From 28a0e364bb681d013cd57d68d8ca0f72017fa3c3 Mon Sep 17 00:00:00 2001
From: etkmao <etkmao@tencent.com>
Date: Wed, 7 Jun 2023 18:13:23 +0800
Subject: [PATCH] fix(core): fix std hash for xcode15

---
 modules/footstone/include/footstone/string_view.h | 9 +++++++++
 modules/footstone/src/string_view.cc              | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/modules/footstone/include/footstone/string_view.h b/modules/footstone/include/footstone/string_view.h
index 27133babedf..2aaa58ef67f 100644
--- a/modules/footstone/include/footstone/string_view.h
+++ b/modules/footstone/include/footstone/string_view.h
@@ -157,6 +157,15 @@ class string_view final {
 }  // namespace stringview
 }  // namespace footstone
 
+#ifdef __APPLE__
+#if defined(__clang__) && __clang_major__ >= 15
+template<>
+struct std::hash<footstone::stringview::string_view::u8string> {
+  std::size_t operator()(const footstone::stringview::string_view::u8string& value) const noexcept;
+};
+#endif
+#endif
+
 template<>
 struct std::hash<footstone::stringview::string_view> {
   std::size_t operator()(const footstone::stringview::string_view& value) const noexcept;
diff --git a/modules/footstone/src/string_view.cc b/modules/footstone/src/string_view.cc
index 3cbf23b1b76..757c359f6df 100644
--- a/modules/footstone/src/string_view.cc
+++ b/modules/footstone/src/string_view.cc
@@ -24,6 +24,15 @@
 
 using string_view = footstone::stringview::string_view;
 
+#ifdef __APPLE__
+#if defined(__clang__) && __clang_major__ >= 15
+std::size_t std::hash<footstone::stringview::string_view::u8string>::operator()(
+  const footstone::stringview::string_view::u8string& value) const noexcept {
+  return std::hash<std::string>()(std::string(value.begin(), value.end()));
+}
+#endif
+#endif
+
 #if defined(__GLIBC__) && !defined(__cpp_char8_t)
 std::size_t std::hash<string_view::u8string>::operator()(
   const string_view::u8string& value) const noexcept {