RE: redisplay crash: here we go agaaaaaaaaaaaiiiiiiiiiiiiiiiiiiiiiiiin!!!!!
> It seems likely that your changes have tickled something, since
we do
> not see these on 21.4.x at all. I'm wondering whether the removal of
> the window_mirror updates in mark_redisplay could be responsible.
possible, but it seems unlikely -- and if so, i've merely exposed an
existing bug; that code was clearly wrong and was causing other
crashes. i've seen periodic redisplay crashes for a long time,
certainly going back to 21.4 and before, some of which i fixed, but
I've not seen any, and I haven't seen any reported recently.
others have been too random to diagnose. and i know there's lots
of
problems with redisplay -- ms windows, gutters, etc. have stretched
redisplay far beyond its initial design. for example, the gutter code
introduced calling lisp inside of redisplay -- something which it
definitely was not designed for. it was patched around [note this:
The specifier code always ended up calling lisp at some point within
redisplay. I don't believe specifiers were my invention.
andy