[patch] fix libstdc++/59680

[Jonathan Wakely]

        PR libstdc++/59680
        * src/c++11/thread.cc (__sleep_for): Fix call to ::sleep.

Tested x86_64-linux, and tested again with a hacked c++config.h to use
::sleep(), committed to trunk.

commit 3de5274663e0214b8c5335e99ef85f325f709840
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Thu Jan 9 14:33:20 2014 +0000

        PR libstdc++/59680
        * src/c++11/thread.cc (__sleep_for): Fix call to ::sleep.

diff --git a/libstdc++-v3/src/c++11/thread.cc b/libstdc++-v3/src/c++11/thread.cc
index d7c3fb1..49aacb5 100644
--- a/libstdc++-v3/src/c++11/thread.cc
+++ b/libstdc++-v3/src/c++11/thread.cc
@@ -183,7 +183,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
         ::usleep(__us);
       }
 # else
-    ::sleep(__s.count() + (__ns >= 1000000));
+    ::sleep(__s.count() + (__ns.count() >= 1000000));
 # endif
 #elif defined(_GLIBCXX_HAVE_WIN32_SLEEP)
     unsigned long ms = __ns.count() / 1000000;