1 files changed, 60 insertions, 0 deletions
diff --git a/clang/test/ASTMerge/namespace/Inputs/namespace2.cpp b/clang/test/ASTMerge/namespace/Inputs/namespace2.cpp
new file mode 100644
index 00000000000..f65057d1ca6
--- /dev/null
+++ b/clang/test/ASTMerge/namespace/Inputs/namespace2.cpp
@@ -0,0 +1,60 @@
+// Merge success
+namespace N1 {
+  extern int x0;
+}
+
+// Merge multiple namespaces
+namespace N2 {
+  extern int x;
+}
+namespace N2 {
+  extern float y;
+}
+
+// Merge namespace with conflict
+namespace N3 {
+  extern double z;
+}
+
+namespace Enclosing {
+namespace Nested {
+  const int z = 4;
+}
+}
+
+namespace ContainsInline {
+  inline namespace Inline {
+    const int z = 10;
+  }
+}
+
+namespace TestAliasName = Enclosing::Nested;
+// NOTE: There is no warning on this alias.
+namespace AliasWithSameName = Enclosing::Nested;
+
+namespace TestUsingDecls {
+
+namespace A {
+void foo();
+}
+namespace B {
+using A::foo; // <- a UsingDecl creating a UsingShadow
+}
+
+}// end namespace TestUsingDecls
+
+namespace TestUnresolvedTypenameAndValueDecls {
+
+template <class T> class Base;
+template <class T> class Derived : public Base<T> {
+public:
+  using typename Base<T>::foo;
+  using Base<T>::bar;
+  typedef typename Derived::foo NewUnresolvedUsingType;
+};
+
+} // end namespace TestUnresolvedTypenameAndValueDecls
+
+namespace TestUsingNamespace {
+  using namespace Enclosing;
+}