1// run
2
3// Copyright 2016 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7package main
8
9func main() {
10	const fffd = "\uFFFD"
11
12	// runtime.intstring used to convert int64 to rune without checking
13	// for truncation.
14	u := uint64(0x10001f4a9)
15	big := string(u)
16	if big != fffd {
17		panic("big != bad")
18	}
19
20	// cmd/compile used to require integer constants to fit into an "int".
21	const huge = string(1<<100)
22	if huge != fffd {
23		panic("huge != bad")
24	}
25}
26