Index: /trunk/Mars/mcore/FITS.h
===================================================================
--- /trunk/Mars/mcore/FITS.h	(revision 17748)
+++ /trunk/Mars/mcore/FITS.h	(revision 17749)
@@ -33,6 +33,8 @@
 
 #ifdef __CINT__
-    struct TileHeader;
-    struct BlockHeader;
+    // CINT doesn't like the packed attribute...
+    // Therefore we give another hint of the size of the structure
+    struct TileHeader  { char dummy[16]; };
+    struct BlockHeader { char dummy[10]; };
 #else
     //Structure helper for tiles headers
@@ -78,5 +80,4 @@
             : header(0, order, seq.size()), sequence(seq)
         {
-
         }