mirror of
https://github.com/golang/go
synced 2024-11-12 03:10:22 -07:00
52 lines
833 B
Go
52 lines
833 B
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import "fmt"
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type Buffer int
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func (*Buffer) Read() {
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}
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type Reader interface { Read() }
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func f() *Buffer {
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return nil
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}
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func g() Reader {
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// implicit interface conversion in assignment during return
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return f()
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}
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func h() (b *Buffer, ok bool) {
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return
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}
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func i() (r Reader, ok bool) {
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// implicit interface conversion in multi-assignment during return
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return h();
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}
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func fmter() (s string, i int, t string) {
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return "%#x %q", 100, "hello"
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}
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func main() {
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b := g();
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bb, ok := b.(*Buffer);
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b, ok = i();
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bb, ok = b.(*Buffer);
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s := fmt.Sprintf(fmter());
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if s != "0x64 \"hello\"" {
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panicln(s);
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}
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}
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