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TuononenP / llvm4eclipsecdt

LLVM toolchain support for Eclipse CDT. Now deprecated since it is build-in to Eclipse CDT via installation option. LLVM is a modular toolchain architecture that is used more and more in all kinds of computing platforms for it's certain benefits.
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Null pointer exception when changing toolchain. #50

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Start project as llvm-clang(mingw)
2. Change toolchain to mingw (gcc)
3. Change toolchain to llvm-clang(migw)

What is the expected output? What do you see instead?

I am able to change toolchain again. Null pointer exception appears

What version of the product are you using? On what operating system?
Version: Indigo Service Release 2
Build id: 20120216-1857
Windows7

Please provide any additional information below.

!SESSION 2012-06-19 11:08:39.959 -----------------------------------------------
eclipse.buildId=M20120208-0800
java.version=1.7.0_04
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.cpp.product
Command-line arguments:  -os win32 -ws win32 -arch x86 -product 
org.eclipse.epp.package.cpp.product

!ENTRY org.eclipse.jface 4 2 2012-06-19 11:08:52.342
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NullPointerException
    at org.eclipse.cdt.managedbuilder.internal.tcmodification.ConfigurationModification.getBuilderCompatibilityStatus(ConfigurationModification.java:103)
    at org.eclipse.cdt.managedbuilder.ui.properties.ToolChainEditTab.showErrorMessage(ToolChainEditTab.java:233)
    at org.eclipse.cdt.managedbuilder.ui.properties.ToolChainEditTab.updateData(ToolChainEditTab.java:201)
    at org.eclipse.cdt.managedbuilder.ui.properties.ToolChainEditTab.updateData(ToolChainEditTab.java:197)
    at org.eclipse.cdt.ui.newui.AbstractCPropertyTab.setVisible(AbstractCPropertyTab.java:243)
    at org.eclipse.cdt.ui.newui.AbstractCPropertyTab.handleTabEvent(AbstractCPropertyTab.java:551)
    at org.eclipse.cdt.ui.newui.AbstractPage.setVisible(AbstractPage.java:810)
    at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1323)
    at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:674)
    at org.eclipse.jface.preference.PreferenceDialog$10.run(PreferenceDialog.java:708)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.jface.preference.PreferenceDialog$9.selectionChanged(PreferenceDialog.java:704)
    at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:888)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
    at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:886)
    at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1226)
    at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1251)
    at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:262)
    at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:256)
    at org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:433)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
    at org.eclipse.jface.window.Window.open(Window.java:801)
    at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:158)
    at org.eclipse.ui.internal.ide.actions.ProjectPropertyDialogAction.run(ProjectPropertyDialogAction.java:77)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    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:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

Original issue reported on code.google.com by kmalew...@gmail.com on 19 Jun 2012 at 11:11

GoogleCodeExporter commented 9 years ago 
I have the same problem. You don't need to start with a clang project. You can 
replicate it with two steps. 1. create mingw project 2. switch to llvm-clang

This issue also persist with the OSX llvm-clang. (I tried to convert a windows 
mingw project to osx clang)

Original comment by cyti...@gmail.com on 19 Feb 2013 at 9:11

GoogleCodeExporter commented 9 years ago 
To get around this issue, I removed .cproject, then used New and converted back 
to a C project and then I could set the toolchain to new one.

Original comment by behdad.f...@gmail.com on 19 May 2014 at 7:00