1 /* 2 * Copyright (c) 2019, 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 /** 25 * @test 26 * @bug 8218227 27 * @summary StringBuilder/StringBuffer constructor throws confusing 28 * NegativeArraySizeException 29 * @requires os.maxMemory >= 6G 30 * @run main/othervm -Xms5G -Xmx5G HugeCapacity 31 * @ignore This test has huge memory requirements 32 */ 33 34 public class HugeCapacity { 35 private static int failures = 0; 36 37 public static void main(String[] args) { 38 testHugeInitialString(); 39 testHugeInitialCharSequence(); 40 if (failures > 0) { 41 throw new RuntimeException(failures + " tests failed"); 42 } 43 } 44 45 private static void testHugeInitialString() { 46 try { 47 String str = "Z".repeat(Integer.MAX_VALUE - 8); 48 StringBuffer sb = new StringBuffer(str); 49 } catch (OutOfMemoryError ignore) { 50 } catch (Throwable unexpected) { 51 unexpected.printStackTrace(); 52 failures++; 53 } 54 } 55 56 private static void testHugeInitialCharSequence() { 57 try { 58 CharSequence seq = new MyHugeCharSeq(); 59 StringBuffer sb = new StringBuffer(seq); 60 } catch (OutOfMemoryError ignore) { 61 } catch (Throwable unexpected) { 62 unexpected.printStackTrace(); 63 failures++; 64 } 65 } 66 67 private static class MyHugeCharSeq implements CharSequence { 68 public char charAt(int i) { 69 throw new UnsupportedOperationException(); 70 } 71 public int length() { return Integer.MAX_VALUE; } 72 public CharSequence subSequence(int st, int e) { 73 throw new UnsupportedOperationException(); 74 } 75 public String toString() { return ""; } 76 } 77 }