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From c59b380364076c90aac01bc1a996e954cda5d6ab Mon Sep 17 00:00:00 2001
From: Andreas Scherer <andreas_github@freenet.de>
Date: Sun, 17 Jul 2022 19:46:50 +0200
Subject: [PATCH] Fix harfbuzz 4.4.1 for older g++.

---
 libs/harfbuzz/harfbuzz-src/src/hb-cplusplus.hh | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/libs/harfbuzz/harfbuzz-src/src/hb-cplusplus.hh b/libs/harfbuzz/harfbuzz-src/src/hb-cplusplus.hh
index 86d045208..c79d15506 100644
--- a/libs/harfbuzz/harfbuzz-src/src/hb-cplusplus.hh
+++ b/libs/harfbuzz/harfbuzz-src/src/hb-cplusplus.hh
@@ -166,26 +166,29 @@ HB_DEFINE_VTABLE (unicode_funcs);
 
 } // namespace hb
 
+namespace std {
+
 template<typename T>
-struct std::hash<hb::shared_ptr<T>>
+struct hash<hb::shared_ptr<T>>
 {
-    std::size_t operator()(const hb::shared_ptr<T>& v) const noexcept
+    size_t operator()(const hb::shared_ptr<T>& v) const noexcept
     {
-        std::size_t h = std::hash<decltype (v.get ())>{}(v.get ());
+        size_t h = hash<decltype (v.get ())>{}(v.get ());
         return h;
     }
 };
 
 template<typename T>
-struct std::hash<hb::unique_ptr<T>>
+struct hash<hb::unique_ptr<T>>
 {
-    std::size_t operator()(const hb::unique_ptr<T>& v) const noexcept
+    size_t operator()(const hb::unique_ptr<T>& v) const noexcept
     {
-        std::size_t h = std::hash<decltype (v.get ())>{}(v.get ());
+        size_t h = hash<decltype (v.get ())>{}(v.get ());
         return h;
     }
 };
 
+} // namespace std
 
 #endif /* __cplusplus */
 
-- 
2.37.1