Check in LLVM r95781.
diff --git a/test/CodeGenCXX/namespace-aliases.cpp b/test/CodeGenCXX/namespace-aliases.cpp
new file mode 100644
index 0000000..74b8eba
--- /dev/null
+++ b/test/CodeGenCXX/namespace-aliases.cpp
@@ -0,0 +1,3 @@
+// RUN: %clang_cc1 -emit-llvm-only %s
+namespace A { }
+namespace B = A;