IncompatibleClassChangeError bug (original) (raw)

forax at univ-mlv.fr forax at univ-mlv.fr
Wed Jul 18 20:52:09 UTC 2018

Ok, great, i see the bug in the code, it inserts the name of the array instead of inserting the component type name.

regards, Rémi

----- Mail original -----

De: "mandy chung" <mandy.chung at oracle.com> À: "Remi Forax" <forax at univ-mlv.fr> Cc: "valhalla-dev" <valhalla-dev at openjdk.java.net> Envoyé: Mercredi 18 Juillet 2018 22:48:49 Objet: Re: IncompatibleClassChangeError bug

Hi Remi,

It's a bug in the InnerClassLambdaMetafactory including an array type in the ValueTypes attribute. I fix it in the fix for JDK-8207790 [1]: http://cr.openjdk.java.net/~mchung/valhalla/webrevs/8207790/webrev.00/ I verified your test that works. Mandy [1] http://mail.openjdk.java.net/pipermail/valhalla-dev/2018-July/004730.html On 7/18/18 1:39 PM, Remi Forax wrote: Hi all, a build from 39a2d3a3b101 breaks my tests with an IncompatibleClassChangeError. I have isolated the issue:

--- import java.util.function.IntFunction; public class ArrayGeneratorBug { _static ByValue class Foo { private final int x; public Foo(int x) { this.x = x; } } private static T[] gen(IntFunction<T[]> arrayCreator) { return arrayCreator.apply(0); } public static void main(String[] args) { Foo[] array = gen(Foo[]::new); System.out.println(array); } } --- At runtime something goes wrong: /usr/jdk/jdk-11-lworld/bin/java -XX:+EnableValhalla ArrayGeneratorBug Exception in thread "main" java.lang.IncompatibleClassChangeError: signature (I)[LArrayGeneratorBug$Foo; inconsistent value type: ArrayGeneratorBug$$Lambda$1/0x0000000800060840 ArrayGeneratorBug at ArrayGeneratorBug.gen(ArrayGeneratorBug.java:14) at ArrayGeneratorBug.main(ArrayGeneratorBug.java:18) regards, Rémi

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