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// errchk $G -e $D/$F.go
// Copyright 2009 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
var (
cr <-chan int
cs chan<- int
c chan int
)
func main() {
cr = c // ok
cs = c // ok
c = cr // ERROR "illegal types|incompatible|cannot"
c = cs // ERROR "illegal types|incompatible|cannot"
cr = cs // ERROR "illegal types|incompatible|cannot"
cs = cr // ERROR "illegal types|incompatible|cannot"
c <- 0 // ok
ok := c <- 0 // ok
_ = ok
<-c // ok
x, ok := <-c // ok
_, _ = x, ok
cr <- 0 // ERROR "send"
ok = cr <- 0 // ERROR "send"
_ = ok
<-cr // ok
x, ok = <-cr // ok
_, _ = x, ok
cs <- 0 // ok
ok = cs <- 0 // ok
_ = ok
<-cs // ERROR "receive"
x, ok = <-cs // ERROR "receive"
_, _ = x, ok
select {
case c <- 0: // ok
case x := <-c: // ok
_ = x
case cr <- 0: // ERROR "send"
case x := <-cr: // ok
_ = x
case cs <- 0: // ok
case x := <-cs: // ERROR "receive"
_ = x
}
}
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