bug#47284: emacs 26/27 SEGV

[Stefan Kangas]

Tjernlund <tjernlund@tjernlund.se> writes:

> File / Revert Buffer in the menu bar over a remote display with ping > 3 ms 
> gives me a SEGV:

What version of Emacs is this?  Could you please include the details
from `report-emacs-bug'?

Do you have a recipe to reproduce this, starting from "emacs -Q"?

> (gdb) bt
> #0  0x00007ffff7ddc594 in GetnormalGC (lw=lw@entry=0x555556999670) at 
> Label.c:310
> #1  0x00007ffff7ddcc92 in Initialize (request=<optimized out>, 
> new=0x555556999670, args=<optimized out>, num_args=<optimized out>) at 
> Label.c:401
> #2  0x00007ffff7d543b9 in CallInitialize
>     (class=0x7ffff7e19280 <labelClassRec>,
> req_widget=req_widget@entry=0x7fffffffb710,
> new_widget=new_widget@entry=0x555556999670, args=args@entry=0x7fffffffbb80,
> num_args=<optimized out>, num_args@entry=0x4) at
> /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:219
> #3  0x00007ffff7d54d30 in xtCreate
>     (name=name@entry=0x7ffff7e06065 "label", class=class@entry=0x0,
> widget_class=widget_class@entry=0x7ffff7e19280 <labelClassRec>,
> parent=parent@entry=0x555556999440, default_screen=0x555555e21bf0,
> args=args@entry=0x7fffffffbb80, num_args=0x4, typed_args=0x0,
> num_typed_args=<optimized out>, parent_constraint_class=0x7ffff7e18ac0
> <dialogClassRec>, post_proc=0x7ffff7d54400 <widgetPostProc>) at
> /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:415
> #4  0x00007ffff7d55202 in _XtCreateWidget
>     (name=name@entry=0x7ffff7e06065 "label",
> widget_class=widget_class@entry=0x7ffff7e19280 <labelClassRec>,
> parent=parent@entry=0x555556999440, args=args@entry=0x7fffffffbb80,
> num_args=0x4, typed_args=typed_args@entry=0x0, num_typed_args=<optimized out>)
> at /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:581
> #5  0x00007ffff7d55582 in XtCreateManagedWidget
>     (name=name@entry=0x7ffff7e06065 "label", widget_class=0x7ffff7e19280
> <labelClassRec>, parent=parent@entry=0x555556999440,
> args=args@entry=0x7fffffffbb80, num_args=<optimized out>) at
> /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:619
> #6  0x00007ffff7ddae7f in Initialize (request=<optimized out>, 
> new=0x555556999440, args=<optimized out>, num_args=<optimized out>) at 
> Dialog.c:176
> #7  0x00007ffff7d543b9 in CallInitialize
>     (class=0x7ffff7e18ac0 <dialogClassRec>,
> req_widget=req_widget@entry=0x7fffffffbda0,
> new_widget=new_widget@entry=0x555556999440, args=args@entry=0x7fffffffc2b0,
> num_args=<optimized out>, num_args@entry=0x0) at
> /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:219
> #8  0x00007ffff7d54d30 in xtCreate
>     (name=name@entry=0x5555568f4b50 "Q2BR1", class=class@entry=0x0,
> widget_class=widget_class@entry=0x7ffff7e18ac0 <dialogClassRec>,
> parent=parent@entry=0x55555692ab30, default_screen=0x555555e21bf0,
> args=args@entry=0x7fffffffc2b0, num_args=0x0, typed_args=0x0,
> num_typed_args=<optimized out>, parent_constraint_class=0x0,
> post_proc=0x7ffff7d54400 <widgetPostProc>) at
> /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:415
> #9  0x00007ffff7d55202 in _XtCreateWidget
>     (name=name@entry=0x5555568f4b50 "Q2BR1",
> widget_class=widget_class@entry=0x7ffff7e18ac0 <dialogClassRec>,
> parent=parent@entry=0x55555692ab30, args=args@entry=0x7fffffffc2b0,
> num_args=0x0, typed_args=typed_args@entry=0x0, num_typed_args=<optimized out>)
> at /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:581
> #10 0x00007ffff7d55582 in XtCreateManagedWidget
>     (name=name@entry=0x5555568f4b50 "Q2BR1", widget_class=0x7ffff7e18ac0
> <dialogClassRec>, parent=parent@entry=0x55555692ab30,
> args=args@entry=0x7fffffffc2b0, num_args=num_args@entry=0x0) at
> /var/tmp/portage/x11-libs/libXt-1.2.1/work/libXt-1.2.1/src/Create.c:619
