Simple test case for [basic.lookup.udir].

llvm-svn: 86674

clang/test/CXX/basic/basic.lookup/basic.lookup.udir/p1.cpp

@@ -0,0 +1,35 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+
+// When looking up a namespace-name in a using-directive or
+// namespace-alias-definition, only namespace names are considered.
+
+struct ns1 {};
+void ns2();
+int ns3 = 0;
+
+namespace ns0 {
+  namespace ns1 {
+    struct test0 {};
+  }
+  namespace ns2 {
+    struct test1 {};
+  }
+  namespace ns3 {
+    struct test2 {};
+  }
+}
+
+using namespace ns0;
+
+namespace test3 = ns1;
+namespace test4 = ns2;
+namespace test5 = ns3;
+
+using namespace ns1;
+using namespace ns2;
+using namespace ns3;
+
+test0 a;
+test1 b;
+test2 c;
+