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https://issues.apache.org/jira/browse/GROOVY-10503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17496082#comment-17496082
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Eric Milles commented on GROOVY-10503:
--------------------------------------
Groovy 2.5.16 only just received Java 15 support. I think Java 16+ is best left
to Groovy 3+.
> Embed ASM 9.2 in Groovy 2.5.x
> -----------------------------
>
> Key: GROOVY-10503
> URL: https://issues.apache.org/jira/browse/GROOVY-10503
> Project: Groovy
> Issue Type: Improvement
> Components: Compiler
> Affects Versions: 2.5.15
> Reporter: Alexander Kriegisch
> Priority: Major
> Fix For: 2.5.x
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When compiling Groovy scripts in a Groovy project running under JDK 16+,
> there are error messages like:
> {code:groovy}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> General error during class generation: Unsupported class file major version 61
> java.lang.IllegalArgumentException: Unsupported class file major version 61
> at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:196)
> at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:177)
> at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:163)
> at groovyjarjarasm.asm.ClassReader.<init>(ClassReader.java:284)
> at
> org.codehaus.groovy.ast.decompiled.AsmDecompiler.parseClass(AsmDecompiler.java:81)
> at
> org.codehaus.groovy.control.ClassNodeResolver.findDecompiled(ClassNodeResolver.java:251)
> at
> org.codehaus.groovy.control.ClassNodeResolver.tryAsLoaderClassOrScript(ClassNodeResolver.java:189)
> at
> org.codehaus.groovy.control.ClassNodeResolver.findClassNode(ClassNodeResolver.java:169)
> at
> org.codehaus.groovy.control.ClassNodeResolver.resolveName(ClassNodeResolver.java:125)
> at
> org.codehaus.groovy.ast.decompiled.AsmReferenceResolver.resolveClassNullable(AsmReferenceResolver.java:57)
> at
> org.codehaus.groovy.ast.decompiled.AsmReferenceResolver.resolveClass(AsmReferenceResolver.java:44)
> at
> org.codehaus.groovy.ast.decompiled.AsmReferenceResolver.resolveNonArrayType(AsmReferenceResolver.java:79)
> at
> org.codehaus.groovy.ast.decompiled.AsmReferenceResolver.resolveType(AsmReferenceResolver.java:70)
> at
> org.codehaus.groovy.ast.decompiled.MemberSignatureParser.createMethodNode(MemberSignatureParser.java:57)
> at
> org.codehaus.groovy.ast.decompiled.DecompiledClassNode$2.get(DecompiledClassNode.java:234)
> at
> org.codehaus.groovy.ast.decompiled.DecompiledClassNode$2.get(DecompiledClassNode.java:231)
> at
> org.codehaus.groovy.ast.decompiled.DecompiledClassNode.createMethodNode(DecompiledClassNode.java:242)
> at
> org.codehaus.groovy.ast.decompiled.DecompiledClassNode.lazyInitMembers(DecompiledClassNode.java:199)
> at
> org.codehaus.groovy.ast.decompiled.DecompiledClassNode.getDeclaredField(DecompiledClassNode.java:116)
> at
> org.codehaus.groovy.classgen.Verifier.getMetaClassField(Verifier.java:195)
> at
> org.codehaus.groovy.classgen.Verifier.addGroovyObjectInterfaceAndMethods(Verifier.java:411)
> at org.codehaus.groovy.classgen.Verifier.visitClass(Verifier.java:246)
> at
> org.codehaus.groovy.control.CompilationUnit$18.call(CompilationUnit.java:811)
> at
> org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1084)
> at
> org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:640)
> at
> org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:618)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:595)
> at
> groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:401)
> at groovy.lang.GroovyClassLoader.access$300(GroovyClassLoader.java:89)
> at groovy.lang.GroovyClassLoader$5.provide(GroovyClassLoader.java:341)
> at groovy.lang.GroovyClassLoader$5.provide(GroovyClassLoader.java:338)
> at
> org.codehaus.groovy.runtime.memoize.ConcurrentCommonCache.getAndPut(ConcurrentCommonCache.java:147)
> at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:336)
> at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:320)
> at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:262)
> at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:272)
> at groovy.lang.GroovyClassLoader$parseClass$0.call(Unknown Source)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:127)
> at
> spock.util.EmbeddedSpecCompiler.doCompile(EmbeddedSpecCompiler.groovy:101)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:568)
> at
> org.codehaus.groovy.runtime.callsite.PlainObjectMetaMethodSite.doInvoke(PlainObjectMetaMethodSite.java:43)
> at
> org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:190)
> at
> org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:58)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:51)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:156)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:168)
> at
> spock.util.EmbeddedSpecCompiler.compile(EmbeddedSpecCompiler.groovy:76)
> at spock.util.EmbeddedSpecCompiler$compile.call(Unknown Source)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:127)
> at spock.util.EmbeddedSpecRunner.run(EmbeddedSpecRunner.groovy:92)
> at spock.util.EmbeddedSpecRunner$run.call(Unknown Source)
> at
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:127)
> at
> de.scrum_master.gitter.spock.d20210706.EmbeddedSpecRunnerTest.$spock_feature_0_0(EmbeddedSpecRunnerTest.groovy:28)
> {code}
> * Even when setting system property {{groovy.target.bytecode}} to a value
> like {{1.8}} on the command line
> * and using code fully compatible with the target bytecode level,
> * and even though the used {{GroovyClassLoader}} has a
> {{CompilerConfiguration}} with the correct {{targetBytecode}} (I checked,
> printing it before calling the script compiler),
> errors like the above occur, probably because the compiler somehow needs to
> analyse/decompile JRE classes.
> If the embedded ASM version relocated to the {{groovyjarjarasm.asm}} package
> would be upgraded to the current ASM 9.2, I think the problem should go away
> while being fully backwards compatible. I am not asking for target 16 or 17
> compilation support (even though that should in theory be possible, even
> without supporting Java 16/17 source code features), only for the compiler
> being able to at least understand existing Java 16/17 byte code. I am
> assuming this to be trivial to implement and am expecting all existing tests
> to still pass, except maybe for some negative tests testing for the above
> error message, if you have any such tests.
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