diff options
Diffstat (limited to 'src/encoding/json/decode.go')
| -rw-r--r-- | src/encoding/json/decode.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/encoding/json/decode.go b/src/encoding/json/decode.go index 4f98916105..536f25dc7c 100644 --- a/src/encoding/json/decode.go +++ b/src/encoding/json/decode.go @@ -707,6 +707,19 @@ func (d *decodeState) object(v reflect.Value) { for _, i := range f.index { if subv.Kind() == reflect.Ptr { if subv.IsNil() { + // If a struct embeds a pointer to an unexported type, + // it is not possible to set a newly allocated value + // since the field is unexported. + // + // See https://golang.org/issue/21357 + if !subv.CanSet() { + d.saveError(fmt.Errorf("json: cannot set embedded pointer to unexported struct: %v", subv.Type().Elem())) + // Invalidate subv to ensure d.value(subv) skips over + // the JSON value without assigning it to subv. + subv = reflect.Value{} + destring = false + break + } subv.Set(reflect.New(subv.Type().Elem())) } subv = subv.Elem() |