Mercurial > gnulib
view tests/test-popen-safer.c @ 39186:c1c789fe74ad
spawn-pipe: Silence a clang warning.
Reported by Tim Rühsen <tim.ruehsen@gmx.de>.
* lib/spawn-pipe.c: Disable clang -Wconditional-uninitialized warnings
in this file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 15 Dec 2017 10:44:15 +0100 |
parents | a8586d5e30d2 |
children | 10eb9086bea0 |
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/* Test of opening a subcommand stream. Copyright (C) 2009-2017 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Eric Blake <ebb9@byu.net>, 2009. */ #include <config.h> /* Specification. */ #include "stdio--.h" /* Helpers. */ #include <sys/wait.h> #include <unistd.h> /* This test intentionally closes stderr. So, we arrange to have fd 10 (outside the range of interesting fd's during the test) set up to duplicate the original stderr. */ #define BACKUP_STDERR_FILENO 10 #define ASSERT_STREAM myerr #include "macros.h" static FILE *myerr; int main (int argc, char **argv) { FILE *fp; int status; /* We close fd 2 later, so save it in fd 10. */ if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL) return 2; ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); ASSERT (fclose (stdin) == 0); ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); ASSERT (fclose (stdout) == 0); ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); ASSERT (fclose (stderr) == 0); ASSERT (fp = popen ("exit 0", "r")); ASSERT (STDERR_FILENO < fileno (fp)); status = pclose (fp); ASSERT (WIFEXITED (status)); ASSERT (!WEXITSTATUS (status)); return 0; }