| /* |
| * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * @bug 7129312 |
| * @summary BufferedInputStream calculates negative array size with large |
| * streams and mark |
| * @library /lib/testlibrary |
| * @build jdk.testlibrary.* |
| * @run main/othervm LargeCopyWithMark |
| */ |
| |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import static jdk.testlibrary.ProcessTools.*; |
| |
| |
| public class LargeCopyWithMark { |
| |
| public static void main(String[] args) throws Exception { |
| if (! System.getProperty("os.arch").contains("64")) { |
| System.out.println("Test runs on 64 bit platforms"); |
| return; |
| } |
| ProcessBuilder pb = createJavaProcessBuilder("-Xmx4G", |
| "-ea:LargeCopyWithMark$Child", |
| "LargeCopyWithMark$Child"); |
| int res = pb.inheritIO().start().waitFor(); |
| if (res != 0) { |
| throw new AssertionError("Test failed: exit code = " + res); |
| } |
| } |
| |
| public static class Child { |
| static final int BUFF_SIZE = 8192; |
| static final int BIS_BUFF_SIZE = Integer.MAX_VALUE / 2 + 100; |
| static final long BYTES_TO_COPY = 2L * Integer.MAX_VALUE; |
| |
| static { |
| assert BIS_BUFF_SIZE * 2 < 0 : "doubling must overflow"; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| byte[] buff = new byte[BUFF_SIZE]; |
| |
| try (InputStream myis = new MyInputStream(BYTES_TO_COPY); |
| InputStream bis = new BufferedInputStream(myis, BIS_BUFF_SIZE); |
| OutputStream myos = new MyOutputStream()) { |
| |
| // will require a buffer bigger than BIS_BUFF_SIZE |
| bis.mark(BIS_BUFF_SIZE + 100); |
| |
| for (;;) { |
| int count = bis.read(buff, 0, BUFF_SIZE); |
| if (count == -1) |
| break; |
| myos.write(buff, 0, count); |
| } |
| } catch (java.lang.NegativeArraySizeException e) { |
| e.printStackTrace(); |
| System.exit(11); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |
| |
| class MyInputStream extends InputStream { |
| private long bytesLeft; |
| public MyInputStream(long bytesLeft) { |
| this.bytesLeft = bytesLeft; |
| } |
| @Override public int read() throws IOException { |
| return 0; |
| } |
| @Override public int read(byte[] b) throws IOException { |
| return read(b, 0, b.length); |
| } |
| @Override public int read(byte[] b, int off, int len) throws IOException { |
| if (bytesLeft <= 0) |
| return -1; |
| long result = Math.min(bytesLeft, (long)len); |
| bytesLeft -= result; |
| return (int)result; |
| } |
| @Override public int available() throws IOException { |
| return (bytesLeft > 0) ? 1 : 0; |
| } |
| } |
| |
| class MyOutputStream extends OutputStream { |
| @Override public void write(int b) throws IOException {} |
| @Override public void write(byte[] b) throws IOException {} |
| @Override public void write(byte[] b, int off, int len) throws IOException {} |
| } |