[Bug c++/61105] [constexpr] accepts-invalid with new-expression in constant expression

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61105

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Richard's comment 0 testcase gives an error since r238909 (as Martin noted).

Martin's comment 6 testcase gives an error since r12-388:

    c++: Remove GCC12 FIXME for DR1312

    This patch removes a FIXME I left for myself for GCC 12, along with
    adjusting the relevant test.