From f31a9da4d803efe0788b7fd2428f5787ad59edea Mon Sep 17 00:00:00 2001
From: Adder <adder_2003@yahoo.com>
Date: Tue, 7 Jan 2025 00:19:34 +0200
Subject: [PATCH] `integral_constant`: As per `std`: Mark `operator T` as
 `noexcept`.

In the C++ Standard Library, `std::integral_constant`
has its `operator T` marked as `noexcept`:

https://timsong-cpp.github.io/cppwp/meta.help

We hereby do the same for the Boost version.
---
 include/boost/type_traits/integral_constant.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/type_traits/integral_constant.hpp b/include/boost/type_traits/integral_constant.hpp
index 9a65df3..284ed02 100644
--- a/include/boost/type_traits/integral_constant.hpp
+++ b/include/boost/type_traits/integral_constant.hpp
@@ -63,7 +63,7 @@ namespace boost{
          const void* const pdata = data;
          return *static_cast<const mpl::integral_c<T, val>*>(pdata);
       }
-      BOOST_CONSTEXPR operator T()const { return val; }
+      BOOST_CONSTEXPR operator T()const BOOST_NOEXCEPT { return val; }
    };
 
    template <class T, T val>
@@ -83,7 +83,7 @@ namespace boost{
          const void* const pdata = data;
          return *static_cast<const mpl::bool_<val>*>(pdata);
       }
-      BOOST_CONSTEXPR operator bool()const { return val; }
+      BOOST_CONSTEXPR operator bool()const BOOST_NOEXCEPT { return val; }
    };
 
    template <bool val>