[Bug c++/105191] [12 Regression] '<expression>' "is not a constant expression" regression in GCC 12

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105191

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:40f749b364b740f41ea6b211f81c21919a2e8bee

commit r12-8380-g40f749b364b740f41ea6b211f81c21919a2e8bee
Author: Jason Merrill <jason@redhat.com>
Date:   Fri May 13 16:07:10 2022 -0400

    c++: array {}-init [PR105589]

    My patch for 105191 made us use build_value_init more frequently from
    build_vec_init_expr, but build_value_init doesn't like to be called to
    initialize a class in a template.  That's caused trouble in the past, and
    seems like a strange restriction, so let's fix it.

            PR c++/105589
            PR c++/105191
            PR c++/92385

    gcc/cp/ChangeLog:

            * init.cc (build_value_init): Handle class in template.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/initlist-array16.C: New test.