Guice: WARNING: An illegal reflective access operation has occurred

Created on 18 Oct 2018  路  10Comments  路  Source: google/guice

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/C:/Users/javie/.m2/repository/com/google/inject/guice/4.2.1/guice-4.2.1.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

This warning appears on my project when I compile it. I'm using Guice 4.2.1 (maven) and JDK 10
I checked the Travis builds and it seems that the warning appears on travis CI also:

https://travis-ci.org/google/guice/jobs/440573805#L1747

Is there any quickfix?

Most helpful comment

Greetings,
Out team is getting this error when starting our guice-based applications:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/home/raw/lib/guice-4.2.2.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

So far, this hasn't caused any issues, but we are a bit concerned, given the rate at which OpenJDK updates are becoming more restrictive/secure.

We are running a docker image with the following:
base image: Ubuntu 18.04
java version: OpenJDK_11.0.5.10 (AdoptOpenJDK)
gradle version: 5.4.1
guice version: 4.2.2

All 10 comments

Duplicate of #1133

JDK 10 is still a half baked jvm so I highly recommend moving across, in JDK 10 though with Guice 4.2 i didn't experience any of these. java.lang opening also wasn't required on JDK 10 but is on JDK 11

Very easy to fix...
System.setProperty("com.google.inject.internal.cglib.$experimental_asm7", "true");

Then
--add-opens java.base/java.lang=com.google.guice,javassist

I've released the fully modular guice artifacts based on 4.2.2
All extensions as well

0.70.0.1 is busy going to maven central

guice : https://search.maven.org/artifact/com.guicedee.services/guice/

guice extensions all available -

Current site https://guicedee.com/ - Done the pages up to persistence, should have it all done by the weekend.

Hi All,
Getting this error in maven project with test target. Using
JDK 13 (openJDK 13.0.1)
Surefire plugin 3.0.0-M4
Maven version 3.3.9

WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1

@alan-hwp are you using Ubuntu's custom distribution of Maven? The official Maven distribution uses the "no-AOP" build of Guice which doesn't contain any CGLIB code. If you download an official distribution from https://maven.apache.org/ then you shouldn't see the warning.

Greetings,
Out team is getting this error when starting our guice-based applications:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/home/raw/lib/guice-4.2.2.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

So far, this hasn't caused any issues, but we are a bit concerned, given the rate at which OpenJDK updates are becoming more restrictive/secure.

We are running a docker image with the following:
base image: Ubuntu 18.04
java version: OpenJDK_11.0.5.10 (AdoptOpenJDK)
gradle version: 5.4.1
guice version: 4.2.2

Also present in Guice 4.2.3

WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/home/xxxxx/.m2/repository/com/google/inject/guice/4.2.3/guice-4.2.3.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)

Environment:
Ubuntu 20.04.1 LTS
openjdk version "11.0.7" 2020-04-14
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.7+10)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.7+10, mixed mode)


IntelliJ IDEA 2020.2 (Ultimate Edition)
Build #IU-202.6397.94, built on July 27, 2020
Subscription is active until November 13, 2020
Runtime version: 11.0.7+10-b944.20 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Linux 5.4.0-42-generic
GC: ParNew, ConcurrentMarkSweep
Registry: compiler.automake.allow.when.app.running=true
Non-Bundled Plugins: Key Promoter X, Axis TCP Monitor Plugin, com.intellij.kubernetes, aws.toolkit, org.intellij.scala, com.intellij.bigdatatools, com.jetbrains.edu, training
Current Desktop: ubuntu:GNOME


Apache Maven 3.6.3
Maven home: /usr/share/maven
Java version: 11.0.7, vendor: AdoptOpenJDK, runtime: /home/dever/.jabba/jdk/[email protected]
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-42-generic", arch: "amd64", family: "unix"



Stack Trace:

## Stack Trace

com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalStateException: Unable to load cache item

