Comment 60 for bug 86103

This bug has to be fixed.

Xlib is an old and widespread library, and there is tons of existing and *working* code that needs to be kept working and can't be recompiled.

We can argue until the cows come home about whose bug it is, but it doesn't matter. This is an ABI breakage: apps that worked before don't work now.

Nobody serious about compatibility can ship xcb with that assertion in place. It has to go away.