core: protect access to _items in empty strings

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/core/bytes.nit b/lib/core/bytes.nit
index 882a6e9..41b6aa8 100644 (file)
--- a/lib/core/bytes.nit
+++ b/lib/core/bytes.nit
@@ -931,7 +931,7 @@ end
 redef class FlatText
        redef fun append_to_bytes(b) do
                var from = if self isa FlatString then first_byte else 0
-               b.append_ns_from(items, byte_length, from)
+               if isset _items then b.append_ns_from(items, byte_length, from)
        end
 end
 

diff --git a/lib/core/text/flat.nit b/lib/core/text/flat.nit
index 06cdcfe..b728e42 100644 (file)
--- a/lib/core/text/flat.nit
+++ b/lib/core/text/flat.nit
@@ -1205,7 +1205,7 @@ private class FlatBufferByteIterator
 
        var curr_pos: Int
 
-       init do target_items = target._items
+       init do if isset target._items then target_items = target._items
 
        redef fun index do return curr_pos