import of libc++ 6.0.0

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/libcxx/src/support/runtime/exception_libcxxabi.ipp b/lib/libcxx/src/support/runtime/exception_libcxxabi.ipp
new file mode 100644
index 00000000000..c3dcf1ec591
--- /dev/null
+++ b/lib/libcxx/src/support/runtime/exception_libcxxabi.ipp
@@ -0,0 +1,28 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPPABI_VERSION
+#error this header can only be used with libc++abi
+#endif
+
+namespace std {
+
+bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() _NOEXCEPT
+{
+# if _LIBCPPABI_VERSION > 1101
+    return __cxa_uncaught_exceptions();
+# else
+    return __cxa_uncaught_exception() ? 1 : 0;
+# endif
+}
+
+} // namespace std