1 /*
   2  * Copyright 2003-2004 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4921543 5009601
  27  * @summary boxing/unboxing versus foreach crashes javac
  28  * @author gafter
  29  *
  30  * @compile BoxedForeach.java
  31  * @run main BoxedForeach
  32  */
  33 
  34 import java.util.*;
  35 
  36 public class BoxedForeach {
  37     static void f(Integer[] a) {
  38         for ( int i : a ) {
  39             System.out.println(i);
  40         }
  41     }
  42     static void f(Iterable<Integer> b) {
  43         g(b);
  44         h(b);
  45         for ( int i : b ) {
  46             System.out.println(i);
  47         }
  48         for ( float i : b ) {
  49             System.out.println(i);
  50         }
  51         for ( Iterator<Integer> it = b.iterator(); it.hasNext(); ) {
  52             float i = it.next();
  53         }
  54     }
  55     static <T extends Integer> void g(Iterable<T> b) {
  56         for ( int i : b ) {
  57             System.out.println(i);
  58         }
  59     }
  60     static void h(Iterable<? extends Integer> b) {
  61         for ( int i : b ) {
  62             System.out.println(i);
  63         }
  64     }
  65     static void f(int[] c) {
  66         for ( Integer i : c ) {
  67             System.out.println(i);
  68         }
  69     }
  70     static <E extends Enum<E>> void f(E[] values) {
  71         for ( E e : values ) {
  72             System.out.println(e);
  73         }
  74     }
  75     static int f() {
  76         for ( Foo f : foolist() ) {
  77             return f.x;
  78         }
  79         return 0;
  80     }
  81     static List<Foo> foolist() {
  82         List<Foo> l = new ArrayList<Foo>();
  83         l.add(new Foo());
  84         return l;
  85     }
  86     enum color { red, green, blue };
  87     public static void main(String[] args) {
  88         Integer[] a1 = { Integer.valueOf(1), Integer.valueOf(2) };
  89         f(a1);
  90         f(Arrays.asList(a1));
  91         int[] a2 = { 1, 2, 3 };
  92         f(a2);
  93         f(color.values());
  94         f();
  95     }
  96 }
  97 
  98 class Foo {
  99     static int n = 0;
 100     final int x;
 101     Foo() {
 102         x = n++;
 103     }
 104 }
 105 
 106 class A {
 107     class B {
 108     }
 109     java.util.List<String> l;
 110     String[] args;
 111     {
 112         for (String s1 : l) {
 113             for (String s2 : l) {
 114                 B b = new B();
 115             }
 116         }
 117         for (String s1 : args) {
 118             for (String s2 : args) {
 119                 B b = new B();
 120             }
 121         }
 122     }
 123 }