src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGImageReader.java

@@ -1084,14 +1084,24 @@
         byte[] byteData = null;
         short[] shortData = null;
         byte[] curr = new byte[bytesPerRow];
         byte[] prior = new byte[bytesPerRow];
 
+        WritableRaster passRow = null;
+        try {
         // Create a 1-row tall Raster to hold the data
-        WritableRaster passRow = createRaster(passWidth, 1, inputBands,
-                                              eltsPerRow,
+            passRow = createRaster(passWidth, 1, inputBands, eltsPerRow,
                                               bitDepth);
+        } catch (Exception e) {
+            /*
+             * createRaster() can throw many types of Exception but according
+             * to specification we must throw only IIOException if we face any
+             * issue while reading an image. So at this high level we catch
+             * the exception and wrap it around IIOException.
+             */
+            throw new IIOException("Caught exception during read: ", e);
+        }
 
         // Create an array suitable for holding one pixel
         int[] ps = passRow.getPixel(0, 0, (int[])null);
 
         DataBuffer dataBuffer = passRow.getDataBuffer();