bug#42655: 27.1; iconify-frame on a Lucid build may stuck the frame

[Tino Calancha <tino.calancha@gmail.com>]

Eli Zaretskii <eliz@gnu.org> writes:

> Please try this now, after attaching the debugger:
>
>  (gdb) source /path/to/emacs/src/.gdbinit
>  (gdb) p selected_frame
>  (gdb) xtype

(gdb) 
source .gdbinit
&"source .gdbinit\n"
~"SIGINT is used by the debugger.\nAre you sure you want to change it? "
~"(y or n) [answered Y; input not from terminal]\n"
=cmd-param-changed,param="print pretty",value="on"
~"DISPLAY = :0\n"
~"TERM = xterm\n"
~"Breakpoint 1 at 0x59d9ad: file emacs.c, line 378.\n"
=breakpoint-created,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x000000000059d9ad",func="terminate_due_to_signal",file="emacs.c",fullname="/home/calancha/soft/emacs-master/src/emacs.c",line="378",thread-groups=["i1"],times="0",original-location="terminate_due_to_signal"}
~"Breakpoint 2 at 0x56d2e3: file xterm.c, line 10135.\n"
=breakpoint-created,bkpt={number="2",type="breakpoint",disp="keep",enabled="y",addr="0x000000000056d2e3",func="x_error_quitter",file="xterm.c",fullname="/home/calancha/soft/emacs-master/src/xterm.c",line="10135",thread-groups=["i1"],times="0",original-location="x_error_quitter"}
^done
(gdb) 
p selected_frame
&"p selected_frame\n"
~"$1 = XIL(0x14f0835)\n"
^done
(gdb) 
xtype
&"xtype\n"
~"Lisp_Vectorlike"
~"\n"
~"PVEC_FRAME"
~"\n"
^done
(gdb)