maint: update copyright

[gnulib.git] / tests / test-dup3.c

diff --git a/tests/test-dup3.c b/tests/test-dup3.c
index dc5c6c2..bb22196 100644 (file)
--- a/tests/test-dup3.c
+++ b/tests/test-dup3.c
@@ -1,5 +1,5 @@
 /* Test duplicating file descriptors.
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2014 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
@@ -29,7 +29,7 @@ SIGNATURE_CHECK (dup3, int, (int, int, int));
 #include <stdbool.h>
 
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-/* Get declarations of the Win32 API functions.  */
+/* Get declarations of the native Windows API functions.  */
 # define WIN32_LEAN_AND_MEAN
 # include <windows.h>
 /* Get _get_osfhandle.  */
@@ -44,7 +44,7 @@ static bool
 is_open (int fd)
 {
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-  /* On Win32, the initial state of unassigned standard file
+  /* On native Windows, the initial state of unassigned standard file
      descriptors is that they are open but point to an
      INVALID_HANDLE_VALUE, and there is no fcntl.  */
   return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
@@ -76,6 +76,7 @@ int
 main ()
 {
   int use_cloexec;
+  int bad_fd = getdtablesize ();
 
 #if O_CLOEXEC
   for (use_cloexec = 0; use_cloexec <= 1; use_cloexec++)
@@ -123,8 +124,17 @@ main ()
       errno = 0;
       ASSERT (dup3 (fd, -2, o_flags) == -1);
       ASSERT (errno == EBADF);
+      if (bad_fd > 256)
+        {
+          ASSERT (dup3 (fd, 255, 0) == 255);
+          ASSERT (dup3 (fd, 256, 0) == 256);
+          ASSERT (close (255) == 0);
+          ASSERT (close (256) == 0);
+        }
+      ASSERT (dup3 (fd, bad_fd - 1, 0) == bad_fd - 1);
+      ASSERT (close (bad_fd - 1) == 0);
       errno = 0;
-      ASSERT (dup3 (fd, 10000000, o_flags) == -1);
+      ASSERT (dup3 (fd, bad_fd, o_flags) == -1);
       ASSERT (errno == EBADF);
 
       /* Using dup3 can skip fds.  */