bug#43812: 28.0.50; segfault in ns_clear_under_internal_border

[Alan Third]

On Sun, Oct 04, 2020 at 09:30:04PM -0700, Sean Farley via Bug reports for GNU 
Emacs, the Swiss army knife of text editors wrote:
> 
> (apologies if this is sent twice, I got a bounce back on the first
> attempt)
> 
> This one is difficult to figure out. I can reproduce it reliably in my
> setup but I don't know how to find a minimal working example.
> 
> The segfault is triggered for me in the following manner:
> 
> - trigger a company popup in lisp for a library not yet loaded (for me
>   it was mu4e; only the autoloads existed)
> - load said library
> - trigger another company popup for said library
> - segfault

This is a bit of a shot in the dark, but does the attached patch fix
it?

If not can you try to find out which variable is causing the segfault?
-- 
Alan Third

0001-Fix-crash-when-creating-enw-NS-frame-bug-43812.patch
Description: Text document