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With Eclipse Enterprise 2018-12 M2 and OpenJDK 11 I'm implementing `Collection.toArray(T[] array)`, getting my information from a `Stream<>`. @Override public <T> T[] toArray(T[] array) { try (final Stream<FooBar> stream = getStream()) { T[] result = (T[])stream.map(foo::doSomething).toArray(length -> Array.newInstance(array.getClass(), length)); //TODO do other stuff here } } I can't even try this code yet, because Eclipse says "Problem detected during type inference: Unknown error at invocation of toArray(IntFunction<Object[])". (The error log is below. Note that I'm not even using modules.) Turns out of course that the code has an error; it should be something like this: @Override public <T> T[] toArray(T[] array) { try (final Stream<FooBar> stream = getStream()) { T[] result = stream.map(foo::doSomething).toArray(length -> (T[])Array.newInstance(array.getClass(), length)); //TODO do other stuff here } } Still, the point is that the internal parser breaks; it encounters its own error before it can tell me mine. So I thought I'd report it so you can track it down. I hope this is helpful. eclipse.buildId=4.10.0.I20181031-1800 java.version=11 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US Framework arguments: -product org.eclipse.epp.package.jee.product Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product This is a continuation of log file …\.metadata\.bak_0.log Created Time: 2018-11-13 10:08:03.885 org.eclipse.jdt.core Error Tue Nov 13 10:21:45 CST 2018 Unexpected internal error Java Model Exception: Java Model Status [module-info.class [in <default> [in …\.m2\repository\org\ow2\asm\asm\6.0_ALPHA\asm-6.0_ALPHA.jar]] does not exist] at org.eclipse.jdt.internal.core.JavaElement.newNotPresentException(JavaElement.java:573) at org.eclipse.jdt.internal.core.ModularClassFile.getModule(ModularClassFile.java:300) at org.eclipse.jdt.internal.core.PackageFragmentRoot.getSourceModuleDescription(PackageFragmentRoot.java:914) at org.eclipse.jdt.internal.core.PackageFragmentRoot.getModuleDescription(PackageFragmentRoot.java:890) at org.eclipse.jdt.internal.core.JarPackageFragmentRoot.getModuleDescription(JarPackageFragmentRoot.java:321) at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.addModuleClassPathInfo(JavaSearchNameEnvironment.java:195) at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.mapToClassPathLocation(JavaSearchNameEnvironment.java:189) at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.computeClasspathLocations(JavaSearchNameEnvironment.java:134) at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.<init>(JavaSearchNameEnvironment.java:78) at org.eclipse.jdt.internal.core.search.matching.IndexBasedJavaSearchEnvironment.create(IndexBasedJavaSearchEnvironment.java:334) at org.eclipse.jdt.internal.core.search.indexing.SourceIndexer.resolveDocument(SourceIndexer.java:169) at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.resolveDocument(JavaSearchParticipant.java:94) at org.eclipse.jdt.internal.core.search.indexing.IndexManager.indexResolvedDocument(IndexManager.java:552) at org.eclipse.jdt.internal.core.search.indexing.IndexManager$1.execute(IndexManager.java:1071) at org.eclipse.jdt.internal.core.search.processing.JobManager.run(JobManager.java:401) at java.base/java.lang.Thread.run(Thread.java:834)
Can you please attach the complete class as source or perhaps the project itself. I am unable to reproduce (at least with 4.10 M1) after inferring the missing elements such as doSomething, necessary imports.
Please explain in particular, what relation your project has to asm-6.0_ALPHA.jar? Is this a stale maven dependency? Perhaps the ALPHA jar was removed after a release arrived? Even though your own code doesn't use modules (which in Java 11 simply means it lives in the unnamed module), s.t. tries to access asm *as a module*. In case you are unable to provide a full project, these following are of particular interest for investigation: .classpath pom.xml
I'm working on a branch for a few days. Within a week or two I can provide you with the entire public repository after I merge the branch. > Please explain in particular, what relation your project has to asm-6.0_ALPHA.jar? None whatsoever that I know of. I have no idea what that is. I've never seen it before. I simply typed in the line I indicated, and the flyover said an unknown error occurred.
We don't have enough information for investigation. Please re-open if you can provide a sample project demonstrating the issue.
I'm not working on this project at the moment, but when I work on it again I'll let you know if there are any problems. > Please explain in particular, what relation your project has to > asm-6.0_ALPHA.jar? Just to follow up, this project was using an old version of cglib, which probably had a dependency to some old version of ASM (whatever that is). This may not even be relevant anymore. But if it is, I'll let you know. Thanks!
