X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-freopen.c;h=4b54d8d52888d6f795686da6e5c27d7f132b0435;hb=23eecb48e39afd0d267d64d40ba6bf97aa865e13;hp=bdb5de0fe9927ca4d2cfc50b4d7dc0ec4de7a63a;hpb=89ae4589dd58d12e7cbcf0e92c1d828c1e430f97;p=gnulib.git

diff --git a/tests/test-freopen.c b/tests/test-freopen.c
index bdb5de0fe..4b54d8d52 100644
--- a/tests/test-freopen.c
+++ b/tests/test-freopen.c
@@ -1,5 +1,5 @@
 /* Test of opening a file stream.
-   Copyright (C) 2007-2009 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 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
@@ -23,24 +23,60 @@
 #include "signature.h"
 SIGNATURE_CHECK (freopen, FILE *, (char const *, char const *, FILE *));
 
-#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
 
-#define ASSERT(expr) \
-  do                                                                         \
-    {                                                                        \
-      if (!(expr))                                                           \
-        {                                                                    \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          fflush (stderr);                                                   \
-          abort ();                                                          \
-        }                                                                    \
-    }                                                                        \
-  while (0)
+#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;
 }