mirror of
https://github.com/golang/go
synced 2024-11-22 05:04:40 -07:00
4100d1a07c
cmp6.go:28:9: error: incompatible types in binary expression cmp6.go:29:9: error: incompatible types in binary expression cmp6.go:40:9: error: incompatible types in binary expression cmp6.go:41:9: error: incompatible types in binary expression cmp6.go:48:9: error: expected integer, floating, complex, string, pointer, boolean, interface, slice, map, channel, or function type R=rsc, r2 CC=golang-dev https://golang.org/cl/4281071
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
// errchk $G -e $D/$F.go
|
|
|
|
// Copyright 2010 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
|
|
|
|
func use(bool) {}
|
|
|
|
type T1 *int
|
|
type T2 *int
|
|
|
|
type T3 struct {}
|
|
|
|
var t3 T3
|
|
|
|
func main() {
|
|
// Arguments to comparison must be
|
|
// assignable one to the other (or vice versa)
|
|
// so chan int can be compared against
|
|
// directional channels but channel of different
|
|
// direction cannot be compared against each other.
|
|
var c1 chan <-int
|
|
var c2 <-chan int
|
|
var c3 chan int
|
|
|
|
use(c1 == c2) // ERROR "invalid operation|incompatible"
|
|
use(c2 == c1) // ERROR "invalid operation|incompatible"
|
|
use(c1 == c3)
|
|
use(c2 == c2)
|
|
use(c3 == c1)
|
|
use(c3 == c2)
|
|
|
|
// Same applies to named types.
|
|
var p1 T1
|
|
var p2 T2
|
|
var p3 *int
|
|
|
|
use(p1 == p2) // ERROR "invalid operation|incompatible"
|
|
use(p2 == p1) // ERROR "invalid operation|incompatible"
|
|
use(p1 == p3)
|
|
use(p2 == p2)
|
|
use(p3 == p1)
|
|
use(p3 == p2)
|
|
|
|
// Comparison of structs should have a good message
|
|
use(t3 == t3) // ERROR "struct|expected"
|
|
}
|