/usr/share/go-1.8/test/chan/select7.go is in golang-1.8-src 1.8.3-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright 2011 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.
// Test select when discarding a value.
package main
import "runtime"
func recv1(c <-chan int) {
<-c
}
func recv2(c <-chan int) {
select {
case <-c:
}
}
func recv3(c <-chan int) {
c2 := make(chan int)
select {
case <-c:
case <-c2:
}
}
func send1(recv func(<-chan int)) {
c := make(chan int)
go recv(c)
runtime.Gosched()
c <- 1
}
func send2(recv func(<-chan int)) {
c := make(chan int)
go recv(c)
runtime.Gosched()
select {
case c <- 1:
}
}
func send3(recv func(<-chan int)) {
c := make(chan int)
go recv(c)
runtime.Gosched()
c2 := make(chan int)
select {
case c <- 1:
case c2 <- 1:
}
}
func main() {
send1(recv1)
send2(recv1)
send3(recv1)
send1(recv2)
send2(recv2)
send3(recv2)
send1(recv3)
send2(recv3)
send3(recv3)
}
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