mirror of
https://github.com/golang/go
synced 2024-11-22 11:14:47 -07:00
bee2d5b0ad
Implies no embedding of pointer to interface value either. R=gri, iant, ken2, r, r2 CC=golang-dev https://golang.org/cl/2289041
71 lines
1.2 KiB
Go
71 lines
1.2 KiB
Go
// 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.
|
|
|
|
// Check methods derived from embedded interface and *interface values.
|
|
|
|
package main
|
|
|
|
import "os"
|
|
|
|
const Value = 1e12
|
|
|
|
type Inter interface { M() int64 }
|
|
|
|
type T int64
|
|
func (t T) M() int64 { return int64(t) }
|
|
var t = T(Value)
|
|
var pt = &t
|
|
var ti Inter = t
|
|
var pti = &ti
|
|
|
|
type S struct { Inter }
|
|
var s = S{ ti }
|
|
var ps = &s
|
|
|
|
type SP struct { *Inter } // ERROR "interface"
|
|
|
|
var i Inter
|
|
var pi = &i
|
|
|
|
var ok = true
|
|
|
|
func check(s string, v int64) {
|
|
if v != Value {
|
|
println(s, v)
|
|
ok = false
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
check("t.M()", t.M())
|
|
check("pt.M()", pt.M())
|
|
check("ti.M()", ti.M())
|
|
check("pti.M()", pti.M()) // ERROR "method"
|
|
check("s.M()", s.M())
|
|
check("ps.M()", ps.M())
|
|
|
|
i = t
|
|
check("i = t; i.M()", i.M())
|
|
check("i = t; pi.M()", pi.M()) // ERROR "method"
|
|
|
|
i = pt
|
|
check("i = pt; i.M()", i.M())
|
|
check("i = pt; pi.M()", pi.M()) // ERROR "method"
|
|
|
|
i = s
|
|
check("i = s; i.M()", i.M())
|
|
check("i = s; pi.M()", pi.M()) // ERROR "method"
|
|
|
|
i = ps
|
|
check("i = ps; i.M()", i.M())
|
|
check("i = ps; pi.M()", pi.M()) // ERROR "method"
|
|
|
|
if !ok {
|
|
println("BUG: interface10")
|
|
os.Exit(1)
|
|
}
|
|
}
|