bug#62831: 29.0.90; Emacs-pretest-29.0.90 aarch64 on macOS crashes when receiving a three-finger tap.

[Sami Lahtinen]

Unfortunately I am unable to run GDB, as it seems that GDB doesn't run on aarch64.

I tried to debug using LLDB, but since I have no experience with these things I was unable to do so. I can try to find some time to learn the process next week, but it might take a while, as I have never done any debugging before. Maybe someone with more experience has access to an Apple silicon machine and can replicate the bug?

ps. Maybe I should explain, that the three-finger tap is a macOS feature that can search for a dictionary definition, web search etc. on a highlighted word as well as display info about files in the file browser etc. I'm just explaining this as it is a os-specific utility that some people might not be aware of. I have no idea how it works "under the hood".

pe 14. huhtik. 2023 klo 16.44 Eli Zaretskii (eliz@gnu.org) kirjoitti:

> From: Sami Lahtinen <sami.lahtinen@gmail.com>
> Date: Fri, 14 Apr 2023 15:46:28 +0300
>
> I will attach an .ips file from ~/Library/Logs/DiagnosticReports/ I hope this is what you are looking for,
> if not, can you please specify?

I meant the backtrace reported by a debugger.  Run Emacs under a
debugger, either GDB (preferred) or LLDB, and when Emacs crashes
produce the backtrace and post it.  In GDB, the command to display a
backtrace is "backtrace", or "bt" in short.  I don't know what is the
command in LLDB, sorry.

> My Emacs is the binary from emacsformacosx.com as-is. As far as I know, it is compiled without
> changes.

Does that site say anywhere if there are some changes?