diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
index 67e41410bc7..c32706a779e 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/CodeFormatterVisitor.java
@@ -1032,9 +1032,11 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
 
 		// declarator
 		final ICPPASTFunctionDeclarator declarator = node.getDeclarator();
-		skipNonWhitespaceToNode(declarator);
+		if (declarator != null) {
+			skipNonWhitespaceToNode(declarator);
+		}
 		boolean hasSpace = scribe.printComment();
-		boolean hasPointerOps = declarator.getPointerOperators().length > 0;
+		boolean hasPointerOps = declarator != null ? declarator.getPointerOperators().length > 0 : false;
 		boolean needSpace = (hasPointerOps && hasSpace) || (!hasPointerOps && peekNextToken() == Token.tIDENTIFIER);
 		if (needSpace) {
 			scribe.space();
@@ -1047,11 +1049,13 @@ public class CodeFormatterVisitor extends ASTVisitor implements ICPPASTVisitor,
 					preferences.insert_space_before_opening_brace_in_method_declaration, false);
 			scribe.setTailFormatter(tailFormatter);
 		}
-		declarator.accept(this);
+		if (declarator != null) {
+			declarator.accept(this);
 
-		IASTAttributeSpecifier[] attributes = declarator.getAttributeSpecifiers();
-		if (attributes.length > 0) {
-			formatAttributes(declarator, true, false);
+			IASTAttributeSpecifier[] attributes = declarator.getAttributeSpecifiers();
+			if (attributes.length > 0) {
+				formatAttributes(declarator, true, false);
+			}
 		}
 
 		if (tailFormatter != null) {
diff --git a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
index a2a490f85f4..459aab7aa09 100644
--- a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
+++ b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
@@ -4825,4 +4825,19 @@ public class CodeFormatterTest extends BaseUITestCase {
 	public void testVariadicFunction_Bug487990() throws Exception {
 		assertFormatterResult();
 	}
+
+	//int main() {
+	//	const int a = []{return 12;}();
+	//	return 0;
+	//}
+
+	//int main() {
+	//	const int a = [] {
+	//		return 12;
+	//	}();
+	//	return 0;
+	//}
+	public void testLambdaWithoutParens_Bug564273() throws Exception {
+		assertFormatterResult();
+	}
 }