diff options
Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/std/functional')
| -rw-r--r-- | gcc-4.9/libstdc++-v3/include/std/functional | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc-4.9/libstdc++-v3/include/std/functional b/gcc-4.9/libstdc++-v3/include/std/functional index 5a987d914..0e80fa37c 100644 --- a/gcc-4.9/libstdc++-v3/include/std/functional +++ b/gcc-4.9/libstdc++-v3/include/std/functional @@ -2149,8 +2149,15 @@ _GLIBCXX_HAS_NESTED_TYPE(result_type) using _Invoke = decltype(__callable_functor(std::declval<_Functor&>()) (std::declval<_ArgTypes>()...) ); + // Used so the return type convertibility checks aren't done when + // performing overload resolution for copy construction/assignment. + template<typename _Tp> + using _NotSelf = __not_<is_same<_Tp, function>>; + template<typename _Functor> - using _Callable = __check_func_return_type<_Invoke<_Functor>, _Res>; + using _Callable + = __and_<_NotSelf<_Functor>, + __check_func_return_type<_Invoke<_Functor>, _Res>>; template<typename _Cond, typename _Tp> using _Requires = typename enable_if<_Cond::value, _Tp>::type; @@ -2291,7 +2298,7 @@ _GLIBCXX_HAS_NESTED_TYPE(result_type) * reference_wrapper<F>, this function will not throw. */ template<typename _Functor> - _Requires<_Callable<_Functor>, function&> + _Requires<_Callable<typename decay<_Functor>::type>, function&> operator=(_Functor&& __f) { function(std::forward<_Functor>(__f)).swap(*this); |