Bugzilla – Full Text Bug Listing
| Summary: | [compiler] Unhandled event loop exception in AST while hovering over method (ClassCastException) | ||
|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Juergen Baier <baier> |
| Component: | Core | Assignee: | Jay Arthanareeswaran <jarthana> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | P3 | CC: | jarthana, misc, xhamcio |
| Version: | 4.23 | ||
| Target Milestone: | 4.24 M3 | ||
| Hardware: | PC | ||
| OS: | Mac OS X | ||
| See Also: | https://git.eclipse.org/r/c/jdt/eclipse.jdt.core/+/192503 | ||
| Whiteboard: | |||
This problem still persists in 4.23. Note that this problem occurs not only in rare and weird Java code. In fact there a multiple classes in our code base which trigger that ClassCastException. *** Bug 579552 has been marked as a duplicate of this bug. *** The error in this bug is different from the one from here. (In reply to h m from comment #3) > The error in this bug is different from the one from here. Well, what matters is the stack trace. What we have here and bug 579552 is very similar: at org.eclipse.jdt.internal.compiler.parser.Parser.consumeEnhancedForStatement(Parser.java:3445) at org.eclipse.jdt.internal.compiler.parser.Parser.consumeRule(Parser.java:8455) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:13038) at org.eclipse.jdt.internal.codeassist.impl.AssistParser.parseBlockStatements(AssistParser.java:2056) vs at org.eclipse.jdt.internal.compiler.parser.Parser.consumeEnhancedForStatement(Parser.java:3445) at org.eclipse.jdt.internal.compiler.parser.Parser.consumeRule(Parser.java:8455) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:13038) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:13293) New Gerrit change created: https://git.eclipse.org/r/c/jdt/eclipse.jdt.core/+/192503 After updating I have the same error. This have been pushed via https://github.com/eclipse-jdt/eclipse.jdt.core/commit/22b4e4754d4f916394181cb7f1e6aa1c26d7af60 *** Bug 577508 has been marked as a duplicate of this bug. *** I see only ooph update in my Eclipse. (In reply to h m from comment #9) > I see only ooph update in my Eclipse. You can download the latest build from here https://download.eclipse.org/eclipse/downloads/drops4/I20220419-1800/ or install the JDT update from here: https://download.eclipse.org/eclipse/updates/4.24-I-builds/I20220419-1800/ to try out the fix. I have the same error after updating. (In reply to h m from comment #11) > I have the same error after updating. That probably means what you reported in 579552 is not same as this bug report. Can you try the testcase given in comment #0 and let me know if that works for you? We need to confirm that your build has the fix. May I ask how did you update? Can you confirm that the plug-in version for jdt.core is indeed is the latest? Eclipse JDT Plug-in Developer Resources 3.18.1100.v20220308-0310 org.eclipse.jdt.source.feature.group Eclipse.org Eclipse.org Eclipse Compiler for Java(TM) 3.30.0.v20220419-1041 org.eclipse.jdt.core.compiler.batch I installed the update from here: https://download.eclipse.org/eclipse/updates/4.24-I-builds/I20220419-1800/ And I have the error with the code from comment #0. I also have this error when updating:
Cannot complete the install because of a conflicting dependency.
