commit 02c6c8cd6e8c93b63c75b25de6bf76bb45755bb4
author Behdad Esfahbod <behdad@behdad.org> Fri Nov 15 13:05:38 2013 -0500
committer Behdad Esfahbod <behdad@behdad.org> Fri Nov 15 13:07:03 2013 -0500
tree 060989d45d452e426b2309eb3b83d91b15e6922c
parent 6300694f6e531593e7e932000f9540b0367940b8

Set buffer content type to INVALID in hb_buffer_set_length(0)

Previously we were only setting this in hb_buffer_clear_contents(),
but set_length(0) is a valid way to reinitialize buffer to use with
new text.

src/hb-buffer-private.hh

diff --git a/src/hb-buffer-private.hh b/src/hb-buffer-private.hh
index d3ed449..49773f1 100644
--- a/src/hb-buffer-private.hh
+++ b/src/hb-buffer-private.hh
@@ -181,7 +181,7 @@
   HB_INTERNAL bool enlarge (unsigned int size);
 
   inline bool ensure (unsigned int size)
-  { return likely (size < allocated) ? true : enlarge (size); }
+  { return likely (!size || size < allocated) ? true : enlarge (size); }
 
   HB_INTERNAL bool make_room_for (unsigned int num_in, unsigned int num_out);
   HB_INTERNAL bool shift_forward (unsigned int count);