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Source file test/fixedbugs/bug281.go

Documentation: test/fixedbugs

  // run
  
  // Copyright 2010 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.
  
  // https://golang.org/issue/807
  
  package main
  
  type Point struct {
  	X, Y int64
  }
  
  type Rect struct {
  	Min, Max Point
  }
  
  func (p Point) Sub(q Point) Point {
  	return Point{p.X-q.X, p.Y-q.Y}
  }
  
  type Obj struct {
  	bbox Rect
  }
  
  func (o *Obj) Bbox() Rect {
  	return o.bbox
  }
  
  func (o *Obj) Points() [2]Point{
  	return [2]Point{o.bbox.Min, o.bbox.Max}
  }
  
  var x = 0
  
  func main() {
  	o := &Obj{Rect{Point{800, 0}, Point{}}}
  	p := Point{800, 300}
  	q := p.Sub(o.Bbox().Min)
  	if q.X != 0 || q.Y != 300 {
  		println("BUG dot: ", q.X, q.Y)
  		return
  	}
  	
  	q = p.Sub(o.Points()[0])
  	if q.X != 0 || q.Y != 300 {
  		println("BUG index const: ", q.X, q.Y)
  	}
  	
  	q = p.Sub(o.Points()[x])
  	if q.X != 0 || q.Y != 300 {
  		println("BUG index var: ", q.X, q.Y)
  	}
  }
  

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