1 files changed, 18 insertions, 0 deletions
diff --git a/src/variant.cpp b/src/variant.cpp
new file mode 100644
index 000000000000..5bb508c3f467
--- /dev/null
+++ b/src/variant.cpp
@@ -0,0 +1,18 @@
+//===------------------------ variant.cpp ---------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+#include "variant"
+
+namespace std {
+
+const char* bad_variant_access::what() const noexcept {
+  return "bad_variant_access";
+}
+
+}  // namespace std