[jira] [Commented] (GROOVY-9873) SAM type or functional interface referenced from a method is not visible from class loader

["Eric Milles (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-9873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17255709#comment-17255709 ] 

Eric Milles commented on GROOVY-9873:
-------------------------------------

This also affects earlier Groovy releases when "indy" compiler option is enabled.

> SAM type or functional interface referenced from a method is not visible from class loader
> ------------------------------------------------------------------------------------------
>
>                 Key: GROOVY-9873
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9873
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 2.4.21, 2.5.14, 3.0.7, 4.0.0-alpha-2
>            Reporter: Eric Milles
>            Priority: Major
>              Labels: indy
>
> When type checked but not statically compiled, this case of method closure or whatever is failing for Groovy 4 but works for Groovy 3 and earlier.  The line {{set.map(x -> x.first().intValue())}} is the source.  GROOVY-9803 was the original issue; when broken up into separate source units, the class loader issue appears.
> New test case for {{groovy.transform.stc.GenericsSTCTest}}:
> {code:groovy}
>     // GROOVY-9803, GROOVY-9873
>     void testShouldUseMethodGenericType9() {
>         // same as above but with separate source units
>         config.with {
>             targetDirectory = File.createTempDir()
>             jointCompilationOptions = [memStub: true]
>         }
>         File parentDir = File.createTempDir()
>         try {
>             def c = new File(parentDir, 'C.groovy')
>             c.write '''
>                 class C<T> {
>                     private T t
>                     C(T item) {
>                         t = item
>                     }
>                     static <U> C<U> of(U item) {
>                         new C<U>(item)
>                     }
>                     def <V> C<V> map(F<? super T, ? super V> func) {
>                         new C<V>(func.apply(t))
>                     }
>                 }
>             '''
>             def d = new File(parentDir, 'D.groovy')
>             d.write '''
>                 class D {
>                     static <W> Set<W> wrap(W o) {
>                         Collections.singleton(o)
>                     }
>                 }
>             '''
>             def f = new File(parentDir, 'F.groovy')
>             f.write '''
>                 interface F<X,Y> {
>                     Y apply(X x)
>                 }
>             '''
>             def g = new File(parentDir, 'G.groovy')
>             g.write '''
>                 void test() {
>                     def c = C.of(123)
>                     def set = c.map(D.&wrap)
>                     def num = set.map(x -> x.first().intValue())
>                 }
>                 test()
>             '''
>             def loader = new GroovyClassLoader(this.class.classLoader)
>             def cu = new JavaAwareCompilationUnit(config, loader)
>             cu.addSources(c, d, f, g)
>             cu.compile()
>             loader.loadClass('G').main()
>         } finally {
>             parentDir.deleteDir()
>             config.targetDirectory.deleteDir()
>         }
>     }
> {code}
> {code}
>     java.lang.IllegalArgumentException: F referenced from a method is not visible from class loader
>         at java.base/java.lang.reflect.Proxy$ProxyBuilder.ensureVisible(Proxy.java:858)
>         at java.base/java.lang.reflect.Proxy$ProxyBuilder.validateProxyInterfaces(Proxy.java:681)
>         at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:627)
>         at java.base/java.lang.reflect.Proxy$ProxyBuilder.<init>(Proxy.java:635)
>         at java.base/java.lang.reflect.Proxy.lambda$getProxyConstructor$0(Proxy.java:415)
>         at java.base/jdk.internal.loader.AbstractClassLoaderValue$Memoizer.get(AbstractClassLoaderValue.java:329)
>         at java.base/jdk.internal.loader.AbstractClassLoaderValue.computeIfAbsent(AbstractClassLoaderValue.java:205)
>         at java.base/java.lang.reflect.Proxy.getProxyConstructor(Proxy.java:413)
>         at java.base/java.lang.reflect.Proxy.newProxyInstance(Proxy.java:1006)
>         at org.codehaus.groovy.vmplugin.v8.IndyInterface.fromCache(IndyInterface.java:318)
>         at G.test(G.groovy:4)
>         at org.codehaus.groovy.vmplugin.v8.IndyInterface.fromCache(IndyInterface.java:318)
>         at G.run(G.groovy:7)
>         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>         at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.base/java.lang.reflect.Method.invoke(Method.java:566)
>         at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:112)
>         at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1270)
>         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1036)
>         at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:1031)
>         at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:1014)
>         at org.codehaus.groovy.runtime.InvokerHelper.runScript(InvokerHelper.java:444)
>         at org.codehaus.groovy.vmplugin.v8.IndyInterface.fromCache(IndyInterface.java:318)
>         at G.main(G.groovy)
> {code}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)