1 files changed, 24 insertions, 0 deletions
diff --git a/src/encoding/binary/binary_test.go b/src/encoding/binary/binary_test.go
index 341cd86766..4e1fb59f03 100644
--- a/src/encoding/binary/binary_test.go
+++ b/src/encoding/binary/binary_test.go
@@ -540,6 +540,30 @@ func testReadInvalidDestination(t *testing.T, order ByteOrder) {
 	}
 }
 
+func TestNoFixedSize(t *testing.T) {
+	type Person struct {
+		Age    int
+		Weight float64
+		Height float64
+	}
+
+	person := Person{
+		Age:    27,
+		Weight: 67.3,
+		Height: 177.8,
+	}
+
+	buf := new(bytes.Buffer)
+	err := Write(buf, LittleEndian, &person)
+	if err == nil {
+		t.Fatal("binary.Write: unexpected success as size of type *binary.Person is not fixed")
+	}
+	errs := "binary.Write: some values are not fixed-sized in type *binary.Person"
+	if err.Error() != errs {
+		t.Fatalf("got %q, want %q", err, errs)
+	}
+}
+
 type byteSliceReader struct {
 	remain []byte
 }