t.Fatalf("Unmarshal should have panicked")
}

// The decoder used to hang if decoding into an interface pointing to its own address.
// See golang.org/issues/31740.
func TestUnmarshalRecursivePointer(t *testing.T) {
	var v any
	v = &v
	data := []byte(`{"a": "b"}`)

	if err := Unmarshal(data, v); err != nil {
		t.Fatalf("Unmarshal error: %v", err)
	}
}