golang issue15039 代码
文件路径：/test/fixedbugs/issue15039.go
/ 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")
}
}