> On 2021. Jun 28., at 19:30, Remi Forax <fo...@univ-mlv.fr> wrote: > > > In the meantime, I think you can use Lookup.defineClass() or do you rely on > the weird security model of the anonymous classes ?
Thankfully, no. Nashorn regenerates code for the same function sometimes so it was convenient having old versions get garbage collectible when they were individual anonymous classes; not being registered with class loader didn’t make their reachability dependent on one another. I could simulate it with one class loader per generated class; but it’ll cause a bit of a proliferation of class loader objects. Anon classes were just convenient in this regard. IIUC Lookup.defineClass() doesn’t help me with that. Does it have some benefits over defining a class through a class loader? Attila. > >> >> Hope this helps, >> Attila. > > Rémi > >> >> [0] >> https://mail.openjdk.java.net/pipermail/core-libs-dev/2021-May/077347.html >> >> >>> On 2021. Jun 28., at 18:24, Greg Watts <gwa...@us.ibm.com> wrote: >>> >>> >>> Dear Nashorn development team, >>> >>> I am trying to run an ANT build of our product using >>> nashorn-core:15.1.1.jar with Java 17 (pre-release - build 27) and I get: >>> >>> BUILD FAILED >>> java.lang.ExceptionInInitializerError >>> at >>> org.openjdk.nashorn.internal.runtime.Context.compile(Context.java:1509) >>> at >>> org.openjdk.nashorn.internal.runtime.Context.compileScript(Context.java:1449) >>> at >>> org.openjdk.nashorn.internal.runtime.Context.compileScript(Context.java:759) >>> at >>> org.openjdk.nashorn.api.scripting.NashornScriptEngine.compileImpl(NashornScriptEngine.java:528) >>> at >>> org.openjdk.nashorn.api.scripting.NashornScriptEngine.compileImpl(NashornScriptEngine.java:517) >>> at >>> org.openjdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:395) >>> at >>> org.openjdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:151) >>> at >>> java.scripting/javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:262) >>> 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.apache.tools.ant.util.ReflectUtil.invoke(ReflectUtil.java:108) >>> at >>> org.apache.tools.ant.util.ReflectWrapper.invoke(ReflectWrapper.java:81) >>> at >>> org.apache.tools.ant.util.optional.JavaxScriptRunner.evaluateScript(JavaxScriptRunner.java:103) >>> at >>> org.apache.tools.ant.util.optional.JavaxScriptRunner.executeScript(JavaxScriptRunner.java:67) >>> at >>> org.apache.tools.ant.taskdefs.optional.Script.execute(Script.java:52) >>> at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) >>> at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) >>> at >>> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>> at java.base/java.lang.reflect.Method.invoke(Method.java:568) >>> at >>> org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) >>> at org.apache.tools.ant.Task.perform(Task.java:348) >>> at org.apache.tools.ant.Target.execute(Target.java:392) >>> at org.apache.tools.ant.Target.performTasks(Target.java:413) >>> at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) >>> at org.apache.tools.ant.Project.executeTarget(Project.java:1368) >>> at >>> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) >>> at org.apache.tools.ant.Project.executeTargets(Project.java:1251) >>> at org.apache.tools.ant.Main.runBuild(Main.java:811) >>> at org.apache.tools.ant.Main.startAnt(Main.java:217) >>> at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280) >>> at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109) >>> Caused by: java.lang.RuntimeException: java.lang.NoSuchMethodException: no >>> such method: >>> sun.misc.Unsafe.defineAnonymousClass(Class,byte[],Object[])Class/invokeVirtual >>> at org.openjdk.nashorn.internal.runtime.Context >>> $AnonymousContextCodeInstaller.lambda$getDefineAnonymousClass >>> $0(Context.java:335) >>> at >>> java.base/java.security.AccessController.doPrivileged(AccessController.java:318) >>> at org.openjdk.nashorn.internal.runtime.Context >>> $AnonymousContextCodeInstaller.getDefineAnonymousClass(Context.java:327) >>> at org.openjdk.nashorn.internal.runtime.Context >>> $AnonymousContextCodeInstaller.<clinit>(Context.java:317) >>> ... 33 more >>> Caused by: java.lang.NoSuchMethodException: no such method: >>> sun.misc.Unsafe.defineAnonymousClass(Class,byte[],Object[])Class/invokeVirtual >>> at >>> java.base/java.lang.invoke.MemberName.makeAccessException(MemberName.java:976) >>> at java.base/java.lang.invoke.MemberName >>> $Factory.resolveOrFail(MemberName.java:1117) >>> at java.base/java.lang.invoke.MethodHandles >>> $Lookup.resolveOrFail(MethodHandles.java:3643) >>> at java.base/java.lang.invoke.MethodHandles >>> $Lookup.findVirtual(MethodHandles.java:2680) >>> at org.openjdk.nashorn.internal.runtime.Context >>> $AnonymousContextCodeInstaller.lambda$getDefineAnonymousClass >>> $0(Context.java:329) >>> ... 36 more >>> Caused by: java.lang.NoSuchMethodError: 'java.lang.Class >>> sun.misc.Unsafe.defineAnonymousClass(java.lang.Class, byte[], >>> java.lang.Object[])' >>> at java.base/java.lang.invoke.MethodHandleNatives.resolve(Native >>> Method) >>> at java.base/java.lang.invoke.MemberName >>> $Factory.resolve(MemberName.java:1085) >>> at java.base/java.lang.invoke.MemberName >>> $Factory.resolveOrFail(MemberName.java:1114) >>> ... 39 more >>> >>> >>> So I was curious to know please if Nashorn will be supported in Java 17, >>> and if so, when you might anticipate that to be released (ballpark >>> estimate)? >>> >>> >>> Greg Watts >>> WebSphere Zombie Apocalypse Team >>> External: 507-253-8901 >>> email: gwa...@us.ibm.com >>> >>> "Take risks: if you win, you will be happy; if you lose, you will be wise" >>> - Unknown
