mirror of
https://github.com/golang/go
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83 lines
1.4 KiB
Go
83 lines
1.4 KiB
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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// Check methods derived from embedded interface and *interface values.
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package main
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import "os"
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const Value = 1e12
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type Inter interface { M() int64 }
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type T int64
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func (t T) M() int64 { return int64(t) }
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var t = T(Value)
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var pt = &t
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var ti Inter = t
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var pti = &ti
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type S struct { Inter }
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var s = S{ ti }
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var ps = &s
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type SP struct { *Inter }
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var sp = SP{ &ti }
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var psp = &sp
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var i Inter
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var pi = &i
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var ok = true
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func check(v int64, s string) {
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if v != Value {
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println(s, v);
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ok = false;
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}
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}
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func main() {
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check(t.M(), "t.M");
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check(pt.M(), "pt.M");
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check(ti.M(), "ti.M");
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check(pti.M(), "pti.M");
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check(s.M(), "s.M");
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check(ps.M(), "ps.M");
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check(sp.M(), "sp.M");
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check(psp.M(), "psp.M");
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i = t;
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check(i.M(), "i.M - i = t");
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check(pi.M(), "pi.M - i = t");
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i = pt;
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check(i.M(), "i.M - i = pt");
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check(pi.M(), "pi.M - i = pt");
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i = s;
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check(i.M(), "i.M - i = s");
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check(pi.M(), "pi.M - i = s");
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i = ps;
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check(i.M(), "i.M - i = ps");
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check(pi.M(), "pi.M - i = ps");
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i = sp;
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check(i.M(), "i.M - i = sp");
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check(pi.M(), "pi.M - i = sp");
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i = psp;
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check(i.M(), "i.M - i = psp");
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check(pi.M(), "pi.M - i = psp");
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if !ok {
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println("BUG: interface10");
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os.Exit(1)
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}
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}
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