bug#13655: 23.2; sit-for doesn't return on input in other X displays

[Peter Szilagyi]

Evaluate (sit-for 60) in a frame created on one display (D1).  Switch to
a frame on another display (D2) without sending any input events to D1.
(In our case, this was typically a frame on the same X terminal, but
forwarded over a different SSH connection, so with a different DISPLAY
setting on the Emacs host.  This is also the most convenient repro; just
"ssh -X localhost" and "emacsclient -n -c" to get a frame with a
different DISPLAY.)

Sorry, Emacs didn't crash.  Thanks!

We were also able to see this in Emacs 24.2.

In GNU Emacs 23.2.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.18.9)
 of 2012-05-01 on nyc-qws-079.delacy.com
Windowing system distributor `CentOS', version 11.0.11006000
configured using `configure  '--build=x86_64-unknown-linux-gnu' 
'--host=x86_64-unknown-linux-gnu' '--target=x86_64-redhat-linux-gnu' 
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' 
'--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' 
'--includedir=/usr/include' '--libdir=/usr/lib64' '--libexecdir=/usr/libexec' 
'--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' 
'--infodir=/usr/share/info' '--with-dbus' '--with-gif' '--with-jpeg' 
'--with-png' '--with-rsvg' '--with-tiff' '--with-xft' '--with-xpm' 
'--with-x-toolkit=gtk' 'build_alias=x86_64-unknown-linux-gnu' 
'host_alias=x86_64-unknown-linux-gnu' 'target_alias=x86_64-redhat-linux-gnu' 
'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic''

Important settings:
  value of $LC_ALL: C
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.utf8
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Shell

Minor modes in effect:
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  iswitchb-mode: t
  show-paren-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n
C-n C-n C-n C-x 0 M-> M-< C-x C-s C-s c f l a g s C-s
C-s C-s C-s C-a C-x C-s C-c C-l C-c C-r C-x o M-> M-v
M-v M-v M-v M-< C-n C-n C-n C-n C-n C-n C-n C-n C-n
C-n C-n C-n C-n C-n C-n C-n C-n C-v C-v C-v C-v C-v
C-v C-v C-v C-v C-v C-v C-v C-v C-v C-v C-v C-v C-v
C-v C-v C-v C-v C-v C-v C-v C-v C-v C-v C-v M-> C-r
c f l a g s C-r C-r C-r C-r C-r C-r C-r C-r C-r C-r
C-r C-r C-r C-r C-r C-r C-r M-> C-p C-p C-p C-p C-e
M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b
M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b
M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b M-b
M-b M-b C-a C-s - g C-s C-s C-s C-a C-s - f n o C-s
C-s M-> C-r C-r C-a M-f M-f M-f M-f M-f M-f M-f M-f
M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f
M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f M-f C-e
C-f M-> M-v M-v M-v M-v M-v M-v M-v M-v M-> C-x k C-x
k C-f C-f C-x o M-> M-< C-x k C-x 0 C-x C-f <M-backspace>
<M-backspace> O M <tab> r <tab> <return> C-s w i t
h - f p C-p C-f C-e C-f C-e C-f C-e C-f C-f C-x C-s
C-x k M-> M-x r e p o r t - e m <tab> <return> C-g
M-x r e p o r t - e <tab> <return>

Recent messages:
Mark saved where search started
Mark set [2 times]
forward-char
call-interactively: End of buffer
forward-char
call-interactively: End of buffer
Mark set [2 times]
Mark saved where search started
(No changes need to be saved)
Mark set
Quit

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/usr/share/emacs/site-lisp/site-start.d/systemc-mode
/usr/share/emacs/site-lisp/verilog-mode hides 
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-install
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-compat
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-src
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-xoxo
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-rmail
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-ascii
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-archive
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/j/office/app/emacs/dev/.sink-2013-02-04_19-11-43.777324/jane-elisp/elisp/contrib/org/lisp/org-latex
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Features:
(shadow sort message idna ecomplete rfc822 mml mml-sec password-cache
mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045
qp ietf-drums mailabbrev nnheader gnus-util netrc mm-util mail-prsvr
gmm-utils mailheader canlock sha1 hex-util hashcash mail-utils emacsbug
conf-mode scheme novice vc-rcs cus-edit cus-start cus-load pp mail-extr
dabbrev make-mode warnings vc vc-dispatcher newcomment executable tabify
man apropos multi-isearch help-mode view log-view wid-edit pcvs-util
vc-hg flyspell ispell shell edit-server ffap jane-defaults smerge-mode
diff-mode uniquify filladapt smooth-scrolling advice advice-preload
saveplace iswitchb grep dired-x dired-aux dired ansi-color jane-common
whitespace info paren markdown-mode edmacro kmacro noutline outline
omake omake-test omake-interface omake-setup omake-ping time-date
omake-ocaml omake-project-buffer omake-model omake-version omake-result
omake-ring omake-filter omake-server core-log omake-project omake-env
omake-status omake-failure omake-window omake-error omake-file
autorevert omake-timer omake-progress omake-spinner omake-id
omake-inotify omake-path omake-util omake-themes omake-dark-theme
omake-light-theme omake-faces omake-custom omake-lib help-fns sendmail
jane-cr pa_ounit-tuareg jane-ocaml ocamlspot easy-mmode caml tuareg
speedbar sb-image ezimage dframe assoc skeleton regexp-opt derived
caml-help caml-types caml-emacs easymenu compile comint ring
jane-micro-features server jane-util core core-filename core-shell
core-string thingatpt core-hashtbl core-list core-buffer core-util cl
cl-19 jane-deprecated tooltip ediff-hook vc-hooks lisp-float-type mwheel
x-win x-dnd font-setting tool-bar dnd fontset image fringe lisp-mode
register page menu-bar rfn-eshadow timer select scroll-bar mldrag 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
loaddefs button minibuffer faces cus-face files text-properties overlay
md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs)