cleanup

Author: chfast

include/intx/intx.hpp

@@ -15,19 +15,9 @@
 #include <tuple>
 #include <type_traits>
 
-#if defined(__clang__)
-    #pragma clang diagnostic push
-    #pragma clang diagnostic ignored "-Wunknown-attributes"
-#elif defined(__GNUC__)
-    #pragma GCC diagnostic push
-    #if __GNUC__ >= 12
-        #pragma GCC diagnostic ignored_attributes "vend::"
-    #else
-        #pragma GCC diagnostic ignored "-Wattributes"
-    #endif
-#elif defined(_MSC_VER)
+#ifdef _MSC_VER
     #pragma warning(push)
-    #pragma warning(disable : 5030)
+    #pragma warning(disable : 5030)  // Allow unknown attributes.
 #endif
 
 
@@ -1624,7 +1614,7 @@ struct normalized_div_args  // NOLINT(cppcoreguidelines-pro-type-member-init)
 };
 
 template <unsigned M, unsigned N>
-[[gnu::always_inline, vend::unknown]] inline normalized_div_args<M, N> normalize(
+[[gnu::always_inline]] inline normalized_div_args<M, N> normalize(
     const uint<M>& numerator, const uint<N>& denominator) noexcept
 {
     static constexpr auto num_numerator_words = uint<M>::num_words;
@@ -2115,10 +2105,6 @@ inline void store(uint8_t* dst, const uint256& x) noexcept
 
 }  // namespace intx
 
-#if defined(__clang__)
-    #pragma clang diagnostic pop
-#elif defined(__GNUC__)
-    #pragma GCC diagnostic pop
-#elif defined(_MSC_VER)
+#ifdef _MSC_VER
     #pragma warning(pop)
 #endif