X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-freopen.c;h=4b54d8d52888d6f795686da6e5c27d7f132b0435;hb=533101a268dc5015a140ff4695d8eeb04fbe57b6;hp=be30af104242a2d820e1681b08644a656c508b06;hpb=36bde9b7b3c5d8a41015ac2be74488b83d27ed41;p=gnulib.git

diff --git a/tests/test-freopen.c b/tests/test-freopen.c
index be30af104..4b54d8d52 100644
--- a/tests/test-freopen.c
+++ b/tests/test-freopen.c
@@ -1,10 +1,10 @@
 /* Test of opening a file stream.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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 2, or (at your option)
-   any later version.
+   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
@@ -12,31 +12,71 @@
    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, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
 #include <config.h>
 
 #include <stdio.h>
-#include <stdlib.h>
-
-#define ASSERT(expr) \
-  do									     \
-    {									     \
-      if (!(expr))							     \
-        {								     \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          abort ();							     \
-        }								     \
-    }									     \
-  while (0)
+
+#include "signature.h"
+SIGNATURE_CHECK (freopen, FILE *, (char const *, char const *, FILE *));
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "macros.h"
 
 int
 main ()
 {
+  const char *filename = "test-freopen.txt";
+
   ASSERT (freopen ("/dev/null", "r", stdin) != NULL);
 
+#if 0 /* freopen (NULL, ...) is unsupported on most platforms.  */
+  /* Test that freopen() sets errno if someone else closes the stream
+     fd behind the back of stdio.  */
+  {
+    FILE *fp = fopen (filename, "w+");
+    ASSERT (fp != NULL);
+    ASSERT (close (fileno (fp)) == 0);
+    errno = 0;
+    ASSERT (freopen (NULL, "r", fp) == NULL);
+    perror("freopen");
+    ASSERT (errno == EBADF);
+    fclose (fp);
+  }
+
+  /* Test that freopen() sets errno if the stream was constructed with
+     an invalid file descriptor.  */
+  {
+    FILE *fp = fdopen (-1, "w+");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (freopen (NULL, "r", fp) == NULL);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+  {
+    FILE *fp;
+    close (99);
+    fp = fdopen (99, "w+");
+    if (fp != NULL)
+      {
+        errno = 0;
+        ASSERT (freopen (NULL, "r", fp) == NULL);
+        ASSERT (errno == EBADF);
+        fclose (fp);
+      }
+  }
+#endif
+
+  /* Clean up.  */
+  unlink (filename);
+
   return 0;
 }