From 4876461e511b91405a5838e577d2272416dfb18a Mon Sep 17 00:00:00 2001
From: Emanuel Graf <egraf@hsr.ch>
Date: Tue, 24 Nov 2009 07:16:01 +0000
Subject: [PATCH] Fix for NPE

---
 .../cdt/internal/core/dom/rewrite/astwriter/ASTWriter.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/ASTWriter.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/ASTWriter.java
index 22b013232f2..4acc51561c0 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/ASTWriter.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/astwriter/ASTWriter.java
@@ -78,7 +78,9 @@ public class ASTWriter {
 	 */
 	public String write(IASTNode rootNode, String fileScope, NodeCommentMap commentMap) throws ProblemRuntimeException {
 		transformationVisitor = new ChangeGeneratorWriterVisitor(modificationStore, givenIndentation, fileScope, commentMap);
-		rootNode.accept(transformationVisitor);
+		if(rootNode != null){
+			rootNode.accept(transformationVisitor);
+		}
 		String str = transformationVisitor.toString();
 		transformationVisitor.cleanCache();
 		return str;