1 files changed, 14 insertions, 8 deletions
diff --git a/libgo/go/encoding/json/encode_test.go b/libgo/go/encoding/json/encode_test.go
index 7abfa85..c00491e 100644
--- a/libgo/go/encoding/json/encode_test.go
+++ b/libgo/go/encoding/json/encode_test.go
@@ -381,16 +381,10 @@ func TestStringBytes(t *testing.T) {
 		r = append(r, i)
 	}
 	s := string(r) + "\xff\xff\xffhello" // some invalid UTF-8 too
-	_, err := es.string(s)
-	if err != nil {
-		t.Fatal(err)
-	}
+	es.string(s)
 
 	esBytes := &encodeState{}
-	_, err = esBytes.stringBytes([]byte(s))
-	if err != nil {
-		t.Fatal(err)
-	}
+	esBytes.stringBytes([]byte(s))
 
 	enc := es.Buffer.String()
 	encBytes := esBytes.Buffer.String()
@@ -443,6 +437,18 @@ func TestIssue6458(t *testing.T) {
 	}
 }
 
+func TestIssue10281(t *testing.T) {
+	type Foo struct {
+		N Number
+	}
+	x := Foo{Number(`invalid`)}
+
+	b, err := Marshal(&x)
+	if err == nil {
+		t.Errorf("Marshal(&x) = %#q; want error", b)
+	}
+}
+
 func TestHTMLEscape(t *testing.T) {
 	var b, want bytes.Buffer
 	m := `{"M":"<html>foo &` + "\xe2\x80\xa8 \xe2\x80\xa9" + `</html>"}`