Fixed bug 391016: null returned even though SharedASTProvider
diff --git a/org.eclipse.jdt.ui/core extension/org/eclipse/jdt/internal/corext/codemanipulation/AddImportsOperation.java b/org.eclipse.jdt.ui/core extension/org/eclipse/jdt/internal/corext/codemanipulation/AddImportsOperation.java
index 33b0512..53e2b09 100644
--- a/org.eclipse.jdt.ui/core extension/org/eclipse/jdt/internal/corext/codemanipulation/AddImportsOperation.java
+++ b/org.eclipse.jdt.ui/core extension/org/eclipse/jdt/internal/corext/codemanipulation/AddImportsOperation.java
@@ -1,5 +1,5 @@
/*******************************************************************************
- * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * Copyright (c) 2000, 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
@@ -163,6 +163,8 @@
monitor.beginTask(CodeGenerationMessages.AddImportsOperation_description, 4);
CompilationUnit astRoot= SharedASTProvider.getAST(fCompilationUnit, SharedASTProvider.WAIT_YES, new SubProgressMonitor(monitor, 1));
+ if (astRoot == null)
+ throw new OperationCanceledException();
ImportRewrite importRewrite= StubUtility.createImportRewrite(astRoot, true);
