change signature AIOOBE

java/java-impl/src/com/intellij/refactoring/changeSignature/JavaChangeSignatureUsageProcessor.java

@@ -491,7 +491,7 @@ public class JavaChangeSignatureUsageProcessor implements ChangeSignatureUsagePr
                                                     final PsiExpression[] args) throws IncorrectOperationException {
     final PsiElementFactory factory = JavaPsiFacade.getInstance(list.getProject()).getElementFactory();
     final int index = info.getOldIndex();
-    if (index >= 0) {
+    if (index >= 0 && index < args.length) {
       return args[index];
     }
     else {

java/java-tests/testData/refactoring/changeSignature/VarargMethodToNonVarag.java

@@ -0,0 +1,8 @@
+class Test {
+
+  void f<caret>oo(int... i) {}
+
+  {
+    foo();
+  }
+}

java/java-tests/testData/refactoring/changeSignature/VarargMethodToNonVarag_after.java

@@ -0,0 +1,8 @@
+class Test {
+
+  void foo(int i, boolean b) {}
+
+  {
+    foo(, );
+  }
+}