Package: emacs;
Reported by: Leonardo Hernández <leohdz172 <at> proton.me>
Date: Sat, 20 May 2023 19:51:01 UTC
Severity: normal
Found in version 29.0.91
Message #29 received at 63614 <at> debbugs.gnu.org (full text, mbox):
From: Po Lu <luangruo <at> yahoo.com> To: Leonardo Hernández Hernández <leohdz172 <at> proton.me> Cc: 63614 <at> debbugs.gnu.org Subject: Re: bug#63614: 29.0.91; PGTK Emacs crashes after clearing the clipboard Date: Thu, 25 May 2023 14:13:38 +0800
Leonardo Hernández Hernández <leohdz172 <at> proton.me> writes:
> event = 0x55d8dac3bc20 <kbd_buffer+1088>
> copy = {kind = SELECTION_CLEAR_EVENT, dpyinfo = 0xdb87f650, requestor = 0x0, selection = 0x45, target = 0x0, property = 0x0, time = 0}
> moved_events = <optimized out>
> #10 process_special_events () at keyboard.c:4449
> event = 0x55d8dac3bc20 <kbd_buffer+1088>
> copy = {kind = SELECTION_CLEAR_EVENT, dpyinfo = 0xdb87f650, requestor = 0x0, selection = 0x45, target = 0x0, property = 0x0, time = 0}
> moved_events = <optimized out>
> #11 0x000055d8da521cbd in swallow_events (do_display=true) at keyboard.c:4489
> old_timers_run = <optimized out>
> #12 0x000055d8da63da7c in wait_reading_process_output
> (time_limit=<optimized out>, nsecs=<optimized out>, read_kbd=<optimized out>, do_display=<optimized out>, wait_for_cell=<optimized out>, wait_proc=<optimized out>, just_wait_proc=<optimized out>) at process.c:5781
> leave = false
> wrapped = <optimized out>
> process_skipped = <optimized out>
> channel_start = <optimized out>
> child_fd = <optimized out>
> channel = <optimized out>
> nfds = <optimized out>
> Available = {fds_bits = {16, 0 <repeats 15 times>}}
> Writeok = {fds_bits = {0 <repeats 16 times>}}
> check_write = true
> check_delay = <optimized out>
> no_avail = false
> xerrno = 11
> proc = <optimized out>
> timeout = {tv_sec = 0, tv_nsec = 0}
> end_time = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
> timer_delay = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
> got_output_end_time = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
> wait = <optimized out>
> got_some_output = <optimized out>
> prev_wait_proc_nbytes_read = <optimized out>
> retry_for_async = <optimized out>
> count = {bytes = <optimized out>}
> now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
> last_read_channel = -1
> #13 0x000055d8da41e3a0 in sit_for (timeout=<optimized out>, reading=<optimized out>, display_option=<optimized out>) at dispnew.c:6264
> sec = 30
> nsec = 0
> do_display = <optimized out>
> curbuf_eq_winbuf = true
> nbytes = <optimized out>
> #14 0x000055d8da52a5c5 in read_char (commandflag=1, map=0x55d8dbdab6d3, prev_event=0x0, used_mouse_menu=0x7ffffcfef4fb, end_time=0x0) at keyboard.c:2881
> delay_level = <optimized out>
> buffer_size = <optimized out>
> c = 0x0
> local_getcjmp = {{__jmpbuf = {94389871329920, -4940312681896898891, 1, 140582085818120, 0, 94389890508307, -4940312682234540363, -1207467647118897483}, __mask_was_saved = 0, __saved_mask = {__val = {94389865389056, 94389889840131, 586, 2, 94389865403823, 140737437954896, 40080, 140737437954784, 0, 0, 140582085818125, 0, 94389889840131, 0, 146, 147}}}}
> save_jump = {{__jmpbuf = {0, 0, 0, 0, 0, 0, 0, 0}, __mask_was_saved = 0, __saved_mask = {__val = {0 <repeats 16 times>}}}}
> tem = <optimized out>
> save = <optimized out>
> previous_echo_area_message = 0x0
> also_record = 0x0
> reread = false
> recorded = false
> polling_stopped_here = false
> orig_kboard = 0x55d8db7facb0
> #15 0x000055d8da6d84b7 in read_key_sequence.constprop.0
> (keybuf=<optimized out>, prevent_redisplay=false, fix_current_buffer=<optimized out>, can_return_switch_frame=<optimized out>, dont_downcase_last=<optimized out>, prompt=<optimized out>)
