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Backport to 4.3.2 +++ This bug was initially created as a clone of Bug #416773 +++ In an attempt to port an RCP application written for Eclipse 3.8 to 4.3 using the legacy compatibility mode, I was initially using the Eclipse 4.2 target platform to also temporarily circumvent bug #416746, when I changed the target platform to Eclipse 4.3 I found that it is not backward compatible, not only it throws exceptions but also freezes without displaying any UI or information to the user. This is unacceptable, future releases must be backward compatibile, I can't write an application then tell my users to wipe the workspace files because the platform update is not compatible. This is a showstopper for me! These are the exceptions thrown when launching the application using 4.3 target platform and workspace files created with 4.2 target platform. !SESSION 2013-09-07 09:04:22.274 ----------------------------------------------- eclipse.buildId=unknown java.version=1.6.0_38 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=it_IT Framework arguments: -product com.maccasoft.platform.workbench Command-line arguments: -product com.maccasoft.platform.workbench -data /home/marco/e4/../runtime-workspace -dev file:/home/marco/e4/.metadata/.plugins/org.eclipse.pde.core/Program/dev.properties -os linux -ws gtk -arch x86_64 -consoleLog !ENTRY org.eclipse.e4.ui.workbench.swt 4 2 2013-09-07 09:04:27.691 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.e4.ui.workbench.swt". !STACK 0 java.util.ConcurrentModificationException at org.eclipse.emf.common.util.AbstractEList$EIterator.checkModCount(AbstractEList.java:756) at org.eclipse.emf.common.util.AbstractEList$EIterator.doNext(AbstractEList.java:704) at org.eclipse.emf.common.util.AbstractEList$EIterator.next(AbstractEList.java:690) at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.processContents(WBWRenderer.java:696) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:645) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:735) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$2(PartRenderingEngine.java:706) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:700) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:685) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1042) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at com.maccasoft.ui.internal.application.Application.start(Application.java:55) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591) at org.eclipse.equinox.launcher.Main.run(Main.java:1450) at org.eclipse.equinox.launcher.Main.main(Main.java:1426) !ENTRY org.eclipse.e4.ui.workbench 4 0 2013-09-07 09:04:27.696 !MESSAGE Exception occurred while rendering: org.eclipse.e4.ui.model.application.ui.basic.impl.TrimmedWindowImpl@3f508f31 (elementId: IDEWindow, tags: [topLevel], contributorURI: platform:/plugin/com.maccasoft.platform) (widget: Shell {MaccaSoft - Default}, renderer: org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer@1167acf2, toBeRendered: true, onTop: false, visible: true, containerData: null, accessibilityPhrase: null) (label: null, iconURI: null, tooltip: null, context: TrimmedWindowImpl (IDEWindow) Context, variables: [], x: 0, y: 0, width: 1028, height: 766) !STACK 0 java.util.ConcurrentModificationException at org.eclipse.emf.common.util.AbstractEList$EIterator.checkModCount(AbstractEList.java:756) at org.eclipse.emf.common.util.AbstractEList$EIterator.doNext(AbstractEList.java:704) at org.eclipse.emf.common.util.AbstractEList$EIterator.next(AbstractEList.java:690) at org.eclipse.e4.ui.workbench.renderers.swt.WBWRenderer.processContents(WBWRenderer.java:696) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:645) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:735) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$2(PartRenderingEngine.java:706) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:700) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:685) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1042) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at com.maccasoft.ui.internal.application.Application.start(Application.java:55) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591) at org.eclipse.equinox.launcher.Main.run(Main.java:1450) at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
Review URL: https://git.eclipse.org/r/#/c/16463/
Released as http://git.eclipse.org/c/platform/eclipse.platform.ui.git/commit/?h=R4_3_maintenance&id=1dbef3947205de86431b201934a3c7cf70f36c5a Thanks Wojtek. PW
Verified in M20131127-1300.
