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go/test/fixedbugs/issue4518.go
Rémy Oudompheng 81b46f1bcd cmd/6g: fix componentgen for funarg structs.
Fixes #4518.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6932045
2012-12-17 22:29:43 +01:00

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())
}