Hi, --text follows this line-- This bug report will be sent to the Bug-GNU-Emacs mailing list and the GNU bug tracker at debbugs.gnu.org. Please check that the From: line contains a valid email address. After a delay of up to one day, you should receive an acknowledgment at that address. Please write in English if possible, as the Emacs maintainers usually do not have translators for other languages. Please describe exactly what actions triggered the bug, and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': Running emacs as "emacs24 -Q emacs_crash.txt" crashes emacs when I press Ctrl+e/End twice on the first line. With "gdb emacs24" and "set args -Q emacs_crash.txt", I get stack trace bt full: #0 0x0000000000498aa0 in char_table_ref (table=, c=c@entry=4195722) at chartab.c:234 #1 0x00000000005a668e in composition_compute_stop_pos (cmp_it=cmp_it@entry=0x7fffffffd020, charpos=9, charpos@entry=8, bytepos=, bytepos@entry=16, endpos=, endpos@entry=9, string=12124434) at composite.c:1053 #2 0x000000000051bb1e in scan_for_column (endpos=endpos@entry=0x7fffffffd0e8, goalcol=goalcol@entry=0x7fffffffd0e0, prevcol=prevcol@entry=0x0) at indent.c:595 #3 0x000000000051c5f2 in current_column_1 () at indent.c:708 #4 current_column () at indent.c:338 #5 0x00000000005860ba in exec_byte_code (bytestr=12275717, vector=4195722, maxdepth=4611686018695757824, args_template=4611686018430533632, nargs=4611686018695757824, args=0x7fffffffd130) at bytecode.c:1544 #6 0x000000000054fa0f in funcall_lambda (fun=9556229, nargs=nargs@entry=3, arg_vector=arg_vector@entry=0x7fffffffd320) at eval.c:3010 #7 0x000000000054fd1b in Ffuncall (nargs=4, args=0x7fffffffd318) at eval.c:2839 #8 0x000000000058494b in exec_byte_code (bytestr=12275717, vector=4195722, maxdepth=4611686018695757824, args_template=4611686018430533632, nargs=4611686018695757824, args=0x7fffffffd310) at bytecode.c:900 #9 0x000000000054fa0f in funcall_lambda (fun=9555357, nargs=nargs@entry=2, arg_vector=arg_vector@entry=0x7fffffffd4f0) at eval.c:3010 #10 0x000000000054fd1b in Ffuncall (nargs=3, args=0x7fffffffd4e8) at eval.c:2839 #11 0x000000000058494b in exec_byte_code (bytestr=12275717, vector=4195722, maxdepth=4611686018695757824, args_template=4611686018430533632, nargs=4611686018695757824, args=0x7fffffffd4e0) at bytecode.c:900 #12 0x000000000054fa0f in funcall_lambda (fun=9557661, nargs=nargs@entry=1, arg_vector=arg_vector@entry=0x7fffffffd708) at eval.c:3010 #13 0x000000000054fd1b in Ffuncall (nargs=nargs@entry=2, args=args@entry=0x7fffffffd700) at eval.c:2839 #14 0x000000000054c4d8 in Fcall_interactively (function=, record_flag=, keys=) at callint.c:852 #15 0x000000000054fe8c in Ffuncall (nargs=nargs@entry=4, args=args@entry=0x7fffffffd8c0) at eval.c:2785 #16 0x00000000005517e4 in call3 (fn=, arg1=, arg2=, arg3=) at eval.c:2603 #17 0x00000000004df61d in Fcommand_execute (cmd=, record_flag=, keys=, special=) at keyboard.c:10241 #18 0x00000000004ebec9 in command_loop_1 () at keyboard.c:1587 #19 0x000000000054e3e3 in internal_condition_case (bfun=bfun@entry=0x4ebb30 , handlers=12176114, hfun=hfun@entry=0x4e20f0 ) at eval.c:1289 #20 0x00000000004dd3ce in command_loop_2 (ignore=ignore@entry=12124434) at keyboard.c:1168 #21 0x000000000054e2be in internal_catch (tag=, func=func@entry=0x4dd3b0 , arg=12124434) at eval.c:1060 #22 0x00000000004e1c17 in command_loop () at keyboard.c:1147 #23 recursive_edit_1 () at keyboard.c:779 #24 0x00000000004e1f14 in Frecursive_edit () at keyboard.c:843 #25 0x00000000004171d5 in main (argc=, argv=0x7fffffffded8) at emacs.c:1528 (gdb) bt full #0 0x0000000000498aa0 in char_table_ref (table=, c=c@entry=4195722) at chartab.c:234 tbl = 0xbb5000 val = 4611686018429485125 #1 0x00000000005a668e in composition_compute_stop_pos (cmp_it=cmp_it@entry=0x7fffffffd020, charpos=9, charpos@entry=8, bytepos=, bytepos@entry=16, endpos=, endpos@entry=9, string=12124434) at composite.c:1053 start = 8 end = 40 c = 4195722 prop = -4022797923440058112 val = #2 0x000000000051bb1e in scan_for_column (endpos=endpos@entry=0x7fffffffd0e8, goalcol=goalcol@entry=0x7fffffffd0e0, prevcol=prevcol@entry=0x0) at indent.c:595 c = ctl_arrow = true dp = 0x0 multibyte = true cmp_it = {stop_pos = 9, id = -1, ch = -2, rule_idx = 0, lookback = 0, nglyphs = 2, reversed_p = false, charpos = 7, nchars = 1, nbytes = 3, from = 0, to = 2, width = 1} window = w = 0x119d0a0 col = 10 prev_col = 9 goal = 2305843009213693951 end = 9 scan = 8 scan_byte = 16 next_boundary = 11 #3 0x000000000051c5f2 in current_column_1 () at indent.c:708 col = 2305843009213693951 opoint = 9 #4 current_column () at indent.c:338 col = ptr = stop = tab_seen = post_tab = c = ctl_arrow = true dp = #5 0x00000000005860ba in exec_byte_code (bytestr=12275717, vector=4195722, maxdepth=4611686018695757824, args_template=4611686018430533632, nargs=4611686018695757824, args=0x7fffffffd130) at bytecode.c:1544 targets = {0x584a68 , 0x586a42 , 0x586ae4 , 0x5866ba , 0x5849b2 , 0x5849b2 , 0x5866bf , 0x5866fc , 0x586670 , 0x586675 , 0x58667a , 0x586685 , 0x584842 , 0x584848 , 0x584aa2 , 0x586695 , 0x584c1e , 0x584c23 , 0x584c28 , 0x584c35 , 0x584894 , 0x584898 , 0x584c6a , 0x584c45 , 0x584cdf , 0x584ce4 , 0x584ce9 , 0x584cf5 , 0x5848f0 , 0x5848f0 , 0x584ca6 , 0x584cba , 0x584d3e , 0x584d43 , 0x584d48 , 0x584d55 , 0x584926 , 0x584930 , 0x584d05 , 0x584d19 , 0x584d9e , 0x584da3 , 0x584da8 , 0x584db5 , 0x58496b , 0x584970 , 0x584d65 , 0x584d79 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x5855bc , 0x585644 , 0x58567d , 0x5856b6 , 0x5856ef , 0x584b70 , 0x584bac , 0x585731 , 0x584b35 , 0x584be3 , 0x585764 , 0x58579b , 0x5857cb , 0x585811 , 0x585847 , 0x5858bf , 0x5858e8 , 0x58591f , 0x58595b , 0x585984 , 0x5859ad , 0x5859e4 , 0x585a1b , 0x585a52 , 0x585a8e , 0x585ac4 , 0x585afa , 0x585b72 , 0x585bac , 0x585be6 , 0x585c74 , 0x585cab , 0x585ce2 , 0x585d19 , 0x585d50 , 0x585d86 , 0x585db9 , 0x585def , 0x585e25 , ---Type to continue, or q to quit--- 0x585e5b , 0x585efe , 0x584a74 , 0x585f34 , 0x585f5d , 0x585fcc , 0x586002 , 0x586038 , 0x586061 , 0x58608b , 0x5860b5 , 0x5860e2 , 0x584a68 , 0x586112 , 0x586140 , 0x58616e , 0x58619c , 0x5861ca , 0x5861f8 , 0x584a74 , 0x584a68 , 0x586221 , 0x58624f , 