--- libpng-1.0.8/pngrutil.c.sux	Mon Oct 30 18:22:31 2000
+++ libpng-1.0.8/pngrutil.c	Mon Oct 30 18:24:16 2000
@@ -1041,8 +1041,13 @@
    chunkdata = png_decompress_chunk(png_ptr, compression_type, chunkdata,
                                     slength, prefix_length, &data_length);
 
-   png_set_iCCP(png_ptr, info_ptr, chunkdata, compression_type,
-                chunkdata + prefix_length, data_length);
+   if(chunkdata)
+      png_set_iCCP(png_ptr, info_ptr, chunkdata, compression_type,
+                   chunkdata + prefix_length, data_length);
+   else
+      png_set_iCCP(png_ptr, info_ptr, chunkdata, compression_type,
+                   0x00, prefix_length);
+
    png_free(png_ptr, chunkdata);
 }
 #endif /* PNG_READ_iCCP_SUPPORTED */