[Bug c++/115897] [14/15 Regression] vector_size attribute on alias template has no effect when used in a dependent variable template-id

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115897

--- Comment #9 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Looks like we also need to consider dependent attributes when stripping
non-template aliases.  Patch posted at
https://gcc.gnu.org/pipermail/gcc-patches/2024-July/657706.html, I wonder if it
fully handles your use case?