Linux does break userspace. It's inevitable. But everyone takes care it doesn't happen and if you report the regression immediately it will be fixed. But if it

Linux does break userspace. It's inevitable. But everyone takes care it doesn't happen and if you report the regression immediately it will be fixed. But if it's broken for 3 years and you didn't say anything, nobody will make a fix for it. Or it's unlikely. A.out isn't used anymore. Like, not even the most ancient linux machines are likely to use a.out format. It's atm going to be hidden behind a flag, default off, if nobody complains then it'll be completely removed in a few releases.