From 5f5a9f256cad866172c18939e31162ba038ac02e Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Sun, 24 Jul 2022 23:05:03 +0300
Subject: HarfBuzz: Update to version 5.0.1

---
 thirdparty/harfbuzz/src/hb-null.hh | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

(limited to 'thirdparty/harfbuzz/src/hb-null.hh')

diff --git a/thirdparty/harfbuzz/src/hb-null.hh b/thirdparty/harfbuzz/src/hb-null.hh
index 78eb6474d5..0d7f4da79e 100644
--- a/thirdparty/harfbuzz/src/hb-null.hh
+++ b/thirdparty/harfbuzz/src/hb-null.hh
@@ -39,6 +39,24 @@
 
 #define HB_NULL_POOL_SIZE 448
 
+template <typename T, typename>
+struct _hb_has_min_size : hb_false_type {};
+template <typename T>
+struct _hb_has_min_size<T, hb_void_t<decltype (T::min_size)>>
+	: hb_true_type {};
+template <typename T>
+using hb_has_min_size = _hb_has_min_size<T, void>;
+#define hb_has_min_size(T) hb_has_min_size<T>::value
+
+template <typename T, typename>
+struct _hb_has_null_size : hb_false_type {};
+template <typename T>
+struct _hb_has_null_size<T, hb_void_t<decltype (T::null_size)>>
+	: hb_true_type {};
+template <typename T>
+using hb_has_null_size = _hb_has_null_size<T, void>;
+#define hb_has_null_size(T) hb_has_null_size<T>::value
+
 /* Use SFINAE to sniff whether T has min_size; in which case return the larger
  * of sizeof(T) and T::null_size, otherwise return sizeof(T).
  *
@@ -117,8 +135,19 @@ struct NullHelper
 	}; \
 	namespace Namespace { \
 	static_assert (true, "") /* Require semicolon after. */
+#define DECLARE_NULL_NAMESPACE_BYTES_TEMPLATE1(Namespace, Type, Size) \
+	} /* Close namespace. */ \
+	extern HB_INTERNAL const unsigned char _hb_Null_##Namespace##_##Type[Size]; \
+	template <typename Spec> \
+	struct Null<Namespace::Type<Spec>> { \
+	  static Namespace::Type<Spec> const & get_null () { \
+	    return *reinterpret_cast<const Namespace::Type<Spec> *> (_hb_Null_##Namespace##_##Type); \
+	  } \
+	}; \
+	namespace Namespace { \
+	static_assert (true, "") /* Require semicolon after. */
 #define DEFINE_NULL_NAMESPACE_BYTES(Namespace, Type) \
-	const unsigned char _hb_Null_##Namespace##_##Type[hb_null_size (Namespace::Type)]
+	const unsigned char _hb_Null_##Namespace##_##Type[sizeof (_hb_Null_##Namespace##_##Type)]
 
 /* Specializations for arbitrary-content Null objects expressed as struct initializer. */
 #define DECLARE_NULL_INSTANCE(Type) \
-- 
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