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cmd/compile: added test to ensure that accidental fix remains

Bug 15141 was apparently fixed by some other change to the
compiler (this is plausible, it was a weird bug dependent
on a particular way of returning a large named array result),
add the test to ensure that it stays fixed.

Updates #15141.

Change-Id: I3d6937556413fab1af31c5a1940e6931563ce2f3
Reviewed-on: https://go-review.googlesource.com/31972
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
David Chase 2016-10-25 11:11:40 -04:00
parent d8f7e4fadb
commit 1986a450dd

View File

@ -0,0 +1,33 @@
// compile
// 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() {
a := f(1, 99)
b := g(0xFFFFFFe, 98)
c := h(0xFFFFFFe, 98)
println(a[1], b[1], c[1], a[0xFFFFFFe], b[0xFFFFFFe], c[0xFFFFFFe])
}
//go:noinline
func f(i, y int) (a [0xFFFFFFF]byte) {
a[i] = byte(y)
return
}
//go:noinline
func g(i, y int) [0xFFFFFFF]byte {
var a [0xFFFFFFF]byte
a[i] = byte(y)
return a
}
//go:noinline
func h(i, y int) (a [0xFFFFFFF]byte) {
a[i] = byte(y)
return a
}