reading float32 from float64 without error

msgpack_reader.go

@@ -255,6 +255,21 @@ func decodeBool(dec *msgpack.Decoder, v *bool) error {
 }
 
 func decodeFloat32(dec *msgpack.Decoder, v *float32) error {
+	code, err := dec.PeekCode()
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	if code == msgpcode.Double {
+		var tmp float64
+		if err := decodeFloat64(dec, &tmp); err != nil {
+			return err
+		}
+
+		*v = float32(tmp)
+		return nil
+	}
+
 	tmp, err := dec.DecodeFloat32()
 	if err != nil {
 		return errors.WithStack(err)