[Bug c/102245] [12 Regression] false int-in-bool-context warning with shift

[roger at nextmovesoftware dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102245

--- Comment #8 from Roger Sayle <roger at nextmovesoftware dot com> ---
Alternate patch proposed:
https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579378.html