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8292975: javac produces code that crashes with LambdaConversionException

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8269983: BootstrapMethodError with method reference and intersection type

Reviewed-by: dlsmith, vromero
This commit is contained in:
Srikanth Adayapalam 2022-10-07 04:20:40 +00:00
parent f3a44a4835
commit cf84c8eaf2
3 changed files with 107 additions and 1 deletions
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3
src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java
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@ -2309,7 +2309,8 @@ public class LambdaToMethod extends TreeTranslator {
List<Type> tl = tree.getDescriptorType(types).getParameterTypes();
for (; tl.nonEmpty(); tl = tl.tail) {
Type pt = tl.head;
return isIntersectionOrUnionType(pt);
if (isIntersectionOrUnionType(pt))
return true;
}
return false;
}

51
test/langtools/tools/javac/lambda/methodReference/IntersectionParameterTypeTest.java Normal file
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@ -0,0 +1,51 @@
/*
* Copyright (c) 2022, 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 8292975
* @summary Javac produces code that crashes with LambdaConversionException
* @run main IntersectionParameterTypeTest
*/
import java.util.function.BiFunction;
public class IntersectionParameterTypeTest {
sealed interface Term {
record Lit() implements Term {}
record Lam(String x, Term a) implements Term {}
}
public static <U, T> void call(BiFunction<U, T, T> op, U x, T t) {
op.apply(x, t);
}
public static void main(String[] args) {
// this code works
call(Term.Lam::new, "x", (Term) new Term.Lit());
// this does not
call(Term.Lam::new, "x", new Term.Lit());
}
}

54
test/langtools/tools/javac/lambda/methodReference/IntersectionParameterTypeTest2.java Normal file
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@ -0,0 +1,54 @@
/*
* Copyright (c) 2022, 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 8269983
* @summary BootstrapMethodError with method reference and intersection type
* @run main IntersectionParameterTypeTest2
*/
public class IntersectionParameterTypeTest2 {
public static void main(String[] args) {
f();
}
static <T extends Comparable<T> & G> C<T> f() {
return new C<>(Q::g);
}
public interface G {}
private interface E<T> {
void g(Q g, T value);
}
static class C<T extends Comparable<?>> {
C(E<T> g) {}
}
static class Q {
void g(G g) {}
}
}