[Bug c++/103826] Bogus shift-negative-value warning in C++20 mode

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103826

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-12-25
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, when the paper was implemented (r9-4132), this warning was missed it
seems.

Note I notice clang warns about:
int main() {
    return (0x7000'0000) << 4;
}

Which is valid now too, GCC disabled the warning for C++20 with r9-4132.