--- /dev/null	2017-05-22 14:22:38.000000000 -0700
+++ new/test/javax/imageio/AllowSearch.java	2017-05-22 14:22:38.000000000 -0700
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 4420318
+ * @summary Checks that an IllegalStateException is thrown by getNumImages(true)
+ *          when seekForwardOnly is true
+ * @modules java.desktop/com.sun.imageio.plugins.gif
+ *          java.desktop/com.sun.imageio.plugins.jpeg
+ *          java.desktop/com.sun.imageio.plugins.png
+ */
+
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.stream.ImageInputStream;
+
+import com.sun.imageio.plugins.gif.GIFImageReader;
+import com.sun.imageio.plugins.jpeg.JPEGImageReader;
+import com.sun.imageio.plugins.png.PNGImageReader;
+
+public class AllowSearch {
+
+    private static void test(ImageReader reader, String format)
+        throws IOException {
+        File f = File.createTempFile("imageio", ".tmp");
+        ImageInputStream stream = ImageIO.createImageInputStream(f);
+        reader.setInput(stream, true);
+
+        boolean gotISE = false;
+        try {
+            int numImages = reader.getNumImages(true);
+        } catch (IOException ioe) {
+            gotISE = false;
+        } catch (IllegalStateException ise) {
+            gotISE = true;
+        }
+
+        if (!gotISE) {
+            throw new RuntimeException("Failed to get desired exception for " +
+                                       format + " reader!");
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+        ImageReader gifReader = new GIFImageReader(null);
+        ImageReader jpegReader = new JPEGImageReader(null);
+        ImageReader pngReader = new PNGImageReader(null);
+
+        test(gifReader, "GIF");
+        test(jpegReader, "JPEG");
+        test(pngReader, "PNG");
+    }
+}