bug#53254: 28.0.60; Crash in composition_adjust_point while typing

[Eli Zaretskii]

> Date: Fri, 14 Jan 2022 21:30:06 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Typing a document, I got a crash with the following backtrace:
> 
> #0  0x00007f356943585c in __pthread_kill_implementation () at /lib64/libc.so.6
> #1  0x00007f35693e86b6 in raise () at /lib64/libc.so.6
> #2  0x000000000041db0a in terminate_due_to_signal (sig=sig@entry=11, 
> backtrace_limit=backtrace_limit@entry=40) at emacs.c:437
> #3  0x000000000041df7d in handle_fatal_signal (sig=sig@entry=11) at 
> sysdep.c:1762
> #4  0x000000000051a718 in deliver_thread_signal (sig=sig@entry=11, 
> handler=0x41df72 <handle_fatal_signal>) at sysdep.c:1754
> #5  0x000000000051a789 in deliver_fatal_thread_signal (sig=11) at 
> sysdep.c:1774
> #6  handle_sigsegv (sig=11, siginfo=<optimized out>, arg=<optimized out>) at 
> sysdep.c:1867
> #7  0x00007f35693e8760 in <signal handler called> () at /lib64/libc.so.6
> #8  face_at_buffer_position (w=w@entry=0x3038d1b0, pos=pos@entry=31829, 
> endptr=endptr@entry=0x7fff02e94768, limit=<optimized out>, mouse=<optimized 
> out>, base_face_id=base_face_id@entry=-1, attr_filter=<optimized out>) at 
> xfaces.c:6441
> #9  0x0000000000594f66 in font_range (pos=pos@entry=31829, 
> pos_byte=pos_byte@entry=32669, limit=limit@entry=0x7fff02e94808, 
> w=w@entry=0x3038d1b0, face=face@entry=0x0, string=string@entry=0x0, ch=62) at 
> font.c:3928

Ignore my previous message.  I installed a fix.