Re: [MPS-test] scratch/igc branch (commit: 42731228d24) crashed

["Gerd Möllmann" <gerd.moellmann@gmail.com>]

Eval Exec <execvy@gmail.com> writes:

> Hello,
>
> I wanted to help test the scratch/igc branch, so I compiled it from
> commit 42731228d24.
>
> Then I build it by
> ```bash
> make extraclean
> ./autogen.sh \
>   && ./configure \
>   --prefix=$(realpath ../emacs-build)\
>   --with-mps \
>   --with-imagemagick \
>   --with-modules --with-x-toolkit=lucid --without-compress-install \
>   --without-toolkit-scroll-bars --with-native-compilation  --with-mailutils\
>   --with-tree-sitter --with-xinput2  \
>   --with-dbus  --with-native-compilation=aot \
>   --with-file-notification=inotify\
>   && make -j20 install
>
> ```
>
> It works perfectly for the first hour, but then it crashes, and I
> don't know how to reproduce the issue.
>
> I think the crash is caused by "window size adjustments"
>
> ```
> (gdb) bt
> #0  0x00007f47afea2efc in __pthread_kill_implementation () from
> /nix/store/dbcw19dshdwnxdv5q2g6wldj6syyvq7l-glibc-2.39-52/lib/libc.so.6
> #1  0x00007f47afe52e86 in raise () from
> /nix/store/dbcw19dshdwnxdv5q2g6wldj6syyvq7l-glibc-2.39-52/lib/libc.so.6
> #2  0x00000000004243a4 in terminate_due_to_signal (sig=sig@entry=8,
> backtrace_limit=backtrace_limit@entry=40) at emacs.c:470
> #3  0x00000000004248fc in handle_fatal_signal (sig=sig@entry=8) at sysdep.c:1800
> #4  0x000000000056f568 in deliver_thread_signal (sig=8,
> handler=0x4248f1 <handle_fatal_signal>) at sysdep.c:1792
> #5  0x000000000056f669 in deliver_fatal_thread_signal (sig=<optimized
> out>) at sysdep.c:1812
> #6  <signal handler called>
> #7  0x000000000069e35e in pixel_to_char_size
> (pixel_width=pixel_width@entry=482,
> pixel_height=pixel_height@entry=76,
> char_width=char_width@entry=0x7ffced20da38,

Assuming this is an MPS build (please check with (featurep 'mps)).

I can't see anything obvious from the backtrace. Can you try to look at
pixel_to_char_size in GDB? Or describe how to reproduce this? I'm myself
on macOS, so cannot really help much in this case, I guess.