| /* |
| * Copyright (c) 2020, 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 8237945 |
| * @summary Test that triggers the too strong assertion "just_allocated_object(alloc_ctl) == ptr" in LibraryCallKit::tightly_coupled_allocation() |
| * |
| * @run main/othervm -Xbatch compiler.arraycopy.TestTightlyCoupledAllocationAssert |
| */ |
| |
| package compiler.arraycopy; |
| |
| public class TestTightlyCoupledAllocationAssert { |
| |
| static A a; |
| static byte[] bArr = new byte[8]; |
| |
| public static void main(String[] strArr) { |
| for (int i = 0; i < 10000; i++ ) { |
| test(i % 20); |
| } |
| } |
| |
| public static void test(int i) { |
| byte [] bArrLocal = new byte[8]; // (1) |
| if (i < 16) { |
| a = new A(); // (2) |
| return; |
| } |
| // The assertion "just_allocated_object(alloc_ctl) == ptr" in LibraryCallKit::tightly_coupled_allocation() fails during parsing here since |
| // the most recent allocation is (2) and not (1). The earlier bailout checks about the memory state (involving the variable "rawmem") pass |
| // because the if branch returns and the memory state from (2) is not merged with the memory state from (1) for the array copy. |
| System.arraycopy(bArr, 0, bArrLocal, 0, 8); |
| } |
| } |
| |
| class A { } |