e2829b7b87
Removing too strong assertion about array allocation in LibraryCallKit::tightly_coupled_allocation(). Reviewed-by: thartmann, neliasso
59 lines
2.2 KiB
Java
59 lines
2.2 KiB
Java
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8237945
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* @summary Test that triggers the too strong assertion "just_allocated_object(alloc_ctl) == ptr" in LibraryCallKit::tightly_coupled_allocation()
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*
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* @run main/othervm -Xbatch compiler.arraycopy.TestTightlyCoupledAllocationAssert
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*/
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package compiler.arraycopy;
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public class TestTightlyCoupledAllocationAssert {
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static A a;
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static byte[] bArr = new byte[8];
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public static void main(String[] strArr) {
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for (int i = 0; i < 10000; i++ ) {
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test(i % 20);
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}
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}
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public static void test(int i) {
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byte [] bArrLocal = new byte[8]; // (1)
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if (i < 16) {
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a = new A(); // (2)
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return;
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}
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// The assertion "just_allocated_object(alloc_ctl) == ptr" in LibraryCallKit::tightly_coupled_allocation() fails during parsing here since
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// the most recent allocation is (2) and not (1). The earlier bailout checks about the memory state (involving the variable "rawmem") pass
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// because the if branch returns and the memory state from (2) is not merged with the memory state from (1) for the array copy.
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System.arraycopy(bArr, 0, bArrLocal, 0, 8);
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}
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}
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class A { }
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