bf22f82207
Fix Parse::Block::init_graph() to also count predecessors for exception blocks because they can have a direct bytecode jump to them resulting in this assertion failure. Reviewed-by: kvn, thartmann
47 lines
1.9 KiB
Java
47 lines
1.9 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 8244719
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* @summary Tests custom bytecode with an explicit entry (fall through or jump) to an exception block which was unexpected for C2 parsing.
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*
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* @compile TestExceptionBlockWithPredecessors.jasm
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* @run main/othervm -Xbatch -XX:CompileCommand=dontinline,compiler.parsing.TestExceptionBlockWithPredecessors::*
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* compiler.parsing.TestExceptionBlockWithPredecessorsMain
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*/
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package compiler.parsing;
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public class TestExceptionBlockWithPredecessorsMain {
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public static void main(String[] args) {
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TestExceptionBlockWithPredecessors t = new TestExceptionBlockWithPredecessors();
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for (int i = 0; i < 10000; i++) {
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t.loopCounter = (i % 2 == 0) ? 0 : 10;
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t.switchOn = (i % 2 == 0) ? 2 : 3;
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t.test(); // Triggers assertion failure
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t.testWorksWithoutPreds(); // Works since no predecessors for exception handler
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}
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}
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}
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