fix: if default element type of value are setted in slice , raise error

decoder.go

@@ -92,9 +92,9 @@ func (d *Decoder) Decode(dst interface{}, src map[string][]string) error {
  return nil
 }
 
-//setDefaults sets the default values when the `default` tag is specified,
-//default is supported on basic/primitive types and their pointers,
-//nested structs can also have default tags
+// setDefaults sets the default values when the `default` tag is specified,
+// default is supported on basic/primitive types and their pointers,
+// nested structs can also have default tags
 func (d *Decoder) setDefaults(t reflect.Type, v reflect.Value) MultiError {
  struc := d.cache.get(t)
  if struc == nil {
@@ -130,9 +130,12 @@ func (d *Decoder) setDefaults(t reflect.Type, v reflect.Value) MultiError {
  defaultSlice := reflect.MakeSlice(f.typ, 0, cap(vals))
  for _, val := range vals {
  //this check is to handle if the wrong value is provided
- if convertedVal := builtinConverters[f.typ.Elem().Kind()](val); convertedVal.IsValid() {
- defaultSlice = reflect.Append(defaultSlice, convertedVal)
+ convertedVal := builtinConverters[f.typ.Elem().Kind()](val)
+ if !convertedVal.IsValid() {
+ errs.merge(MultiError{"default-" + f.name: errors.New("some elements in the slice are of a different type.")})
+ break
  }
+ defaultSlice = reflect.Append(defaultSlice, convertedVal)
  }
  vCurrent.Set(defaultSlice)
  } else if f.typ.Kind() == reflect.Ptr {