Check in LLVM r95781.
diff --git a/test/CodeCompletion/nested-name-specifier.cpp b/test/CodeCompletion/nested-name-specifier.cpp
new file mode 100644
index 0000000..e09a14b
--- /dev/null
+++ b/test/CodeCompletion/nested-name-specifier.cpp
@@ -0,0 +1,17 @@
+namespace N {
+ struct A { };
+ namespace M {
+ struct C { };
+ };
+}
+
+namespace N {
+ struct B { };
+}
+
+N::
+// RUN: %clang_cc1 -fsyntax-only -code-completion-at=%s:12:4 %s -o - | FileCheck -check-prefix=CC1 %s
+// CHECK-CC1: A
+// CHECK-CC1: B
+// CHECK-CC1: M
+