Pure coincidence, perhaps not (see the other comments on this thread), but this did come across a few times as being a hack. For instance, on the OS ABI field

Pure coincidence, perhaps not (see the other comments on this thread), but this did come across a few times as being a hack. For instance, on the OS ABI field in ELF headers: > Fortunately we can get around this by just setting it to the FreeBSD ABI. This is because FreeBSD is the only UNIX operating system that checks this field. Or on loading a zero-byte segment into memory: > However if the size in memory is zero too, then OpenBSD will refuse to run the progarm, whereas the other kernels just don't care.