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8252296: Shenandoah: crash in CallNode::extract_projections

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Reviewed-by: chagedorn
This commit is contained in:
Roland Westrelin 2020-08-25 14:25:53 +02:00
parent c31bcc58b0
commit 84d2c2678a
2 changed files with 50 additions and 1 deletions
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2
src/hotspot/share/opto/callnode.cpp
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@ -874,7 +874,7 @@ void CallNode::extract_projections(CallProjections* projs, bool separate_io_proj
// For Control (fallthrough) and I_O (catch_all_index) we have CatchProj -> Catch -> Proj
projs->fallthrough_proj = pn;
const Node *cn = pn->unique_ctrl_out();
if (cn->is_Catch()) {
if (cn != NULL && cn->is_Catch()) {
ProjNode *cpn = NULL;
for (DUIterator_Fast kmax, k = cn->fast_outs(kmax); k < kmax; k++) {
cpn = cn->fast_out(k)->as_Proj();

49
test/hotspot/jtreg/gc/shenandoah/compiler/TestBarrierExpandCallProjection.java Normal file
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@ -0,0 +1,49 @@
/*
* Copyright (c) 2020, Red Hat, Inc. 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 8252296
* @summary Shenandoah: crash in CallNode::extract_projections
* @requires vm.gc.Shenandoah
*
* @run main/othervm -XX:-BackgroundCompilation -XX:-TieredCompilation -XX:+UseShenandoahGC -XX:CompileOnly=TestBarrierExpandCallProjection::test TestBarrierExpandCallProjection
*
*/
public class TestBarrierExpandCallProjection {
static TestBarrierExpandCallProjection test = new TestBarrierExpandCallProjection();
private int field;
public static void main(String[] args) {
test();
}
private static int test() {
int v = 0;
for (int i = 0; i < 100_000; i++) {
v += test.field;
}
return v;
}
}