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8301025: ClassCastException in switch with generic record

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Reviewed-by: jlahoda
This commit is contained in:
Aggelos Biboudis 2023-02-06 12:24:21 +00:00 committed by Jan Lahoda
parent 371a0c4f88
commit 7ac2079ba7
2 changed files with 46 additions and 1 deletions
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2
src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TransPatterns.java
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@ -334,7 +334,7 @@ public class TransPatterns extends TreeTranslator {
}
JCMethodInvocation componentAccessor =
make.App(make.Select(convert(make.Ident(recordBinding), recordBinding.type), //TODO - cast needed????
component.accessor));
component.accessor)).setType(types.erasure(component.accessor.getReturnType()));
if (deconstructorCalls == null) {
deconstructorCalls = Collections.newSetFromMap(new IdentityHashMap<>());
}

45
test/langtools/tools/javac/T8301025.java Normal file
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@ -0,0 +1,45 @@
/*
* Copyright (c) 2023, 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 8301025
* @enablePreview
* @compile T8301025.java
* @summary ClassCastException in switch with generic record
* @modules jdk.compiler
*/
public class T8301025 {
record TestRecord<T extends String>(T t) {}
public static void main(String argv[]) {
TestRecord r = new TestRecord("a");
switch (r) {
case TestRecord(String cS)-> {
System.out.println("String");
}
case TestRecord(Object cO)->{
System.out.println("Object");
}
}
}
}