[HarfBuzz] harfbuzz-ng: Branch 'master'

[Behdad Esfahbod]

 src/hb-buffer.cc |    2 ++
 1 file changed, 2 insertions(+)

New commits:
commit c521e793bd6c1dafacb94253a45b9c70ab38525e
Author: Behdad Esfahbod <behdad at behdad.org>
Date:   Wed Jan 18 21:51:05 2012 -0500

    Fix OOB in replace_glyph()
    
    Patch from Kenichi Ishibashi.

diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
index 3e25b15..e8bdfb1 100644
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@@ -317,6 +317,8 @@ hb_buffer_t::copy_glyph (void)
 void
 hb_buffer_t::replace_glyph (hb_codepoint_t glyph_index)
 {
+  if (!make_room_for (1, 1)) return;
+
   out_info[out_len] = info[idx];
   out_info[out_len].codepoint = glyph_index;