// run // Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package main func main() { const fffd = "\uFFFD" // runtime.intstring used to convert int64 to rune without checking // for truncation. u := uint64(0x10001f4a9) big := string(u) if big != fffd { panic("big != bad") } // cmd/compile used to require integer constants to fit into an "int". const huge = string(1<<100) if huge != fffd { panic("huge != bad") } }