Index: /trunk/Ohana/src/libfits/extern/gzip.c
===================================================================
--- /trunk/Ohana/src/libfits/extern/gzip.c	(revision 23815)
+++ /trunk/Ohana/src/libfits/extern/gzip.c	(revision 23816)
@@ -145,4 +145,5 @@
         return err;
     }
+    assert (stream.total_out <= *destLen);
     *destLen = stream.total_out;