[PATCH] dwrite: Do not segfault if typographic features tag table is empty.
Giovanni Mascellani
gmascellani at codeweavers.com
Wed Mar 3 05:04:03 CST 2021
Signed-off-by: Giovanni Mascellani <gmascellani at codeweavers.com>
---
dlls/dwrite/shape.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dlls/dwrite/shape.c b/dlls/dwrite/shape.c
index 6428bf6ceb0..d425c189a58 100644
--- a/dlls/dwrite/shape.c
+++ b/dlls/dwrite/shape.c
@@ -380,7 +380,7 @@ HRESULT shape_get_typographic_features(struct scriptshaping_context *context, co
if (t.tags[i] != t.tags[j])
t.tags[++j] = t.tags[i];
}
- t.count = j + 1;
+ t.count = t.count > 0 ? j + 1 : 0;
if (t.count <= max_tagcount)
memcpy(tags, t.tags, t.count * sizeof(*t.tags));
--
2.30.1
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