Mercurial > hg > octave-shane > gnulib-hg
annotate tests/test-sigpipe.c @ 17632:86af85d364e1 default tip
unistd: port readlink to Mac OS X 10.3.9
* lib/unistd.in.h (_GL_INCLUDING_UNISTD_H): New macro, to work
around self-include problem in Mac OS X 10.3.9 when combined with
readlink module. Problem reported by Klaus Zietler in
<http://bugs.gnu.org/16825>.
| author | Paul Eggert <eggert@penguin.cs.ucla.edu> |
|---|---|
| date | Tue, 25 Feb 2014 11:16:27 -0800 (2014-02-25) |
| parents | 344018b6e5d7 |
| children |
| rev | line source |
|---|---|
| 10485 | 1 /* Test of SIGPIPE handling. |
| 17587 | 2 Copyright (C) 2008-2014 Free Software Foundation, Inc. |
| 10485 | 3 |
| 4 This program is free software; you can redistribute it and/or modify | |
| 5 it under the terms of the GNU General Public License as published by | |
| 6 the Free Software Foundation; either version 3, or (at your option) | |
| 7 any later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
|
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15 along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
| 10485 | 16 |
| 17 #include <config.h> | |
| 18 | |
| 19 #include <signal.h> | |
| 20 | |
| 21 /* Check that SIGPIPE is defined. */ | |
| 22 int s = SIGPIPE; | |
| 23 | |
| 24 #include <errno.h> | |
| 25 #include <stdio.h> | |
| 26 #include <stdlib.h> | |
| 27 #include <unistd.h> | |
| 28 | |
| 29 static void | |
| 30 handler (int sig) | |
| 31 { | |
| 32 exit (0); | |
| 33 } | |
| 34 | |
| 35 int | |
| 36 main (int argc, char **argv) | |
| 37 { | |
| 38 char mode = argv[1][0]; | |
| 39 | |
| 40 switch (mode) | |
| 41 { | |
| 42 case 'A': signal (SIGPIPE, SIG_DFL); break; | |
| 43 case 'B': signal (SIGPIPE, SIG_IGN); break; | |
| 44 case 'C': signal (SIGPIPE, handler); break; | |
| 45 } | |
| 46 | |
| 47 /* Produce infinite output. Since it is piped into "head -1", the writes | |
| 48 must ultimately fail. */ | |
| 49 for (;;) | |
| 50 { | |
| 51 char c[2] = { 'y', '\n' }; | |
| 52 int ret = write (1, c, sizeof (c)); | |
| 53 if (ret <= 0) | |
|
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Bruno Haible <bruno@clisp.org>
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54 { |
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55 switch (mode) |
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56 { |
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57 case 'B': /* The write() call should have failed with EPIPE. */ |
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58 if (ret < 0 && errno == EPIPE) |
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59 exit (0); |
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60 /*FALLTHROUGH*/ |
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61 case 'A': /* The process should silently die. */ |
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62 case 'C': /* The handler should have been called. */ |
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63 fprintf (stderr, "write() returned %d with error %d.\n", ret, errno); |
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64 exit (1); |
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65 } |
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66 } |
| 10485 | 67 } |
| 68 } |