bug#71289: 30.0.50; cmcheckmagic aborts when tty_write_glyphs writes "Garbage collecting..." in some cases

[Eli Zaretskii]

> From: Daniel Clemente <n142857@gmail.com>
> Date: Fri, 31 May 2024 17:09:29 +0000
> Cc: Eli Zaretskii <eliz@gnu.org>
> 
> I also saw a new type of TTY+GC error (not sure if it's the same issue
> as this bug):
> 
> alloc.c:7517: Emacs fatal error: assertion failed: t->name != NULL
> 
> Breakpoint 1, terminate_due_to_signal (sig=6,
> backtrace_limit=2147483647) at emacs.c:443
> 443      signal (sig, SIG_DFL);
> (gdb) bt
> #0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:443
> #1  0x000055555573591a in die (msg=0x55555586f838 "t->name != NULL",
> file=0x55555586e97e "alloc.c", line=7517) at alloc.c:8082
> #2  0x00005555557346e8 in mark_terminals () at alloc.c:7517

If this was while you only resized the terminal, how come a terminal
was deleted?  Any idea what would cause this?