[Bug c++/124270] [13/14/15/16/17 Regression] constexpr routine into wrong value with -O1 -Wall

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

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

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[13/14/15 Regression]       |[13/14/15/16/17 Regression]
                   |constexpr routine into      |constexpr routine into
                   |wrong value with -O1 -Wall  |wrong value with -O1 -Wall
      Known to fail|                            |17.0

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I see on trunk (even w/o -Wall)

main:
.LFB4:
        .cfi_startproc
        subq    $8, %rsp
        .cfi_def_cfa_offset 16
        call    panic