8340145: Problem with generic pattern matching results in internal compiler error

Reviewed-by: jlahoda
This commit is contained in:
Aggelos Biboudis 2024-11-20 10:29:45 +00:00
parent cf158bc6cd
commit 3a4a9b7af7
2 changed files with 67 additions and 1 deletions

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@ -910,7 +910,7 @@ public class Flow {
Set<PatternDescription> toAdd = new HashSet<>();
for (Type sup : types.directSupertypes(bpOne.type)) {
ClassSymbol clazz = (ClassSymbol) sup.tsym;
ClassSymbol clazz = (ClassSymbol) types.erasure(sup).tsym;
clazz.complete();

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@ -0,0 +1,66 @@
/*
* Copyright (c) 2024, 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 8340145
* @summary Problem with generic pattern matching results in internal compiler error
* @compile T8340145.java
* @run main T8340145
*/
public class T8340145 {
public static void main(String[] args) {
Option<Integer> optionInteger = new Option.Some<>(21);
Number number = Option.unwrapOrElse(optionInteger, 5.2);
Option2<Impl> optionBound = new Option2.Some<>(new Impl (){});
Bound number2 = Option2.unwrapOrElse(optionBound, new Impl(){});
}
sealed interface Option<T> permits Option.Some, Option.None {
record Some<T>(T value) implements Option<T> {}
record None<T>() implements Option<T> {}
static <T, T2 extends T> T unwrapOrElse(Option<T2> option, T defaultValue) {
return switch (option) {
case Option.Some(T2 value) -> value;
case Option.None<T2> _ -> defaultValue;
};
}
}
interface Bound {}
interface Bound2 {}
static class Impl implements Bound, Bound2 {}
sealed interface Option2<T> permits Option2.Some, Option2.None {
record Some<T>(T value) implements Option2<T> {}
record None<T>() implements Option2<T> {}
static <T extends Bound & Bound2> T unwrapOrElse(Option2<T> option, T defaultValue) {
return switch (option) {
case Option2.Some(T value) -> value;
case Option2.None<T> _ -> defaultValue;
};
}
}
}