[HB] Check for GDEF/GSUB/GPOS versions
diff --git a/src/hb-ot-layout-open-private.h b/src/hb-ot-layout-open-private.h
index 08ff152..6975251 100644
--- a/src/hb-ot-layout-open-private.h
+++ b/src/hb-ot-layout-open-private.h
@@ -172,7 +172,16 @@
{ \
if (HB_UNLIKELY (data == NULL)) return Null(Type); \
return (const Type&)*data; \
- } \
+ }
+/* Like get_for_data(), but checks major version first. */
+#define STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION(Type, Major) \
+ static inline const Type& get_for_data (const char *data) \
+ { \
+ if (HB_UNLIKELY (data == NULL)) return Null(Type); \
+ const Type& t = (const Type&)*data; \
+ if (HB_UNLIKELY (t.version.major () != Major)) return Null(Type); \
+ return t; \
+ }
