bug#21337: 25.0.50; inotify error message

[Robert Pluim <rpluim@gmail.com>]

Eli Zaretskii <eliz@gnu.org> writes:

>>  '(dired-auto-revert-buffer (quote dired-directory-changed-p))
>>  '(global-auto-revert-mode t)
>>  '(global-auto-revert-non-file-buffers t)
>> 
>> although disabling those 3 makes no difference to the behaviour.
>
> Then I guess the next step is to set debug-on-error non-nil and show
> the backtrace, so that we see what Lisp code errors out.
>

I hadn't considered that, however it's not very enlightening:

Debugger entered--Lisp error: (file-notify-error "Error while trying to read file system events")

That error is coming from the inotify_callback function. From gdb the
c-backtrace is:

#0  inotify_callback (fd=16, _=<optimized out>) at inotify.c:139
#1  0x000000000059e3a0 in wait_reading_process_output (time_limit=<optimized out>, nsecs=<optimized out>, read_kbd=-1, 
    do_display=true, wait_for_cell=0, wait_proc=0x0, just_wait_proc=0) at process.c:5085
#2  0x0000000000422672 in sit_for (timeout=30, reading=112, display_option=0) at dispnew.c:5756
#3  0x00000000004fa6dd in read_char (commandflag=0, commandflag@entry=1, map=13674864, map@entry=99582755, prev_event=-11, 
    used_mouse_menu=0xfffffffffffffea8, used_mouse_menu@entry=0x7fffffffd7db, end_time=0xd0a990, end_time@entry=0x0)
    at keyboard.c:2786
#4  0x00000000004fb469 in read_key_sequence (keybuf=keybuf@entry=0x7fffffffd8b0, prompt=prompt@entry=0, 
    dont_downcase_last=dont_downcase_last@entry=false, can_return_switch_frame=can_return_switch_frame@entry=true, 
    fix_current_buffer=fix_current_buffer@entry=true, prevent_redisplay=prevent_redisplay@entry=false, bufsize=30) at keyboard.c:9188
#5  0x00000000004fd171 in command_loop_1 () at keyboard.c:1406
#6  0x000000000055fbd7 in internal_condition_case (bfun=bfun@entry=0x4fcf30 <command_loop_1>, handlers=handlers@entry=18912, 
    hfun=hfun@entry=0x4f3a30 <cmd_error>) at eval.c:1356
#7  0x00000000004ef00c in command_loop_2 (ignore=ignore@entry=0) at keyboard.c:1138
#8  0x000000000055fab3 in internal_catch (tag=tag@entry=45168, func=func@entry=0x4eeff0 <command_loop_2>, arg=arg@entry=0)
    at eval.c:1116
#9  0x00000000004eefc9 in command_loop () at keyboard.c:1117
#10 0x00000000004f363b in recursive_edit_1 () at keyboard.c:723
#11 0x00000000004f3960 in Frecursive_edit () at keyboard.c:794
#12 0x00000000004187d6 in main (argc=1, argv=0x7fffffffdc38) at emacs.c:1629

xbacktrace gives no output at all.

printf time?

Regards

Robert