0x586278 , 0x5862a1 , 0x5862d8 , 0x58630f , 0x586338 , 0x5863ef , 0x5865ab , 0x5865e2 , 0x586619 , 0x586647 , 0x584a68 , 0x584fbe , 0x584df1 , 0x584ab6 , 0x584e90 , 0x584f43 , 0x58512f , 0x58546c , 0x5854c0 , 0x584c7e , 0x585006 , 0x585034 , 0x585093 , 0x5850c1 , 0x5850fd , 0x5854e0 , 0x58551c , 0x58555e , 0x584dc5 , 0x586426 , 0x586462 , 0x58648b , 0x5864b4 , 0x5864dd , 0x586506 , 0x58653d , 0x586574 , 0x58684f , 0x586886 , 0x5868cb , 0x586902 , 0x586939 , 0x586962 , 0x586999 , 0x5869d0 , 0x586a09 , 0x586aae , 0x585e91 , 0x585ec7 , 0x586a47 , 0x586a7a , 0x584a68 , 0x5851e0 , 0x585265 , 0x5852cd , 0x585365 , 0x5853d4 , 0x58587d , 0x585b30 , 0x585f8a , 0x58674d , 0x58678a , 0x584a68 , 0x584a68 , 0x5867db , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x586823 } vectorp = 0x91d1a0 stack = {pc = 0xa98fd7 "\024\016\033\250\204\206", byte_string = 9556337, byte_string_start = 0xa98fa5 "\306`\b\031\032\033\f:\203\021", constants = 9556373, next = 0x7fffffffd370} result = 4611686018429485125 #6 0x000000000054fa0f in funcall_lambda (fun=9556229, nargs=nargs@entry=3, arg_vector=arg_vector@entry=0x7fffffffd320) at eval.c:3010 val = syms_left = 12124434 next = lexenv = 12124434 count = 14 i = optional = rest = #7 0x000000000054fd1b in Ffuncall (nargs=4, args=0x7fffffffd318) at eval.c:2839 fun = original_fun = 16153362 funcar = numargs = 3 lisp_numargs = val = backtrace = {next = 0x7fffffffd470, function = 16153362, args = 0x7fffffffd320, nargs = 3, debug_on_exit = 0} internal_args = i = #8 0x000000000058494b in exec_byte_code (bytestr=12275717, vector=4195722, maxdepth=4611686018695757824, args_template=4611686018430533632, nargs=4611686018695757824, args=0x7fffffffd310) at bytecode.c:900 targets = {0x584a68 , 0x586a42 , 0x586ae4 , 0x5866ba , 0x5849b2 , 0x5849b2 , 0x5866bf , 0x5866fc , 0x586670 , 0x586675 , 0x58667a , 0x586685 , 0x584842 , 0x584848 , 0x584aa2 , 0x586695 , 0x584c1e , 0x584c23 , 0x584c28 , 0x584c35 , 0x584894 , 0x584898 , 0x584c6a , 0x584c45 , 0x584cdf , 0x584ce4 , 0x584ce9 , 0x584cf5 , 0x5848f0 , 0x5848f0 , 0x584ca6 , 0x584cba , 0x584d3e , 0x584d43 , 0x584d48 , 0x584d55 , 0x584926 , 0x584930 , 0x584d05 , 0x584d19 , 0x584d9e , 0x584da3 , 0x584da8 , 0x584db5 , 0x58496b , 0x584970 , 0x584d65 , 0x584d79 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x5855bc , 0x585644 , 0x58567d , 0x5856b6 , 0x5856ef , 0x584b70 , 0x584bac , 0x585731 , 0x584b35 , 0x584be3 , 0x585764 , 0x58579b , 0x5857cb , 0x585811 , 0x585847 , 0x5858bf , 0x5858e8 , 0x58591f , 0x58595b , 0x585984 , 0x5859ad , ---Type to continue, or q to quit--- 0x5859e4 , 0x585a1b , 0x585a52 , 0x585a8e , 0x585ac4 , 0x585afa , 0x585b72 , 0x585bac , 0x585be6 , 0x585c74 , 0x585cab , 0x585ce2 , 0x585d19 , 0x585d50 , 0x585d86 , 0x585db9 , 0x585def , 0x585e25 , 0x585e5b , 0x585efe , 0x584a74 , 0x585f34 , 0x585f5d , 0x585fcc , 0x586002 , 0x586038 , 0x586061 , 0x58608b , 0x5860b5 , 0x5860e2 , 0x584a68 , 0x586112 , 0x586140 , 0x58616e , 0x58619c , 0x5861ca , 0x5861f8 , 0x584a74 , 0x584a68 , 0x586221 , 0x58624f , 0x586278 , 0x5862a1 , 0x5862d8 , 0x58630f , 0x586338 , 0x5863ef , 0x5865ab , 0x5865e2 , 0x586619 , 0x586647 , 0x584a68 , 0x584fbe , 0x584df1 , 0x584ab6 , 0x584e90 , 0x584f43 , 0x58512f , 0x58546c , 0x5854c0 , 0x584c7e , 0x585006 , 0x585034 , 0x585093 , 0x5850c1 , 0x5850fd , 0x5854e0 , 0x58551c , 0x58555e , 0x584dc5 , 0x586426 , 0x586462 , 0x58648b , 0x5864b4 , 0x5864dd , 0x586506 , 0x58653d , 0x586574 , 0x58684f , 0x586886 , 0x5868cb , 0x586902 , 0x586939 , 0x586962 , 0x586999 , 0x5869d0 , 0x586a09 , 0x586aae , 0x585e91 , 0x585ec7 , 0x586a47 , 0x586a7a , 0x584a68 , 0x5851e0 , 0x585265 , 0x5852cd , 0x585365 , 0x5853d4 , 0x58587d , 0x585b30 , 0x585f8a , 0x58674d , 0x58678a , 0x584a68 , 0x584a68 , 0x5867db , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x586823 } vectorp = 0x91ce38 stack = {pc = 0xa99297 "\207", byte_string = 9555465, byte_string_start = 0xa99240 "\b\203\a", constants = 9555501, next = 0x7fffffffd540} result = 4611686018429485125 #9 0x000000000054fa0f in funcall_lambda (fun=9555357, nargs=nargs@entry=2, arg_vector=arg_vector@entry=0x7fffffffd4f0) at eval.c:3010 val = syms_left = 12124434 next = lexenv = 12124434 count = 10 i = optional = rest = #10 0x000000000054fd1b in Ffuncall (nargs=3, args=0x7fffffffd4e8) at eval.c:2839 fun = original_fun = 16883650 funcar = numargs = 2 lisp_numargs = val = backtrace = {next = 0x7fffffffd640, function = 16883650, args = 0x7fffffffd4f0, nargs = 2, debug_on_exit = 0} internal_args = i = #11 0x000000000058494b in exec_byte_code (bytestr=12275717, vector=4195722, maxdepth=4611686018695757824, args_template=4611686018430533632, nargs=4611686018695757824, args=0x7fffffffd4e0) at bytecode.c:900 targets = {0x584a68 , 0x586a42 , 0x586ae4 , 0x5866ba , 0x5849b2 , 0x5849b2 , 0x5866bf , 0x5866fc , 0x586670 , 0x586675 , 0x58667a , 0x586685 , 0x584842 , 0x584848 , 0x584aa2 , 0x586695 , 0x584c1e , 0x584c23 , 0x584c28 , 0x584c35 , 0x584894 , 0x584898 , 0x584c6a , 0x584c45 , 0x584cdf , 0x584ce4 , 0x584ce9 , 0x584cf5 , 0x5848f0 , 0x5848f0 , 0x584ca6 , 0x584cba , 0x584d3e , 0x584d43 , 0x584d48 , 0x584d55 , 0x584926 , 0x584930 , 0x584d05 , 0x584d19 , 0x584d9e , 0x584da3 , 0x584da8 , 0x584db5 , 0x58496b , 0x584970 , 0x584d65 , 0x584d79 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x5855bc , 0x585644 , 0x58567d , 0x5856b6 , 0x5856ef , 0x584b70 , 0x584bac , 0x585731 , 0x584b35 , ---Type to continue, or q to quit--- 0x584be3 , 0x585764 , 0x58579b , 0x5857cb , 0x585811 , 0x585847 , 0x5858bf , 0x5858e8 , 0x58591f , 0x58595b , 0x585984 , 0x5859ad , 0x5859e4 , 0x585a1b , 0x585a52 , 0x585a8e , 0x585ac4 , 0x585afa , 0x585b72 , 0x585bac , 0x585be6 , 0x585c74 , 0x585cab , 0x585ce2 , 0x585d19 , 0x585d50 , 0x585d86 , 0x585db9 , 0x585def , 0x585e25 , 0x585e5b , 0x585efe , 0x584a74 , 0x585f34 , 0x585f5d , 0x585fcc , 0x586002 , 0x586038 , 0x586061 , 0x58608b , 0x5860b5 , 0x5860e2 , 0x584a68 , 0x586112 , 0x586140 , 0x58616e , 0x58619c , 0x5861ca , 0x5861f8 , 0x584a74 , 0x584a68 , 0x586221 , 0x58624f , 0x586278 , 0x5862a1 , 0x5862d8 , 0x58630f , 0x586338 , 0x5863ef , 0x5865ab , 0x5865e2 , 0x586619 , 0x586647 , 0x584a68 , 0x584fbe , 0x584df1 , 0x584ab6 , 0x584e90 , 0x584f43 , 0x58512f , 