[Bug c++/115900] [14/15 Regression] constexpr object modification during construction gives "Modifying a const object is not allowed in a constant expression"

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115900

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[14 Regression] constexpr   |[14/15 Regression]
                   |object modification during  |constexpr object
                   |construction gives          |modification during
                   |"Modifying a const object   |construction gives
                   |is not allowed in a         |"Modifying a const object
                   |constant expression"        |is not allowed in a
                   |                            |constant expression"
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
                 CC|                            |mpolacek at gcc dot gnu.org
           Priority|P3                          |P2
   Last reconfirmed|                            |2024-07-12
   Target Milestone|---                         |14.2
           Keywords|                            |rejects-valid

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r14-409:

commit 4b8d0d4d7fd245ef85c7801e7838845502a5a61d
Author: Jason Merrill <ja...@redhat.com>
Date:   Mon May 1 17:41:44 2023 -0400

    c++: std::variant slow to compile [PR109678]