| // $G $D/$F.go && $L $F.$A && ./$A.out |
| |
| // 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") |
| } |
| } |
