mirror of
https://github.com/golang/go
synced 2024-11-18 01:04:48 -07:00
63 lines
1.2 KiB
Go
63 lines
1.2 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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package main
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type Element interface {
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}
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type Vector struct {
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nelem int;
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elem *[]Element;
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}
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func New() *Vector {
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v := new(Vector);
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v.nelem = 0;
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v.elem = new([10]Element);
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return v;
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}
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func (v *Vector) At(i int) Element {
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return v.elem[i];
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}
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func (v *Vector) Insert(e Element) {
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v.elem[v.nelem] = e;
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v.nelem++;
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}
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type I struct { val int; }; // BUG: can't be local;
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func main() {
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i0 := new(I); i0.val = 0;
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i1 := new(I); i1.val = 11;
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i2 := new(I); i2.val = 222;
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i3 := new(I); i3.val = 3333;
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i4 := new(I); i4.val = 44444;
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v := New();
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print "hi\n";
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v.Insert(i4);
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v.Insert(i3);
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v.Insert(i2);
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v.Insert(i1);
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v.Insert(i0);
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for i := 0; i < v.nelem; i++ {
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var x *I;
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x = v.At(i);
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print i, " ", x.val, "\n"; // prints correct list
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}
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for i := 0; i < v.nelem; i++ {
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print i, " ", I(v.At(i)).val, "\n"; // always prints 5 - bad code - should be *I()
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}
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}
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/*
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bug027.go:50: illegal types for operand
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(<Element>I{}) CONV (<I>{})
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bug027.go:50: illegal types for operand
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(<Element>I{}) CONV (<I>{})
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*/
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