[GROOVY-10194] "PermittedSubclasses requires ASM9" when importing enum on Java 17

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.8
• Fix Version/s: 3.0.9
• Component/s: Compiler
• Assignee: Paul King
• Reporter: Peter Burka
• Created: 10/Aug/21 20:34
• Updated: 03/Feb/22 22:47
• Resolved: 11/Aug/21 03:39

Description

Java 17 (at least as of EA31) is now emitting "PermittedSubclasses" attributes for certain enum classes. When groovyc 3.0.8 encounters these, it crashes with an UnsupportedOperationException.

Test case:

AnEnum.java

public enum AnEnum
{
    ONE() {
        @Override
        public String digit() {
            return "1";
        }
    };

    public abstract String digit();
}

Foo.groovy

import AnEnum

Compile them...

$ jdk-17/bin/javac AnEnum.java 
$ JAVA_HOME=jdk-17 groovy-3.0.8/bin/groovyc Foo.groovy
>>> a serious error occurred: BUG! exception in phase 'semantic analysis' in source unit 'Foo.groovy' PermittedSubclasses requires ASM9
>>> stacktrace:
BUG! exception in phase 'semantic analysis' in source unit 'Foo.groovy' PermittedSubclasses requires ASM9
	at org.codehaus.groovy.control.CompilationUnit$ISourceUnitOperation.doPhaseOperation(CompilationUnit.java:905)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:627)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:610)
	at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:311)
	at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:240)
	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:165)
	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:205)
	at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:189)
	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.tools.GroovyStarter.rootLoader(GroovyStarter.java:111)
	at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:129)
Caused by: java.lang.UnsupportedOperationException: PermittedSubclasses requires ASM9
	at groovyjarjarasm.asm.ClassVisitor.visitPermittedSubclass(ClassVisitor.java:266)
	at groovyjarjarasm.asm.ClassReader.accept(ClassReader.java:683)
	at groovyjarjarasm.asm.ClassReader.accept(ClassReader.java:401)
	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.control.ResolveVisitor.resolveToOuter(ResolveVisitor.java:869)
	at org.codehaus.groovy.control.ResolveVisitor.resolve(ResolveVisitor.java:505)
	at org.codehaus.groovy.control.ResolveVisitor.visitClass(ResolveVisitor.java:1430)
	at org.codehaus.groovy.control.ResolveVisitor.startResolving(ResolveVisitor.java:261)
	at org.codehaus.groovy.control.CompilationUnit.lambda$new$16(CompilationUnit.java:738)
	at org.codehaus.groovy.control.CompilationUnit$ISourceUnitOperation.doPhaseOperation(CompilationUnit.java:901)
	... 13 more

Issue Links

• relates to: GROOVY-10154 Bump asm to 9.2