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// run
// 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
import "fmt"
type Buffer int
func (*Buffer) Read() {}
type Reader interface {
Read()
}
func f() *Buffer { return nil }
func g() Reader {
// implicit interface conversion in assignment during return
return f()
}
func h() (b *Buffer, ok bool) { return }
func i() (r Reader, ok bool) {
// implicit interface conversion in multi-assignment during return
return h()
}
func fmter() (s string, i int, t string) { return "%#x %q", 100, "hello" }
func main() {
b := g()
bb, ok := b.(*Buffer)
_, _, _ = b, bb, ok
b, ok = i()
bb, ok = b.(*Buffer)
_, _, _ = b, bb, ok
s := fmt.Sprintf(fmter())
if s != "0x64 \"hello\"" {
println(s)
panic("fail")
}
}
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