go select8 源码
golang select8 代码
文件路径：/test/chan/select8.go
// run
// Copyright 2019 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 break statements in a select.
// Gccgo had a bug in handling this.
// Test 1,2,3-case selects, so it covers both the general
// code path and the specialized optimizations for one-
// and two-case selects.
package main
var ch = make(chan int)
func main() {
go func() {
for {
ch <- 5
}
}()
select {
case <-ch:
break
panic("unreachable")
}
select {
default:
break
panic("unreachable")
}
select {
case <-ch:
break
panic("unreachable")
default:
break
panic("unreachable")
}
select {
case <-ch:
break
panic("unreachable")
case ch <- 10:
panic("unreachable")
default:
break
panic("unreachable")
}
}
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