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8296012: jshell crashes on mismatched record pattern
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Reviewed-by: vromero
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biboudis authored and Vicente Romero committed Nov 29, 2022
1 parent ae5b1f7 commit 7af6b4b
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Original file line number Diff line number Diff line change
Expand Up @@ -778,7 +778,10 @@ private Set<Symbol> coveredSymbols(DiagnosticPosition pos, Type targetType,
for (Entry<Symbol, List<JCRecordPattern>> e : deconstructionPatternsBySymbol.entrySet()) {
if (coversDeconstructionFromComponent(pos, targetType, e.getValue(), 0)) {
if (e.getValue().stream().anyMatch(r -> r.nested.size() != r.record.getRecordComponents().size())) {
else if (coversDeconstructionFromComponent(pos, targetType, e.getValue(), 0)) {
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47 changes: 47 additions & 0 deletions test/langtools/jdk/jshell/
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@@ -0,0 +1,47 @@
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
* 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 if you need additional information or have any
* questions.

* @test
* @bug 8296012
* @summary jshell crashes on mismatched record pattern
* @build KullaTesting TestingInputStream
* @run testng Test8296012

import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;

public class Test8296012 extends KullaTesting {

public void test() {
assertEval("record Foo(int x, int y) {}");
assertEvalFail("switch (new Foo(1, 2)) { case Foo(int z) -> z; }");

public void setUp() {
super.setUp(bc -> bc.compilerOptions("--source", System.getProperty("java.specification.version"), "--enable-preview").remoteVMOptions("--enable-preview"));

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