0x58546c , 0x5854c0 , 0x584c7e , 0x585006 , 0x585034 , 0x585093 , 0x5850c1 , 0x5850fd , 0x5854e0 , 0x58551c , 0x58555e , 0x584dc5 , 0x586426 , 0x586462 , 0x58648b , 0x5864b4 , 0x5864dd , 0x586506 , 0x58653d , 0x586574 , 0x58684f , 0x586886 , 0x5868cb , 0x586902 , 0x586939 , 0x586962 , 0x586999 , 0x5869d0 , 0x586a09 , 0x586aae , 0x585e91 , 0x585ec7 , 0x586a47 , 0x586a7a , 0x584a68 , 0x5851e0 , 0x585265 , 0x5852cd , 0x585365 , 0x5853d4 , 0x58587d , 0x585b30 , 0x585f8a , 0x58674d , 0x58678a , 0x584a68 , 0x584a68 , 0x5867db , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x584a68 , 0x586823 } vectorp = 0x91d708 stack = {pc = 0xa98dbf "\203:", byte_string = 9557721, byte_string_start = 0xa98da9 "\b\204\006", constants = 9557757, next = 0x0} result = 4611686018429485125 #12 0x000000000054fa0f in funcall_lambda (fun=9557661, nargs=nargs@entry=1, arg_vector=arg_vector@entry=0x7fffffffd708) at eval.c:3010 val = syms_left = 12124434 next = lexenv = 12124434 count = 5 i = optional = rest = #13 0x000000000054fd1b in Ffuncall (nargs=nargs@entry=2, args=args@entry=0x7fffffffd700) at eval.c:2839 fun = original_fun = 15508146 funcar = numargs = 1 lisp_numargs = val = backtrace = {next = 0x7fffffffd850, function = 15508146, args = 0x7fffffffd708, nargs = 1, debug_on_exit = 0} internal_args = i = #14 0x000000000054c4d8 in Fcall_interactively (function=, record_flag=, keys=) at callint.c:852 val = args = visargs = specs = filter_specs = teml = up_event = 12124434 enable = speccount = next_event = ---Type to continue, or q to quit--- prefix_arg = string = tem = varies = 0x7fffffffd6c0 "" i = nargs = mark = arg_from_tty = gcpro3 = gcpro4 = key_count = record_then_fail = save_this_command = save_last_command = save_this_original_command = save_real_this_command = #15 0x000000000054fe8c in Ffuncall (nargs=nargs@entry=4, args=args@entry=0x7fffffffd8c0) at eval.c:2785 fun = 11444141 original_fun = 12260850 funcar = numargs = 3 lisp_numargs = val = backtrace = {next = 0x0, function = 12260850, args = 0x7fffffffd8c8, nargs = 3, debug_on_exit = 0} internal_args = 0x7fffffffd8c8 i = #16 0x00000000005517e4 in call3 (fn=, arg1=, arg2=, arg3=) at eval.c:2603 ret_ungc_val = 4611686018429485125 gcpro1 = {next = , var = , nvars = 4} args = {12260850, 15508146, 12124434, 12124434} #17 0x00000000004df61d in Fcommand_execute (cmd=, record_flag=, keys=, special=) at keyboard.c:10241 final = tem = prefixarg = #18 0x00000000004ebec9 in command_loop_1 () at keyboard.c:1587 scount = 2 cmd = keybuf = {15454994, 5566962, 140737353876176, 2822930839, 38, 89, 140737353876176, 140737351927830, 140737246709568, 12124434, 0, 15837026, 140737488345264, 0, 140737488345760, 4239955, 0, 12242194, 12124434, 12124434, 4000, 4611686018695757824, 12124434, 5498110, 1, 64, 12351862, 5565296, 12124434, 4000} i = prev_modiff = 2 prev_buffer = 0x1762650 #19 0x000000000054e3e3 in internal_condition_case (bfun=bfun@entry=0x4ebb30 , handlers=12176114, hfun=hfun@entry=0x4e20f0 ) at eval.c:1289 val = c = {tag = 12124434, val = 12124434, next = 0x7fffffffdbf0, gcpro = 0x0, jmp = {{__jmpbuf = {1, -2195644069263322468, 