#0  0x000000000063f535 in font_finish_cache (f=0x1404710, driver=0xd0f800 <xfont_driver>) at font.c:2591
#1  0x0000000000642ccd in font_update_drivers (f=0x1404710, new_drivers=0) at font.c:3539
#2  0x0000000000429e82 in delete_frame (frame=20989717, force=0) at frame.c:1662
#3  0x000000000042a647 in Fdelete_frame (frame=0, force=0) at frame.c:1839
#4  0x0000000000624959 in Ffuncall (nargs=1, args=0x7fffffffdda8) at eval.c:2696
#5  0x000000000061afa2 in Ffuncall_interactively (nargs=1, args=0x7fffffffdda8) at callint.c:252
#6  0x00000000006247eb in Ffuncall (nargs=2, args=0x7fffffffdda0) at eval.c:2673
#7  0x000000000061d4ae in Fcall_interactively (function=17232, record_flag=0, keys=14537909) at callint.c:840
#8  0x0000000000624994 in Ffuncall (nargs=4, args=0x7fffffffe098) at eval.c:2700
#9  0x000000000066f3df in exec_byte_code (bytestr=10946140, vector=10946173, maxdepth=54, args_template=4102, nargs=1, 
    args=0x7fffffffe5f0) at bytecode.c:880
#10 0x0000000000625271 in funcall_lambda (fun=10946093, nargs=1, arg_vector=0x7fffffffe5e8) at eval.c:2855
#11 0x0000000000624ba8 in Ffuncall (nargs=2, args=0x7fffffffe5e0) at eval.c:2742
#12 0x00000000006242e6 in call1 (fn=14784, arg1=17232) at eval.c:2552
#13 0x00000000005789a1 in command_loop_1 () at keyboard.c:1479
#14 0x000000000062104a in internal_condition_case (bfun=0x578178 <command_loop_1>, handlers=19056, hfun=0x5777e6 <cmd_error>)
    at eval.c:1309
#15 0x0000000000577da5 in command_loop_2 (ignore=0) at keyboard.c:1107
#16 0x00000000006205dc in internal_catch (tag=45840, func=0x577d7c <command_loop_2>, arg=0) at eval.c:1074
#17 0x0000000000577d47 in command_loop () at keyboard.c:1086
#18 0x00000000005772be in recursive_edit_1 () at keyboard.c:692
#19 0x00000000005774ca in Frecursive_edit () at keyboard.c:763
#20 0x0000000000575262 in main (argc=2, argv=0x7fffffffea98) at emacs.c:1606

Lisp Backtrace:
"delete-frame" (0xffffddb0)
"funcall-interactively" (0xffffdda8)
"call-interactively" (0xffffe0a0)
"command-execute" (0xffffe5e8)