitly return an error instead of hiding it

Author: lipengwei

bind.go

@@ -145,7 +145,7 @@ func (b *DefaultBinder) bindData(destination interface{}, data map[string][]stri
 		typeField := typ.Field(i)
 		structField := val.Field(i)
 		if typeField.Anonymous {
-			for structField.Kind() == reflect.Ptr {
+			if structField.Kind() == reflect.Ptr {
 				structField = structField.Elem()
 			}
 		}
@@ -155,8 +155,8 @@ func (b *DefaultBinder) bindData(destination interface{}, data map[string][]stri
 		structFieldKind := structField.Kind()
 		inputFieldName := typeField.Tag.Get(tag)
 		if typeField.Anonymous && structField.Kind() == reflect.Struct && inputFieldName != "" {
-			// if anonymous struct, ignore custom tag
-			inputFieldName = ""
+			// if anonymous struct with query/param/form tags, report an error
+			return errors.New("query/param/form tags are not allowed with anonymous struct field")
 		}
 
 		if inputFieldName == "" {

bind_test.go

@@ -370,9 +370,7 @@ func TestBindUnmarshalParamAnonymousFieldPtrCustomTag(t *testing.T) {
 		*Bar `json:"bar" query:"bar"`
 	}{&Bar{}}
 	err := c.Bind(&result)
-	if assert.NoError(t, err) {
-		assert.Equal(t, 1, result.Baz)
-	}
+	assert.Contains(t, err.Error(), "query/param/form tags are not allowed with anonymous struct field")
 }
 
 func TestBindUnmarshalTextPtr(t *testing.T) {