vendor/llvm/llvm-trunk-r300422

1 files changed, 3 insertions, 2 deletions

diff --git a/include/llvm/ADT/None.h b/include/llvm/ADT/None.h
index d69ec17c15f9..c7a99c61994e 100644
--- a/include/llvm/ADT/None.h
+++ b/include/llvm/ADT/None.h
@@ -19,8 +19,9 @@
 namespace llvm {
 /// \brief A simple null object to allow implicit construction of Optional<T>
 /// and similar types without having to spell out the specialization's name.
-enum class NoneType { None };
-const NoneType None = None;
+// (constant value 1 in an attempt to workaround MSVC build issue... )
+enum class NoneType { None = 1 };
+const NoneType None = NoneType::None;
 }
 
 #endif