All the time, where ancient is, say, 15+ years old. I can't remember ever having an issue with it, unlike the reverse [1]. Even if there were issues, though, gl

All the time, where ancient is, say, 15+ years old. I can't remember ever having an issue with it, unlike the reverse [1]. Even if there were issues, though, glibc's symbol versioning is a different beast than the Linux ABI. 1. https://news.ycombinator.com/item?id=31963255 https://news.ycombinator.com/item?id=31963255