> #11 0x0000555555774c37 in make_dialog
>     (name=0x5555568f4b50 "Q2BR1", parent=<optimized out>, pop_up_p=<optimized
> out>, shell_title=0x555555798741 "Question", text_input_slot=<optimized out>,
> radio_box=<optimized out>, list=0x0, left_buttons=0x1, right_buttons=0x1,
> instance=0x5555568f4c90, icon_name=<optimized out>) at lwlib-Xaw.c:553
> #12 0x00005555557758e7 in xaw_create_dialog (instance=<optimized out>) at 
> lwlib-Xaw.c:731
> #13 0x000055555576e867 in instantiate_widget_instance 
> (instance=0x5555568f4c90) at lwlib.c:726
> #14 allocate_widget_instance (pop_up_p=0x1, parent=<optimized out>, 
> info=<optimized out>) at lwlib.c:223
> #15 lw_make_widget (id=<optimized out>, parent=<optimized out>, 
> pop_up_p=<optimized out>) at lwlib.c:770
> #16 0x00005555555f5c41 in create_and_show_dialog (f=0x555555efeea0, 
> first_wv=0x5555568f4ac0) at xmenu.c:1788
> #17 x_dialog_show (title=<optimized out>, error_name=<synthetic pointer>, 
> header=0x0, f=0x555555efeea0) at xmenu.c:1940
> #18 xw_popup_dialog (f=0x555555efeea0, header=0x0, contents=<optimized out>) 
> at xmenu.c:2003
> #19 0x00005555556f1256 in Fyes_or_no_p (prompt=0x5555568c8ef4) at lisp.h:1027
> #20 0x00005555556e6873 in Ffuncall (nargs=0x2, 
> args=args@entry=0x7fffffffc748) at eval.c:2795
> #21 0x0000555555717fc8 in exec_byte_code
>     (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized 
> out>, args_template=<optimized out>, nargs=<optimized out>, args=<optimized 
> out>) at bytecode.c:633
> #22 0x00005555556e67d7 in Ffuncall (nargs=0x3, 
> args=args@entry=0x7fffffffcb50) at eval.c:2809
> #23 0x0000555555717fc8 in exec_byte_code
>     (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized 
> out>, args_template=<optimized out>, nargs=<optimized out>, args=<optimized 
> out>) at bytecode.c:633
> #24 0x00005555556e67d7 in Ffuncall (nargs=nargs@entry=0x2, 
> args=args@entry=0x7fffffffd008) at eval.c:2809
> #25 0x00005555556e31e1 in Ffuncall_interactively (nargs=0x2, 
> args=0x7fffffffd008) at callint.c:254
> #26 0x00005555556e6873 in Ffuncall (nargs=0x3, args=0x7fffffffd000) at 
> eval.c:2795
> #27 0x00005555556e6c33 in Fapply (nargs=nargs@entry=0x3, 
> args=args@entry=0x7fffffffd000) at eval.c:2382
> #28 0x00005555556e474a in Fcall_interactively (function=0x2aaa9d3fc650, 
> record_flag=0x0, keys=0x7ffff350180d) at callint.c:342
> #29 0x00005555556e6873 in Ffuncall (nargs=0x4, 
> args=args@entry=0x7fffffffd0f8) at eval.c:2795
> #30 0x0000555555717fc8 in exec_byte_code
>     (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized 
> out>, args_template=<optimized out>, nargs=<optimized out>, args=<optimized 
> out>) at bytecode.c:633
> #31 0x00005555556e67d7 in Ffuncall (nargs=0x2, args=0x7fffffffd4a0) at 
> eval.c:2809
> #32 0x00005555556e692a in call1 (fn=fn@entry=0x4320, arg1=<optimized out>) at 
> eval.c:2655
> #33 0x000055555567e728 in command_loop_1 () at lisp.h:1027
> #34 0x00005555556e5b07 in internal_condition_case 
> (bfun=bfun@entry=0x55555567e330 <command_loop_1>, 
> handlers=handlers@entry=0x90, hfun=hfun@entry=0x555555675240 <cmd_error>)
> --Type <RET> for more, q to quit, c to continue without paging--
>     at eval.c:1356
> #35 0x000055555566ff14 in command_loop_2 (ignore=ignore@entry=0x0) at 
> lisp.h:1027
> #36 0x00005555556e5a61 in internal_catch (tag=tag@entry=0xd3e0, 
> func=func@entry=0x55555566fef0 <command_loop_2>, arg=arg@entry=0x0) at 
> eval.c:1117
> #37 0x000055555566febb in command_loop () at lisp.h:1027
> #38 0x0000555555674e56 in recursive_edit_1 () at keyboard.c:714
> #39 0x0000555555675182 in Frecursive_edit () at keyboard.c:786
> #40 0x000055555559bb1f in main (argc=0x2, argv=<optimized out>) at 
> emacs.c:2067