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test: add test case that gofrontend miscompiled

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For #47771

Change-Id: I99dfdd48def756bde68445b50741afd6d86b6cf2
Reviewed-on: https://go-review.googlesource.com/c/go/+/344169
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Ian Lance Taylor 2021-08-21 12:40:25 -07:00
parent 41b99dab0f
commit d37b8dedf7
1 changed files with 19 additions and 0 deletions
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19
test/fixedbugs/issue47771.go Normal file
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// run
// Copyright 2021 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.
// gofrontend miscompiled some cases of append(s, make(typ, ln)...).
package main
var g int
func main() {
a := []*int{&g, &g, &g, &g}
a = append(a[:0], make([]*int, len(a) - 1)...)
if len(a) != 3 || a[0] != nil || a[1] != nil || a[2] != nil {
panic(a)
}
}