[Bug c++/58855] Attributes ignored on type alias in template

[gcc at ebasoft dot com.pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58855

gcc at ebasoft dot com.pl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gcc at ebasoft dot com.pl

--- Comment #3 from gcc at ebasoft dot com.pl ---
This bug is still present in gcc version 11.2.1 20220115

namespace concepts
{
 template<typename T>
 concept arithmetic = std::integral<T> || std::floating_point<T>;
}
template<concepts::arithmetic T>
using point_vector = T __attribute__((__vector_size__(sizeof(T)*2)));

warning: ignoring attributes applied to dependent type ‘T’ without an
associated declaration [-Wattributes]
   70 |     using point_vector = T
__attribute__((__vector_size__(sizeof(T)*2)));
      |                                                                       
^