Check that the namespace alias doesn't conflict with a previous declaration in this scope.
llvm-svn: 67921
diff --git a/clang/test/SemaCXX/namespace-alias.cpp b/clang/test/SemaCXX/namespace-alias.cpp
new file mode 100644
index 0000000..7458930
--- /dev/null
+++ b/clang/test/SemaCXX/namespace-alias.cpp
@@ -0,0 +1,11 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+
+namespace N { };
+
+namespace A = N;
+
+int B; // expected-note {{previous definition is here}}
+namespace B = N; // expected-error {{redefinition of 'B' as different kind of symbol}}
+
+namespace C { } // expected-note {{previous definition is here}}
+namespace C = N; // expected-error {{redefinition of 'C'}}