X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-posix_spawn_file_actions_addclose.c;h=c6790dd398642dc86e8ab8ca8bf5b89dcf0c19cf;hb=1276a2c5f24c0c932426aca9c899fa524d2443f2;hp=ae149246ce10325a1711a8cb7bb73b336d15bbbc;hpb=9fc81090f6c5590bd1b0e0fa5087577a2ee43a3e;p=gnulib.git

diff --git a/tests/test-posix_spawn_file_actions_addclose.c b/tests/test-posix_spawn_file_actions_addclose.c
index ae149246c..c6790dd39 100644
--- a/tests/test-posix_spawn_file_actions_addclose.c
+++ b/tests/test-posix_spawn_file_actions_addclose.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_addclose() function.
-   Copyright (C) 2011-2013 Free Software Foundation, Inc.
+   Copyright (C) 2011-2014 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
@@ -23,9 +23,25 @@ SIGNATURE_CHECK (posix_spawn_file_actions_addclose, int,
                  (posix_spawn_file_actions_t *, int));
 
 #include <errno.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)
 {
@@ -39,8 +55,9 @@ main (void)
     ASSERT (posix_spawn_file_actions_addclose (&actions, -1) == EBADF);
   }
   {
+    int bad_fd = big_fd ();
     errno = 0;
-    ASSERT (posix_spawn_file_actions_addclose (&actions, 10000000) == EBADF);
+    ASSERT (posix_spawn_file_actions_addclose (&actions, bad_fd) == EBADF);
   }
 
   return 0;