libcxx initial import

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/language.support/support.exception/uncaught/uncaught_exception.pass.cpp b/test/language.support/support.exception/uncaught/uncaught_exception.pass.cpp
new file mode 100644
index 0000000..33ee877
--- /dev/null
+++ b/test/language.support/support.exception/uncaught/uncaught_exception.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// test uncaught_exception
+
+#include <exception>
+#include <cassert>
+
+struct A
+{
+    ~A()
+    {
+        assert(std::uncaught_exception());
+    }
+};
+
+int main()
+{
+    try
+    {
+        A a;
+        assert(!std::uncaught_exception());
+        throw 1;
+    }
+    catch (...)
+    {
+        assert(!std::uncaught_exception());
+    }
+    assert(!std::uncaught_exception());
+}