--- jpeg2000_vsil_io.cpp.old	2017-07-28 01:08:51.945036712 +0200
+++ jpeg2000_vsil_io.cpp	2017-07-28 00:55:03.743658821 +0200
@@ -206,7 +206,7 @@
 			/* The buffer must be large enough to accommodate maximum
 			  putback. */
 			assert(bufsize > JAS_STREAM_MAXPUTBACK);
-			stream->bufbase_ = JAS_CAST(uchar *, buf);
+			stream->bufbase_ = JAS_CAST(u_char *, buf);
 			stream->bufsize_ = bufsize - JAS_STREAM_MAXPUTBACK;
 		}
 	} else {