[Bug c++/118775] [13 Regression] ICE in tree_to_uhwi with unique_ptr and addresss of var converted to an integer

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118775

--- Comment #12 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Marek Polacek
<[email protected]>:

https://gcc.gnu.org/g:064b4be33abf46ce6944277969e77a8bc5a97202

commit r13-10475-g064b4be33abf46ce6944277969e77a8bc5a97202
Author: Marek Polacek <[email protected]>
Date:   Thu Aug 20 15:01:37 2026 -0400

    c++: ICE with operator new[] in constexpr [PR118775]

    Here we ICE since r11-7740 because we no longer say that (long)&a
    (where a is a global var) is non_constant_p.  So VERIFY_CONSTANT
    does not return and we crash on tree_to_uhwi.  We should check
    tree_fits_uhwi_p before calling tree_to_uhwi.

            PR c++/118775

    gcc/cp/ChangeLog:

            * constexpr.cc (cxx_eval_call_expression): Check tree_fits_uhwi_p.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp2a/constexpr-new24.C: New test.
            * g++.dg/cpp2a/constexpr-new25.C: New test.

    Reviewed-by: Jason Merrill <[email protected]>
    (cherry picked from commit aa55a6a30bc4778938af42dac9b624cf67fa4698)