gcc/testsuite/go.test/test/fixedbugs/bug281.go

   1 // $G $D/$F.go && $L $F.$A && ./$A.out
   2
   3 // Copyright 2010 The Go Authors.  All rights reserved.
   4 // Use of this source code is governed by a BSD-style
   5 // license that can be found in the LICENSE file.
   6
   7 // http://code.google.com/p/go/issues/detail?id=807
   8
   9 package main
  10
  11 type Point struct {
  12         X, Y int64
  13 }
  14
  15 type Rect struct {
  16         Min, Max Point
  17 }
  18
  19 func (p Point) Sub(q Point) Point {
  20         return Point{p.X-q.X, p.Y-q.Y}
  21 }
  22
  23 type Obj struct {
  24         bbox Rect
  25 }
  26
  27 func (o *Obj) Bbox() Rect {
  28         return o.bbox
  29 }
  30
  31 func (o *Obj) Points() [2]Point{
  32         return [2]Point{o.bbox.Min, o.bbox.Max}
  33 }
  34
  35 var x = 0
  36
  37 func main() {
  38         o := &Obj{Rect{Point{800, 0}, Point{}}}
  39         p := Point{800, 300}
  40         q := p.Sub(o.Bbox().Min)
  41         if q.X != 0 || q.Y != 300 {
  42                 println("BUG dot: ", q.X, q.Y)
  43                 return
  44         }
  45
  46         q = p.Sub(o.Points()[0])
  47         if q.X != 0 || q.Y != 300 {
  48                 println("BUG index const: ", q.X, q.Y)
  49         }
  50
  51         q = p.Sub(o.Points()[x])
  52         if q.X != 0 || q.Y != 300 {
  53                 println("BUG index var: ", q.X, q.Y)
  54         }
  55 }