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-rw-r--r--tests/test-fdopen.c49
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diff --git a/tests/test-fdopen.c b/tests/test-fdopen.c
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+/* Test opening a stream with a file descriptor.
+ Copyright (C) 2011-2015 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 <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fdopen, FILE *, (int, const char *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
+
+int
+main (void)
+{
+ /* Test behavior on failure. POSIX makes it hard to check for
+ failure, since the behavior is not well-defined on invalid file
+ descriptors, so try fdopen 1000 times and if that's not enough to
+ fail due to EMFILE, so be it. */
+
+ int i;
+ for (i = 0; i < 1000; i++)
+ {
+ errno = 0;
+ if (! fdopen (STDOUT_FILENO, "w"))
+ {
+ ASSERT (errno != 0);
+ break;
+ }
+ }
+
+ return 0;
+}