Add noexcept to std::integral_constant members

* include/std/type_traits (integral_constant): Make member functions noexcept (LWG 2346). * include/std/utility (integer_sequence): Likewise. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255312 138bc75d-0d04-0410-961f-82ee72b054a4
dadadax · Dec 1, 2017 · 962c279 · 962c279
1 parent f0efd2e
commit 962c279
Show file tree

Hide file tree

Showing 3 changed files with 9 additions and 3 deletions.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
@@ -1,3 +1,9 @@
+2017-12-01  Jonathan Wakely  <[email protected]>
+
+	* include/std/type_traits (integral_constant): Make member functions
+	noexcept (LWG 2346).
+	* include/std/utility (integer_sequence): Likewise.
+
 2017-11-30  Jonathan Wakely  <[email protected]>
 
 	PR libstdc++/65927

diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits
@@ -71,12 +71,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       static constexpr _Tp                  value = __v;
       typedef _Tp                           value_type;
       typedef integral_constant<_Tp, __v>   type;
-      constexpr operator value_type() const { return value; }
+      constexpr operator value_type() const noexcept { return value; }
 #if __cplusplus > 201103L
 
 #define __cpp_lib_integral_constant_callable 201304
 
-      constexpr value_type operator()() const { return value; }
+      constexpr value_type operator()() const noexcept { return value; }
 #endif
     };
 

diff --git a/libstdc++-v3/include/std/utility b/libstdc++-v3/include/std/utility
@@ -321,7 +321,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     struct integer_sequence
     {
       typedef _Tp value_type;
-      static constexpr size_t size() { return sizeof...(_Idx); }
+      static constexpr size_t size() noexcept { return sizeof...(_Idx); }
     };
 
   /// Alias template make_integer_sequence