X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-pwrite.c;h=909149ab57605ad52ef40a1c21cd375b9830872b;hb=c9f0960c2cd1acf9c29b27860589698ea54fa4ec;hp=073f6a336c286d13d8463caa003030e80cf562a8;hpb=ea1a2077de32da9837b495d589509f8269807dd1;p=gnulib.git

diff --git a/tests/test-pwrite.c b/tests/test-pwrite.c
index 073f6a336..909149ab5 100644
--- a/tests/test-pwrite.c
+++ b/tests/test-pwrite.c
@@ -1,5 +1,5 @@
 /* Test the pwrite function.
-   Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2009-2012 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
@@ -24,6 +24,7 @@ SIGNATURE_CHECK (pwrite, ssize_t, (int, const void *, size_t, off_t));
 #include <sys/types.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <string.h>
 
 #include "macros.h"
 
@@ -69,12 +70,26 @@ main (void)
   ASSERT (close (fd) == 0);
 
   {
-    char read_buf[N];
     fd = open (file, O_RDONLY);
     ASSERT (0 <= fd);
     ASSERT (read (fd, buf, N) == N);
     ASSERT (close (fd) == 0);
     ASSERT (strcmp ("W1W3W5W7W9",buf) == 0);
   }
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    char byte = 'x';
+    errno = 0;
+    ASSERT (pwrite (-1, &byte, 1, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    char byte = 'x';
+    errno = 0;
+    ASSERT (pwrite (99, &byte, 1, 0) == -1);
+    ASSERT (errno == EBADF);
+  }
+
   return 0;
 }