[Bug c++/100032] [9/10 Regression] renaming alias template that also adds cv-qualifiers is deemed equivalent to underlying template

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100032

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:945c2afcb390dd040510ee7a2dc996ad204031c5

commit r9-10162-g945c2afcb390dd040510ee7a2dc996ad204031c5
Author: Jason Merrill <jason@redhat.com>
Date:   Tue Apr 13 14:49:29 2021 -0400

    c++: alias template equivalence and cv-quals [PR100032]

    We also need to check that the cv-qualifiers are the same.

    gcc/cp/ChangeLog:

            PR c++/100032
            * pt.c (get_underlying_template): Compare TYPE_QUALS.

    gcc/testsuite/ChangeLog:

            PR c++/100032
            * g++.dg/cpp0x/alias-decl-equiv1.C: New test.