mirror of
https://github.com/golang/go
synced 2024-11-22 19:05:01 -07:00
81b46f1bcd
Fixes #4518. R=golang-dev, rsc CC=golang-dev https://golang.org/cl/6932045
68 lines
965 B
Go
68 lines
965 B
Go
// run
|
|
|
|
// Copyright 2012 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.
|
|
|
|
// Issue 4518. In some circumstances "return F(...)"
|
|
// where F has multiple returns is miscompiled by 6g due to
|
|
// bold assumptions in componentgen.
|
|
|
|
package main
|
|
|
|
func DontInline() {}
|
|
|
|
func F(e interface{}) (int, int) {
|
|
DontInline()
|
|
return 3, 7
|
|
}
|
|
|
|
func G() (int, int) {
|
|
DontInline()
|
|
return 3, 7
|
|
}
|
|
|
|
func bogus1(d interface{}) (int, int) {
|
|
switch {
|
|
default:
|
|
return F(d)
|
|
}
|
|
return 0, 0
|
|
}
|
|
|
|
func bogus2() (int, int) {
|
|
switch {
|
|
default:
|
|
return F(3)
|
|
}
|
|
return 0, 0
|
|
}
|
|
|
|
func bogus3(d interface{}) (int, int) {
|
|
switch {
|
|
default:
|
|
return G()
|
|
}
|
|
return 0, 0
|
|
}
|
|
|
|
func bogus4() (int, int) {
|
|
switch {
|
|
default:
|
|
return G()
|
|
}
|
|
return 0, 0
|
|
}
|
|
|
|
func check(a, b int) {
|
|
if a != 3 || b != 7 {
|
|
println(a, b)
|
|
panic("a != 3 || b != 7")
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
check(bogus1(42))
|
|
check(bogus2())
|
|
}
|