[HexDecOctBin]

Glibc is the opposite of backwards compatible. This thread I was a part of explains some issues faced in the past: https://news.ycombinator.com/item?id=47029789

[VorpalWay]

Reading the linked bug report about executable stacks they fixed it? So they did the right thing. I'm not saying there will never be bugs (no non-trivial software is bug free), but as long as those are handled correctly that seems reasonable to me.