https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61502
--- Comment #34 from Alexander Cherepanov <ch3root at openwall dot com> --- It seems to me that problems with the optimization `if (p == q) use p` -> `if (p == q) use q` (comment 4 etc.) are not specific to past-the-end pointers. So I filed a separated bug for it with various testcases -- see pr93051. The same for the optimization `p == q ? p : q` -> `q` (comment 30) -- see pr93052.