12124434, 4000, 140737488346832, 0, 2195641993034322588, -2195641621456366948}, __mask_was_saved = 0, __saved_mask = {__val = {0, 1, 8550200, 0, 4000, 140737488346832, 0, 20179232, 140737351947607, 140733193388033, 0, 3488983867, 140737246685472, 1, 20179232, 12124434}}}}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0} h = {handler = 12176114, var = 12124434, chosen_clause = 140737488345776, tag = 0x7fffffffdaa0, next = 0x0} #20 0x00000000004dd3ce in command_loop_2 (ignore=ignore@entry=12124434) at keyboard.c:1168 val = 4611686018429485125 #21 0x000000000054e2be in internal_catch (tag=, func=func@entry=0x4dd3b0 , arg=12124434) at eval.c:1060 c = {tag = 12171954, val = 12124434, next = 0x0, gcpro = 0x0, jmp = {{__jmpbuf = {1, -2195644069263322468, 12124434, 4000, 140737488346832, 0, 2195641993086751388, -2195641621485989220}, __mask_was_saved = 0, __saved_mask = {__val = {0, 390842023936, 0, 0, 511101108334, 0, 140737488346287, 8658881, 5848894, 124, 6198275, 140737488346416, 140737488346424, 0, 140737488346416, 6198275}}}}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0} #22 0x00000000004e1c17 in command_loop () at keyboard.c:1147 ---Type to continue, or q to quit--- No locals. #23 recursive_edit_1 () at keyboard.c:779 count = 1 val = 20179232 #24 0x00000000004e1f14 in Frecursive_edit () at keyboard.c:843 count = 0 buffer = 12124434 #25 0x00000000004171d5 in main (argc=, argv=0x7fffffffded8) at emacs.c:1528 dummy = 0 stack_bottom_variable = -1 '\377' do_initial_setlocale = dumping = skip_args = 0 rlim = {rlim_cur = 8720000, rlim_max = 18446744073709551615} no_loadup = false junk = 0x0 dname_arg = 0x0 ch_to_dir = 0x1343010 "\220P4\001" xbacktrace does not exist on my system gdb. Cheers, Juha If Emacs crashed, and you have the Emacs process in the gdb debugger, please include the output from the following gdb commands: `bt full' and `xbacktrace'. For information about debugging Emacs, please read the file /usr/share/emacs/24.3/etc/DEBUG. In GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-07 on lamiak, modified by Debian Windowing system distributor `The X.Org Foundation', version 11.0.11501000 System Description: Ubuntu 14.04.1 LTS Configured using: `configure '--build' 'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp' '--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes' '--with-x-toolkit=gtk3' '--with-toolkit-scroll-bars' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro' 'CPPFLAGS=-D_FORTIFY_SOURCE=2'' Important settings: value of $LANG: en_GB.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Text Minor modes in effect: tooltip-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: M-x r e p o r Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. emacs_crash.txt has auto save data; consider M-x recover-this-file Loading vc-git...done byte-code: End of buffer [3 times] Making completion list... [2 times] Load-path shadows: None found. Features: (shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils help-mode easymenu vc-git time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)