annotate 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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1 /* code is all from loser.c and loser.el by Mly
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2
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3 Copyright (C) 2002 Richard Mlynarik <mly@pobox.com>
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4
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5 This is part of XEmacs
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6
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7 Compile this file. Run it in the background giving it a command line
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8 argument PORT which is a positive integer 1024 < PORT < 32768 (avoid the
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9 numbers assigned in /etc/services).
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10
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11 Then start up a fresh (you're going to crash) XEmacs. Execute the following
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12
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13 (defun lose (port)
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14 (interactive "nUrk: ")
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15 (require 'comint)
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16 (while t
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17 (condition-case e
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18 (let* ((name "*lose*")
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19 (b (get-buffer-create name)))
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20 (switch-to-buffer b)
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21 (comint-mode)
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22 (comint-exec b name (cons "127.0.0.1" port) nil '())
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23 (process-send-string (get-buffer-process b) "\377\373\001")
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24 (process-send-string (get-buffer-process b) "\377\373\001"))
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25 (error (message "URK: %s" e)) (sit-for 1))))
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26
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27 Then M-x lose RET PORT RET and you lose big (in XEmacs 21.1, anyway).
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28 Note: the error messages are proper functioning. What should eventually
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29 happen after a number of SIGPIPEs is that you get a SIGSEGV and life is
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30 bad and XEmacs is dead.
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31 */
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32
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33 #include <arpa/inet.h>
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34
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35 int
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36 main (int argc, char **argv)
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37 {
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38 struct sockaddr_in junk;
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39 int s;
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40
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41 memset (&junk, 0, sizeof (junk));
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42
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43 junk.sin_family = AF_INET;
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44 junk.sin_addr.s_addr = htonl (INADDR_ANY); /* un*x sucks */
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45 junk.sin_port = htons (atoi (argv[1])); /* un*x blows */
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46
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47 s = socket (PF_INET, SOCK_STREAM, 0);
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48
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49 bind (s, (struct sockaddr *)&junk, sizeof (junk));
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50
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51 listen (s, 1);
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52
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53 for (;;)
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54 {
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55 int loser = accept (s, NULL, 0);
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56 close (loser);
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57 }
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58 }
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59