From 96226455142018927a96c676980a90206d60714e Mon Sep 17 00:00:00 2001
From: Grigori Goronzy <greg@hein>
Date: Thu, 20 Aug 2009 16:41:11 +0200
Subject: Clip vector blending: do not copy last row padding

Do not copy the padding on the last row into the new buffer since we
cannot rely on the padding actually existing; might fix a segfault in
some obscure cases.
---
 libass/ass_render.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libass/ass_render.c b/libass/ass_render.c
index 253d409..bcb3f95 100644
--- a/libass/ass_render.c
+++ b/libass/ass_render.c
@@ -592,7 +592,7 @@ static void blend_vector_clip(ASS_Renderer *render_priv,
             free_list_add(render_priv, nbuffer);
 
             // Blend together
-            memcpy(nbuffer, abuffer, as * ah);
+            memcpy(nbuffer, abuffer, as * (ah - 1) + aw);
             for (y = 0; y < h; y++)
                 for (x = 0; x < w; x++) {
                     apos = (atop + y) * as + aleft + x;
-- 
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