Bug 63268 error while activating view
I'm not sure what caused this behaviour. I created a workspace this morning, imported a few projects, and ran the UI Test Suite. However, I got an error when trying to activate the Hierarchy view (by clicking on it). The error looks like an infinite loop. The trace is over 800 lines long, so I'll attach it in a minute.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
}
	}
	
	private boolean isShowQualifiedTypeNames() {
		return fShowQualifiedTypeNamesAction.isChecked();
	}
	
	/**
	 * Called from ITypeHierarchyLifeCycleListener.
	 * Can be called from any thread
	 */
	protected void doTypeHierarchyChanged(final TypeHierarchyLifeCycle typeHierarchy, final IType[] changedTypes) {
		if (!fIsVisible) {
			fNeedRefresh= true;
			return;
		}
		if (fIsRefreshRunnablePosted) {
			return;
		}
		
		Display display= getDisplay();
		if (display != null) {
			fIsRefreshRunnablePosted= true;
			display.asyncExec(new Runnable() {
				public void run() {
					try {
						if (fPagebook != null && !fPagebook.isDisposed()) {
							doTypeHierarchyChangedOnViewers(changedTypes);
						}
					} finally {