[Bug c++/124270] [13/14/15 Regression] constexpr routine into wrong value with -O1 -Wall

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124270

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
      Known to fail|                            |15.2.0
            Summary|Optimizer folds constexpr   |[13/14/15 Regression]
                   |routine into wrong value    |constexpr routine into
                   |                            |wrong value with -O1 -Wall
           Keywords|                            |wrong-code
   Last reconfirmed|                            |2026-02-26
   Target Milestone|---                         |13.5

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Note for the trunk, you need -Wall to invoke the issue.
This has been a bug since at least GCC 7.1.0 even at least on x86_64.

This is a front-end issue.