Software being installed: Eclipse Platform 4.24.0.v20220419-2208 (org.eclipse.platform.feature.group 4.24.0.v20220419-2208)
Software currently installed: Eclipse IDE for Java Developers 4.23.0.20220310-1200 (epp.package.java 4.23.0.20220310-1200)
Only one of the following can be installed at once:
Proxy for Windows 1.1.100.v20180515-0858 (org.eclipse.core.net.win32.x86_64 1.1.100.v20180515-0858)
Proxy for Windows 1.1.500.v20190925-1337 (org.eclipse.core.net.win32.x86_64 1.1.500.v20190925-1337)
Proxy for Windows 1.1.600.v20220312-1450 (org.eclipse.core.net.win32.x86_64 1.1.600.v20220312-1450)
Cannot satisfy dependency:
From: Eclipse IDE for Java Developers 4.23.0.20220310-1200 (epp.package.java 4.23.0.20220310-1200)
To: org.eclipse.equinox.p2.iu; org.eclipse.platform.feature.group [4.23.0.v20220308-0722,4.23.0.v20220308-0722]
Cannot satisfy dependency:
From: Eclipse Platform 4.23.0.v20220308-0722 (org.eclipse.platform.feature.group 4.23.0.v20220308-0722)
To: org.eclipse.equinox.p2.iu; org.eclipse.core.net.win32.x86_64 [1.1.500.v20190925-1337,1.1.500.v20190925-1337]
Cannot satisfy dependency:
From: Eclipse Platform 4.24.0.v20220419-2208 (org.eclipse.platform.feature.group 4.24.0.v20220419-2208)
To: org.eclipse.equinox.p2.iu; org.eclipse.core.net.win32.x86_64 [1.1.600.v20220312-1450,1.1.600.v20220312-1450]
(In reply to h m from comment #13) > Eclipse JDT Plug-in Developer Resources 3.18.1100.v20220308-0310 > org.eclipse.jdt.source.feature.group Eclipse.org > Eclipse.org Eclipse Compiler for Java(TM) 3.30.0.v20220419-1041 > org.eclipse.jdt.core.compiler.batch > > I installed the update from here: > https://download.eclipse.org/eclipse/updates/4.24-I-builds/I20220419-1800/ > > And I have the error with the code from comment #0. That doesn't look good. It probably means you still don't have the fix in your setup. What's your current eclipse version? For verification sake, can you take the whole build mentioned in comment #10 and try again? Ok, but how do I update? Updating from the link and software plugins didn't help. |
With the code below I get an "unhandled event loop exception" while hovering over getKey(). The error log shows: java.lang.ClassCastException: class org.eclipse.jdt.internal.compiler.ast.LocalDeclaration cannot be cast to class org.eclipse.jdt.internal.compiler.ast.ForeachStatement (org.eclipse.jdt.internal.compiler.ast.LocalDeclaration and org.eclipse.jdt.internal.compiler.ast.ForeachStatement are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @71b75f99) at org.eclipse.jdt.internal.compiler.parser.Parser.consumeEnhancedForStatement(Parser.java:3445) at org.eclipse.jdt.internal.compiler.parser.Parser.consumeRule(Parser.java:8455) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:13038) at org.eclipse.jdt.internal.codeassist.impl.AssistParser.parseBlockStatements(AssistParser.java:2056) at org.eclipse.jdt.internal.codeassist.impl.AssistParser.parseBlockStatements(AssistParser.java:1896) at org.eclipse.jdt.internal.codeassist.impl.Engine.parseBlockStatements(Engine.java:349) at org.eclipse.jdt.internal.codeassist.impl.Engine.parseBlockStatements(Engine.java:312) at org.eclipse.jdt.internal.codeassist.SelectionEngine.select(SelectionEngine.java:1080) at org.eclipse.jdt.internal.core.Openable.codeSelect(Openable.java:167) at org.eclipse.jdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:389) at org.eclipse.jdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:382) at org.eclipse.jdt.internal.ui.javaeditor.JavaElementHyperlinkDetector.detectHyperlinks(JavaElementHyperlinkDetector.java:124) at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:81) at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:289) at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:262) at org.eclipse.jface.text.hyperlink.HyperlinkManager.mouseMove(HyperlinkManager.java:457) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:216) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4565) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1522) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1545) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1530) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4351) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3927) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1154) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1045) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) 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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596) at org.eclipse.equinox.launcher.Main.run(Main.java:1467) This happens with the Java code package eclipse; import java.util.Map.Entry; import java.util.Set; public class StringToSetNavigate { public static void main(String[] args) { Set<Foo> foos = Set.of(new Foo(), new Bar()); for (Foo foo : foos) { String string; if (foo instanceof Bar bar) { string = "__"; } } for (Entry<Foo, Set<Integer>> entry : map.entrySet()) { Foo key = entry.getKey(); // <======== Hover over "getKey()" } } static class Foo { } static class Bar extends Foo { } } Note: If I change if (foo instanceof Bar bar) { string = "__"; } to if (foo instanceof Bar) { string = "__"; } then the error no longer occurs.