X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-posix_spawn_file_actions_addopen.c;h=a4865ca97e0258a3f3c946faf34874981131383a;hb=3386f3988ce2ab14d65f59659d8f95bf4830ecb3;hp=600772547d624cf2cc5effe649ee057c545f297f;hpb=73c46e26886dc0e186054134b1ae8d3641d5b89e;p=gnulib.git

diff --git a/tests/test-posix_spawn_file_actions_addopen.c b/tests/test-posix_spawn_file_actions_addopen.c
index 600772547..a4865ca97 100644
--- a/tests/test-posix_spawn_file_actions_addopen.c
+++ b/tests/test-posix_spawn_file_actions_addopen.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_addopen() function.
-   Copyright (C) 2011 Free Software Foundation, Inc.
+   Copyright (C) 2011-2013 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
@@ -25,9 +25,25 @@ SIGNATURE_CHECK (posix_spawn_file_actions_addopen, int,
 
 #include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
+#include <unistd.h>
 
 #include "macros.h"
 
+/* Return a file descriptor that is too big to use.
+   Prefer the smallest such fd, except use OPEN_MAX if it is defined
+   and is greater than getdtablesize (), as that's how OS X works.  */
+static int
+big_fd (void)
+{
+  int fd = getdtablesize ();
+#ifdef OPEN_MAX
+  if (fd < OPEN_MAX)
+    fd = OPEN_MAX;
+#endif
+  return fd;
+}
+
 int
 main (void)
 {
@@ -43,8 +59,9 @@ main (void)
             == EBADF);
   }
   {
+    int bad_fd = big_fd ();
     errno = 0;
-    ASSERT (posix_spawn_file_actions_addopen (&actions, 10000000,
+    ASSERT (posix_spawn_file_actions_addopen (&actions, bad_fd,
                                               "foo", 0, O_RDONLY)
             == EBADF);
   }