1 files changed, 64 insertions, 0 deletions
diff --git a/posix/tst-nice.c b/posix/tst-nice.c
new file mode 100644
index 0000000000..d5833c33fc
--- /dev/null
+++ b/posix/tst-nice.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+
+/* Test that nice() does not incorrectly return 0.  */
+static int
+do_test (void)
+{
+  int ret, expected;
+  const int incr = 10;
+
+  /* Discover current nice value.  */
+  errno = 0;
+  ret = nice (0);
+  if (ret == -1 && errno != 0)
+    {
+      printf ("break: nice(%d) return: %d, errno: %d\n", 0, ret, errno);
+      return 1;
+    }
+  expected = ret + incr;
+
+  /* Nice ourselves up.  */
+  errno = 0;
+  ret = nice (incr);
+  if (ret == -1 && errno != 0)
+    {
+      printf ("break: nice(%d) return: %d, errno: %d\n", incr, ret, errno);
+      return 1;
+    }
+
+  /* Check for return value being zero when it shouldn't.  Cannot simply
+     check for expected value since nice values are capped at 2^n-1.  */
+  if (ret == 0 && ret != expected)
+    {
+      printf ("fail: retval (%d) of nice(%d) != %d\n", ret, incr, expected);
+      return 1;
+    }
+
+  printf ("pass: nice(%d) return: %d\n", incr, ret);
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"