diff --git a/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/Iterables.java b/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/Iterables.java
index 03e7014cfaa8..8236b2587c51 100644
--- a/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/Iterables.java
+++ b/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/Iterables.java
@@ -295,7 +295,7 @@ public static <T> T getOnlyElement(Iterable<? extends T> iterable, @Nullable T d
   }
 
   static <T> T[] toArray(Iterable<? extends T> iterable, T[] array) {
-    Collection<? extends T> collection = toCollection(iterable);
+    Collection<? extends T> collection = castOrCopyToCollection(iterable);
     return collection.toArray(array);
   }
 
@@ -307,7 +307,7 @@ static <T> T[] toArray(Iterable<? extends T> iterable, T[] array) {
    *     have been copied
    */
   static Object[] toArray(Iterable<?> iterable) {
-    return toCollection(iterable).toArray();
+    return castOrCopyToCollection(iterable).toArray();
   }
 
   /**
@@ -315,7 +315,7 @@ static Object[] toArray(Iterable<?> iterable) {
    * collection, it is returned. Otherwise, an {@link java.util.ArrayList} is
    * created with the contents of the iterable in the same iteration order.
    */
-  private static <E> Collection<E> toCollection(Iterable<E> iterable) {
+  private static <E> Collection<E> castOrCopyToCollection(Iterable<E> iterable) {
     return (iterable instanceof Collection)
         ? (Collection<E>) iterable
         : Lists.newArrayList(iterable.iterator());
diff --git a/guava/src/com/google/common/collect/Iterables.java b/guava/src/com/google/common/collect/Iterables.java
index 18fd2aeed178..fca89e372d92 100644
--- a/guava/src/com/google/common/collect/Iterables.java
+++ b/guava/src/com/google/common/collect/Iterables.java
@@ -306,13 +306,11 @@ public static <T> T getOnlyElement(Iterable<? extends T> iterable, @Nullable T d
    */
   @GwtIncompatible("Array.newInstance(Class, int)")
   public static <T> T[] toArray(Iterable<? extends T> iterable, Class<T> type) {
-    Collection<? extends T> collection = toCollection(iterable);
-    T[] array = ObjectArrays.newArray(type, collection.size());
-    return collection.toArray(array);
+    return toArray(iterable, ObjectArrays.newArray(type, 0));
   }
 
   static <T> T[] toArray(Iterable<? extends T> iterable, T[] array) {
-    Collection<? extends T> collection = toCollection(iterable);
+    Collection<? extends T> collection = castOrCopyToCollection(iterable);
     return collection.toArray(array);
   }
 
@@ -324,7 +322,7 @@ static <T> T[] toArray(Iterable<? extends T> iterable, T[] array) {
    *     have been copied
    */
   static Object[] toArray(Iterable<?> iterable) {
-    return toCollection(iterable).toArray();
+    return castOrCopyToCollection(iterable).toArray();
   }
 
   /**
@@ -332,7 +330,7 @@ static Object[] toArray(Iterable<?> iterable) {
    * collection, it is returned. Otherwise, an {@link java.util.ArrayList} is
    * created with the contents of the iterable in the same iteration order.
    */
-  private static <E> Collection<E> toCollection(Iterable<E> iterable) {
+  private static <E> Collection<E> castOrCopyToCollection(Iterable<E> iterable) {
     return (iterable instanceof Collection)
         ? (Collection<E>) iterable
         : Lists.newArrayList(iterable.iterator());