From 6e4552e653bef2b62525a6d66d127ae5fb9dadd9 Mon Sep 17 00:00:00 2001
From: yaito3014 <ykakeyama3014@gmail.com>
Date: Sun, 15 Feb 2026 04:24:20 +0900
Subject: [PATCH] Suppress warning

---
 CMakeLists.txt               | 7 ++++++-
 include/iris/type_traits.hpp | 8 +-------
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1451fa4..94d6d05 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,7 +133,12 @@ if(MSVC)
     )
 else()
     if(CMAKE_CXX_COMPILER_ID MATCHES Clang)
-        target_compile_options(_iris_cxx_common INTERFACE -fno-builtin-std-forward_like)
+        target_compile_options(
+            _iris_cxx_common
+            INTERFACE
+                -fno-builtin-std-forward_like
+                -Wno-c++26-extensions # workaround for warnings emitted when using pack indexing
+        )
     endif()
     target_compile_options(
         _iris_cxx_common
diff --git a/include/iris/type_traits.hpp b/include/iris/type_traits.hpp
index 3d9d008..b20d977 100644
--- a/include/iris/type_traits.hpp
+++ b/include/iris/type_traits.hpp
@@ -57,10 +57,6 @@ template<std::size_t I, class T>
 using at_c_t = at_c<I, T>::type;
 
 #if __cpp_pack_indexing >= 202311L // has native pack indexing
-# if defined(__clang__)
-#  pragma clang diagnostic push
-#  pragma clang diagnostic ignored "-Wc++26-extensions"
-# endif
 
 # define IRIS_CORE_PACK_INDEXING(I, Ts_ellipsis) Ts_ellipsis[I]
 
@@ -74,9 +70,7 @@ struct at_c<I, TT<Ts...>>
 {
     using type = Ts...[I];
 };
-# if defined(__clang__)
-#  pragma clang diagnostic pop
-# endif
+
 // ----------------------------------------------------------
 #else // no native pack indexing
 template<std::size_t I, class... Ts>