[Bug c++/63241] Internal error in gimplify_init_constructor when using constexr and multidimensional arrays

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63241

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is already fixed in current 4_9-branch. I'm adding the testcase and
closing the bug.