2020.10.30 15:55:01 (1322190276333498368) from Daniel J. Bernstein:
People who trust optimizing compilers to work correctly seem to be surprised by a 2020 gcc bug report https://gcc.gnu.org/pipermail/gcc-bugs/2020-May/702175.html where the optimizer treats byte arrays as equal if they pass strcmp. For comparison, here's a gcc bug report I filed last century: https://gcc.gnu.org/pipermail/gcc-bugs/1999-December/031165.html