[Bug c++/91369] Implement P0784R7: constexpr new

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91369

--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Oct 30 21:55:12 2019
New Revision: 277649

URL: https://gcc.gnu.org/viewcvs?rev=277649&root=gcc&view=rev
Log:
        PR c++/91369 - Implement P0784R7: constexpr new
        * constexpr.c (cxx_replaceable_global_alloc_fn): Don't return true
        for placement new.
        (cxx_placement_new_fn, is_std_construct_at): New functions.
        (cxx_eval_call_expression): Allow placement new in std::construct_at.
        (potential_constant_expression_1): Likewise.

        * g++.dg/cpp2a/constexpr-new5.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp2a/constexpr-new5.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/testsuite/ChangeLog