> at keyboard.c:10083
> interrupted_kboard = 0x55d8db7facb0
> key = <optimized out>
> used_mouse_menu = false
> echo_local_start = 0
> last_real_key_start = 0
> keys_local_start = 0
> new_binding = <optimized out>
> t = 0
> echo_start = 0
> keys_start = 0
> current_binding = 0x55d8dbdab6d3
> first_unbound = 31
> mock_input = 0
> used_mouse_menu_history = {false <repeats 30 times>}
> fkey = {parent = 0x55d8db691393, map = 0x55d8db691393, start = 0, end = 0}
> keytran = {parent = 0x7fdbd1c0897b, map = 0x7fdbd1c0897b, start = 0, end = 0}
> indec = {parent = 0x55d8db6913a3, map = 0x55d8db6913a3, start = 0, end = 0}
> shift_translated = <optimized out>
> delayed_switch_frame = <optimized out>
> original_uppercase = <optimized out>
> original_uppercase_position = <optimized out>
> dummyflag = false
> fake_prefixed_keys = 0x0
> first_event = 0x0
> second_event = <optimized out>
> #16 0x000055d8da51dc5a in command_loop_1 () at keyboard.c:1384
> cmd = <optimized out>
> keybuf = {0x5e, 0x55d8da5dc786 <eval_sub+1142>, 0x55d8db63e510, 0x55d8da63530c <exec_byte_code+508>, 0x0, 0x80, 0x0, 0x7fdbd190e738, 0x55d8da78c020 <main_thread.lto_priv>, 0x7fdbd1ce62b5, 0x55d8db6843c4, 0x0, 0x55d8da716314, 0x7fdbd6f01705, 0x53474e, 0x7fdbd5638400, 0x7ffffcfefaf0, 0xe90a45cb1b95ae00, 0x9510, 0x55d8da71cd60, 0x7ffffcfef7c0, 0x60, 0x55d8db6843c4, 0x0, 0x55d8da78c020 <main_thread.lto_priv>, 0x55d8da51b995 <top_level_2+725>, 0x55d8da716314, 0x7fdbd5638f12 <malloc+434>, 0x15, 0x30}
> i = <optimized out>
> prev_modiff = 31
> prev_buffer = 0x7fdbd1497708
> #17 0x000055d8da5d6b67 in internal_condition_case (bfun=0x55d8da51d990 <command_loop_1>, handlers=<optimized out>, hfun=0x55d8da51b3f0 <cmd_error>) at eval.c:1474
> val = <optimized out>
> c = 0x55d8db688350
> #18 0x000055d8da51b6ae in command_loop_2 (handlers=handlers <at> entry=0x90) at keyboard.c:1133
> val = <optimized out>
> #19 0x000055d8da5d6abc in internal_catch (tag=<optimized out>, func=0x55d8da51b680 <command_loop_2>, arg=0x90) at eval.c:1197
> val = <optimized out>
> c = 0x55d8db687de0
> #20 0x000055d8da51d479 in command_loop () at keyboard.c:1111
> #21 0x000055d8da70b9b0 in recursive_edit_1.isra.0 () at keyboard.c:720
> val = <optimized out>
> #22 0x000055d8da51d95c in Frecursive_edit () at keyboard.c:803
> buffer = <optimized out>
> #23 0x000055d8da411b9d in main (argc=<optimized out>, argv=0x7ffffcfefc08) at emacs.c:2529
> stack_bottom_variable = 0x0
> no_loadup = false
> junk = 0x0
> dname_arg = 0x0
> ch_to_dir = 0x0
> original_pwd = 0x0
> dump_mode = <optimized out>
> skip_args = 0
> temacs = 0x0
> attempt_load_pdump = <optimized out>
> only_version = false
> rlim = {rlim_cur = 10022912, rlim_max = 18446744073709551615}
> lc_all = <optimized out>
> sockfd = -1
> module_assertions = <optimized out>
> (gdb) frame 8
> #8 0x000055d8da6bd059 in pgtk_handle_selection_clear (event=<optimized out>) at pgtkselect.c:742
> 742 local_selection_data = LOCAL_SELECTION (selection_symbol, dpyinfo);
> (gdb) p *event
> value has been optimized out
> (gdb) frame 9
> #9 0x000055d8da520ab6 in pgtk_handle_selection_event (event=0x7ffffcfeea00) at pgtkselect.c:782
> 782 pgtk_handle_selection_clear (event);
> (gdb) p *event
> $1 = {kind = SELECTION_CLEAR_EVENT, dpyinfo = 0xdb87f650, requestor = 0x0, selection = 0x45, target = 0x0, property = 0x0, time = 0}
I suppose what this shows is that an invalid SELECTION_CLEAR_EVENT has
somehow found its way in to the keyboard buffer.
We need to narrow down the scope of the problem. If you comment out the
entirety of `process_special_events', does the crash still occur?
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