1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 * @bug 7129312 26 * @summary BufferedInputStream calculates negative array size with large 27 * streams and mark 28 * @library /lib/testlibrary 29 * @build jdk.testlibrary.* 30 * @run main/othervm LargeCopyWithMark 31 */ 32 33 import java.io.BufferedInputStream; 34 import java.io.IOException; 35 import java.io.InputStream; 36 import java.io.OutputStream; 37 import static jdk.testlibrary.ProcessTools.*; 38 39 40 public class LargeCopyWithMark { 41 42 public static void main(String[] args) throws Exception { 43 if (! System.getProperty("os.arch").contains("64")) { 44 System.out.println("Test runs on 64 bit platforms"); 45 return; 46 } 47 ProcessBuilder pb = createJavaProcessBuilder("-Xmx4G", 48 "-ea:LargeCopyWithMark$Child", 49 "LargeCopyWithMark$Child"); 50 int res = pb.inheritIO().start().waitFor(); 51 if (res != 0) { 52 throw new AssertionError("Test failed: exit code = " + res); 53 } 54 } 55 56 public static class Child { 57 static final int BUFF_SIZE = 8192; 58 static final int BIS_BUFF_SIZE = Integer.MAX_VALUE / 2 + 100; 59 static final long BYTES_TO_COPY = 2L * Integer.MAX_VALUE; 60 61 static { 62 assert BIS_BUFF_SIZE * 2 < 0 : "doubling must overflow"; 63 } 64 65 public static void main(String[] args) throws Exception { 66 byte[] buff = new byte[BUFF_SIZE]; 67 68 try (InputStream myis = new MyInputStream(BYTES_TO_COPY); 69 InputStream bis = new BufferedInputStream(myis, BIS_BUFF_SIZE); 70 OutputStream myos = new MyOutputStream()) { 71 72 // will require a buffer bigger than BIS_BUFF_SIZE 73 bis.mark(BIS_BUFF_SIZE + 100); 74 75 for (;;) { 76 int count = bis.read(buff, 0, BUFF_SIZE); 77 if (count == -1) 78 break; 79 myos.write(buff, 0, count); 80 } 81 } catch (java.lang.NegativeArraySizeException e) { 82 e.printStackTrace(); 83 System.exit(11); 84 } catch (Exception e) { 85 e.printStackTrace(); 86 } 87 } 88 } 89 } 90 91 class MyInputStream extends InputStream { 92 private long bytesLeft; 93 public MyInputStream(long bytesLeft) { 94 this.bytesLeft = bytesLeft; 95 } 96 @Override public int read() throws IOException { 97 return 0; 98 } 99 @Override public int read(byte[] b) throws IOException { 100 return read(b, 0, b.length); 101 } 102 @Override public int read(byte[] b, int off, int len) throws IOException { 103 if (bytesLeft <= 0) 104 return -1; 105 long result = Math.min(bytesLeft, (long)len); 106 bytesLeft -= result; 107 return (int)result; 108 } 109 @Override public int available() throws IOException { 110 return (bytesLeft > 0) ? 1 : 0; 111 } 112 } 113 114 class MyOutputStream extends OutputStream { 115 @Override public void write(int b) throws IOException {} 116 @Override public void write(byte[] b) throws IOException {} 117 @Override public void write(byte[] b, int off, int len) throws IOException {} 118 }