libstdc++: Add noexcept to some std::function internals

libstdc++-v3/ChangeLog:

	* include/bits/std_function.h (_Any_data::_M_access): Add
	noexcept.
	(_Function_base::_Base_manager::_M_get_pointer): Likewise.
	(_Function_base::_Base_manager::_M_not_empty_function):
	Likewise.

diff --git a/libstdc++-v3/include/bits/std_function.h b/libstdc++-v3/include/bits/std_function.h
index 3dda820..5573844 100644 (file)
--- a/libstdc++-v3/include/bits/std_function.h
+++ b/libstdc++-v3/include/bits/std_function.h
@@ -82,17 +82,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
   union [[gnu::may_alias]] _Any_data
   {
-    void*       _M_access()       { return &_M_pod_data[0]; }
-    const void* _M_access() const { return &_M_pod_data[0]; }
+    void*       _M_access()       noexcept { return &_M_pod_data[0]; }
+    const void* _M_access() const noexcept { return &_M_pod_data[0]; }
 
     template<typename _Tp>
       _Tp&
-      _M_access()
+      _M_access() noexcept
       { return *static_cast<_Tp*>(_M_access()); }
 
     template<typename _Tp>
       const _Tp&
-      _M_access() const
+      _M_access() const noexcept
       { return *static_cast<const _Tp*>(_M_access()); }
 
     _Nocopy_types _M_unused;
@@ -131,7 +131,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
        // Retrieve a pointer to the function object
        static _Functor*
-       _M_get_pointer(const _Any_data& __source)
+       _M_get_pointer(const _Any_data& __source) noexcept
        {
          if _GLIBCXX17_CONSTEXPR (__stored_locally)
            {
@@ -217,22 +217,22 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
        template<typename _Signature>
          static bool
-         _M_not_empty_function(const function<_Signature>& __f)
+         _M_not_empty_function(const function<_Signature>& __f) noexcept
          { return static_cast<bool>(__f); }
 
        template<typename _Tp>
          static bool
-         _M_not_empty_function(_Tp* __fp)
+         _M_not_empty_function(_Tp* __fp) noexcept
          { return __fp != nullptr; }
 
        template<typename _Class, typename _Tp>
          static bool
-         _M_not_empty_function(_Tp _Class::* __mp)
+         _M_not_empty_function(_Tp _Class::* __mp) noexcept
          { return __mp != nullptr; }
 
        template<typename _Tp>
          static bool
-         _M_not_empty_function(const _Tp&)
+         _M_not_empty_function(const _Tp&) noexcept
          { return true; }
       };