    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2051)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3953)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3976)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4960)
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4966)
    at com.google.inject.internal.FailableCache.get(FailableCache.java:54)
    at com.google.inject.internal.ConstructorInjectorStore.get(ConstructorInjectorStore.java:49)
    at com.google.inject.internal.ConstructorBindingImpl.initialize(ConstructorBindingImpl.java:155)
    at com.google.inject.internal.InjectorImpl.initializeJitBinding(InjectorImpl.java:606)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:943)
    at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:863)
    at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:300)
    at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:231)
    at com.google.inject.internal.InjectorImpl.getInternalFactory(InjectorImpl.java:949)
    at com.google.inject.internal.FactoryProxy.notify(FactoryProxy.java:48)
    at com.google.inject.internal.ProcessedBindingData.runCreationListeners(ProcessedBindingData.java:60)
    at com.google.inject.internal.InternalInjectorCreator.initializeStatically(InternalInjectorCreator.java:135)
    at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:108)
    at com.google.inject.Guice.createInjector(Guice.java:87)
    at com.google.inject.Guice.createInjector(Guice.java:69)
    at com.google.inject.Guice.createInjector(Guice.java:59)
    at dev.logwood.designpatterns.types.structural.proxy.image.ProxyImageTest.<init>(ProxyImageTest.java:15)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at org.junit.platform.commons.util.ReflectionUtils.newInstance(ReflectionUtils.java:511)
    at org.junit.jupiter.engine.execution.ConstructorInvocation.proceed(ConstructorInvocation.java:56)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
    at org.junit.jupiter.api.extension.InvocationInterceptor.interceptTestClassConstructor(InvocationInterceptor.java:72)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:77)
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:333)
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:280)
    at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:77)
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:262)
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:256)
    at java.base/java.util.Optional.orElseGet(Optional.java:369)
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:255)
    at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:29)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:108)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:107)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:71)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:107)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:107)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:75)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
    at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
    at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)
Caused by: java.lang.IllegalStateException: Unable to load cache item
    at com.google.inject.internal.cglib.core.internal.$LoadingCache.createEntry(LoadingCache.java:79)
    at com.google.inject.internal.cglib.core.internal.$LoadingCache.get(LoadingCache.java:34)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:119)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator.create(AbstractClassGenerator.java:294)
    at com.google.inject.internal.cglib.reflect.$FastClass$Generator.create(FastClass.java:65)
    at com.google.inject.internal.BytecodeGen.newFastClassForMember(BytecodeGen.java:258)
    at com.google.inject.internal.BytecodeGen.newFastClassForMember(BytecodeGen.java:207)
    at com.google.inject.internal.DefaultConstructionProxyFactory.create(DefaultConstructionProxyFactory.java:49)
    at com.google.inject.internal.ProxyFactory.create(ProxyFactory.java:156)
    at com.google.inject.internal.ConstructorInjectorStore.createConstructor(ConstructorInjectorStore.java:94)
    at com.google.inject.internal.ConstructorInjectorStore.access$000(ConstructorInjectorStore.java:30)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:38)
    at com.google.inject.internal.ConstructorInjectorStore$1.create(ConstructorInjectorStore.java:34)
    at com.google.inject.internal.FailableCache$1.load(FailableCache.java:43)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3529)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2278)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2155)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2045)
    ... 84 more
Caused by: java.lang.ExceptionInInitializerError
    at com.google.inject.internal.cglib.core.$DuplicatesPredicate.evaluate(DuplicatesPredicate.java:104)
    at com.google.inject.internal.cglib.core.$CollectionUtils.filter(CollectionUtils.java:52)
    at com.google.inject.internal.cglib.reflect.$FastClassEmitter.<init>(FastClassEmitter.java:69)
    at com.google.inject.internal.cglib.reflect.$FastClass$Generator.generateClass(FastClass.java:77)
    at com.google.inject.internal.cglib.core.$DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator.generate(AbstractClassGenerator.java:332)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:96)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94)
    at com.google.inject.internal.cglib.core.internal.$LoadingCache$2.call(LoadingCache.java:54)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at com.google.inject.internal.cglib.core.internal.$LoadingCache.createEntry(LoadingCache.java:61)
    ... 101 more
Caused by: com.google.inject.internal.cglib.core.$CodeGenerationException: java.lang.reflect.InaccessibleObjectException-->Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @6e2829c7
    at com.google.inject.internal.cglib.core.$ReflectUtils.defineClass(ReflectUtils.java:464)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator.generate(AbstractClassGenerator.java:339)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:96)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94)
    at com.google.inject.internal.cglib.core.internal.$LoadingCache$2.call(LoadingCache.java:54)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at com.google.inject.internal.cglib.core.internal.$LoadingCache.createEntry(LoadingCache.java:61)
    at com.google.inject.internal.cglib.core.internal.$LoadingCache.get(LoadingCache.java:34)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:119)
    at com.google.inject.internal.cglib.core.$AbstractClassGenerator.create(AbstractClassGenerator.java:294)
    at com.google.inject.internal.cglib.core.$KeyFactory$Generator.create(KeyFactory.java:221)
    at com.google.inject.internal.cglib.core.$KeyFactory.create(KeyFactory.java:174)
    at com.google.inject.internal.cglib.core.$KeyFactory.create(KeyFactory.java:157)
    at com.google.inject.internal.cglib.core.$KeyFactory.create(KeyFactory.java:149)
    at com.google.inject.internal.cglib.core.$KeyFactory.create(KeyFactory.java:145)
    at com.google.inject.internal.cglib.core.$MethodWrapper.<clinit>(MethodWrapper.java:23)
    ... 112 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @6e2829c7
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:340)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:280)
    at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:198)
    at java.base/java.lang.reflect.Method.setAccessible(Method.java:192)
    at com.google.inject.internal.cglib.core.$ReflectUtils$1.run(ReflectUtils.java:61)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at com.google.inject.internal.cglib.core.$ReflectUtils.<clinit>(ReflectUtils.java:52)
    at com.google.inject.internal.cglib.reflect.$FastClassEmitter.<init>(FastClassEmitter.java:67)
    ... 109 more

馃憢 Hi all, exactly the same problem for me...

Apache Maven 3.6.3
Maven home: /usr/share/maven
Java version: 11.0.9.1, vendor: Ubuntu, runtime: /usr/lib/jvm/java-11-openjdk-amd64
Default locale: fr_FR, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-56-generic", arch: "amd64", family: "unix"
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/usr/share/maven/lib/guice.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Version

  • guice : 4.2.3

Hi @antoinedvd (and anyone else using Ubuntu's build of Maven) this only happens with Ubuntu's build of Maven because they re-bundle it with the AOP enabled Guice jar - the official Apache/Maven distribution ships with the no-AOP Guice jar which does not have this warning.

You can download the official Maven distribution from https://maven.apache.org/download.cgi

Hi @mcculls, you right. Thank you for your advice, it works !

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