Mercurial > hg > xemacs-beta
view tests/sigpipe.c @ 4502:8748a3f7ceb4
Handle varalias chains, custom variables in #'user-variable-p.
src/ChangeLog addition:
2008-08-23 Aidan Kehoe <kehoea@parhasard.net>
* eval.c (Fuser_variable_p): Moved to symbols.c
* symbols.c (Fcustom_variable_p): Moved here from custom.el.
(user_variable_alias_check_fun): Mapper function used in
`user-variable-p'.
(Fuser_variable_p): Moved here from eval.c, to allow it to examine
the variable alias chain. Expanded to check each entry in the
variable alias chain for signs of being a user variable;
documentation updated, noting the differences between GNU's
behaviour and ours (ours is a little more sensible)
(map_varalias_chain): New.
Given a C function, call it at least once for each symbol in a
symbol's varalias chain, signalling an error if there's a cycle,
and returning immediately if the function returns something other
than Qzero.
(Fdefvaralias): Correct the use of the word "alias" in the
docstring and in the argument name. Motivate this in a
comment. Add support for a DOCSTRING argument, something GNU has
too, and document this
* gc.c (vars_of_gc): Start the docstring of
`garbage-collection-messages' with an asterisk, to indicate that
it's a user variable.
lisp/ChangeLog addition:
2008-08-23 Aidan Kehoe <kehoea@parhasard.net>
* custom.el: Move #'custom-variable-p to C, since it's now called
from #'user-variable-p.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Sat, 23 Aug 2008 16:38:51 +0200 |
parents | 3f6adebda25c |
children | 679041362cd4 |
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/* code is all from loser.c and loser.el by Mly Copyright (C) 2002 Richard Mlynarik <mly@pobox.com> This is part of XEmacs Compile this file. Run it in the background giving it a command line argument PORT which is a positive integer 1024 < PORT < 32768 (avoid the numbers assigned in /etc/services). Then start up a fresh (you're going to crash) XEmacs. Execute the following (defun lose (port) (interactive "nUrk: ") (require 'comint) (while t (condition-case e (let* ((name "*lose*") (b (get-buffer-create name))) (switch-to-buffer b) (comint-mode) (comint-exec b name (cons "127.0.0.1" port) nil '()) (process-send-string (get-buffer-process b) "\377\373\001") (process-send-string (get-buffer-process b) "\377\373\001")) (error (message "URK: %s" e)) (sit-for 1)))) Then M-x lose RET PORT RET and you lose big (in XEmacs 21.1, anyway). Note: the error messages are proper functioning. What should eventually happen after a number of SIGPIPEs is that you get a SIGSEGV and life is bad and XEmacs is dead. */ #include <arpa/inet.h> int main (int argc, char **argv) { struct sockaddr_in junk; int s; memset (&junk, 0, sizeof (junk)); junk.sin_family = AF_INET; junk.sin_addr.s_addr = htonl (INADDR_ANY); /* un*x sucks */ junk.sin_port = htons (atoi (argv[1])); /* un*x blows */ s = socket (PF_INET, SOCK_STREAM, 0); bind (s, (struct sockaddr *)&junk, sizeof (junk)); listen (s, 1); for (;;) { int loser = accept (s, NULL, 0); close (loser); } }