https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118403
--- Comment #12 from Stephen Hemminger <stephen at networkplumber dot org> --- I tried to use the documented flag $ gcc-15 -fzero-init-padding-bits=all gcc-15: error: unrecognized command-line option ‘-fzero-init-padding-bits=all’ gcc-15: fatal error: no input files compilation terminated. It is in the man page and help string but parsing of the option appears to be broken.