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bug#21380: 25.0.50; GTK-induced segfault when scheduling timer from wind
From: |
Po Lu |
Subject: |
bug#21380: 25.0.50; GTK-induced segfault when scheduling timer from window-configuration-change-hook |
Date: |
Fri, 29 Apr 2022 21:44:43 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
> First, I see no guarantee that atimers cannot run Lisp, ever. And
> second, even if they don't run Lisp, they could run code which
> directly or indirectly modifies Vtimer_list, and we cannot allow that
> in this case.
>
> IOW, the problem is not that Lisp isn't supposed to run in this
> situation, the problem is that we examine and modify Vtimer_list, so
> we cannot allow any code that could potentially modify that behind our
> backs while we are at that.
Hmm, okay, thanks for explaining. I guess some code called by the input
polling atimer eventually ends up modifying `timer-list' when input
polling is enabled.