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https://github.com/golang/go
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4a1756824f
cmd/go doesn't complain (this is an open issue), but go/types does Change-Id: I2caec1f7aec991a9500d2c3504c29e4ab718c138 Reviewed-on: https://go-review.googlesource.com/3541 Reviewed-by: Alan Donovan <adonovan@google.com>
66 lines
891 B
Go
66 lines
891 B
Go
// run
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Check that these do not use "by value" capturing,
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// because changes are made to the value during the closure.
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package main
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func main() {
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type X struct {
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v int
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}
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var x X
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func() {
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x.v++
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}()
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if x.v != 1 {
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panic("x.v != 1")
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}
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type Y struct {
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X
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}
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var y Y
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func() {
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y.v = 1
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}()
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if y.v != 1 {
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panic("y.v != 1")
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}
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type Z struct {
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a [3]byte
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}
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var z Z
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func() {
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i := 0
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for z.a[1] = 1; i < 10; i++ {
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}
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}()
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if z.a[1] != 1 {
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panic("z.a[1] != 1")
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}
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w := 0
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tmp := 0
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f := func() {
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if w != 1 {
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panic("w != 1")
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}
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}
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func() {
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tmp = w // force capture of w, but do not write to it yet
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_ = tmp
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func() {
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func() {
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w++ // write in a nested closure
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}()
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}()
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}()
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f()
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}
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