2016-07-27 20:25 GMT+02:00 Jonathan Wakely <jwak...@redhat.com>:
> I propose that we remove the following non-standard traits in GCC 7:
>
> /// has_trivial_default_constructor (temporary legacy)
> template<typename _Tp>
> struct has_trivial_default_constructor
> : public integral_constant<bool, __has_trivial_constructor(_Tp)>
> { } _GLIBCXX_DEPRECATED;
>
> /// has_trivial_copy_constructor (temporary legacy)
> template<typename _Tp>
> struct has_trivial_copy_constructor
> : public integral_constant<bool, __has_trivial_copy(_Tp)>
> { } _GLIBCXX_DEPRECATED;
>
> /// has_trivial_copy_assign (temporary legacy)
> template<typename _Tp>
> struct has_trivial_copy_assign
> : public integral_constant<bool, __has_trivial_assign(_Tp)>
> { } _GLIBCXX_DEPRECATED;
>
> They were in C++0x drafts but were removed before the final C++11
> standard, so have never been part of ISO C++. They've been deprecated
> since GCC 5.1: https://gcc.gnu.org/gcc-5/changes.html
>
> People who need that functionality can still use the built-ins
> directly, we don't need to define non-standard traits.
>
> Alternatively, we could move them to __gnu_cxx, so they don't pollute
> the namespace by default, or only define them when __STRICT_ANSI__ is
> not defined. I prefer simply removing them.
+1 for removing them.
- Daniel
