Hi there, I detected a patch coming from the "Linux From Scratch" project, which solves some compiler warnings[1].
[1] http://www.linuxfromscratch.org/patches/lfs/development/sysvinit-2.89-consolidated-1.patch Plus, after applying the patch, here is another mark from GCC 7: killall5.c: In function 'readproc': killall5.c:654:7: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((p->nfs = check4nfs(path, buf))) ^ killall5.c:656:3: note: here case DO_STAT: ^~~~
