1 files changed, 135 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/using-directive.cpp b/clang/test/SemaCXX/using-directive.cpp
new file mode 100644
index 0000000..22c6e14
--- /dev/null
+++ b/clang/test/SemaCXX/using-directive.cpp
@@ -0,0 +1,135 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+namespace A {
+  short i; // expected-note 2{{candidate found by name lookup is 'A::i'}}
+  namespace B {
+    long i; // expected-note{{candidate found by name lookup is 'A::B::i'}}
+    void f() {} // expected-note{{candidate function}}
+    int k;
+    namespace E {} // \
+      expected-note{{candidate found by name lookup is 'A::B::E'}}
+  }
+
+  namespace E {} // expected-note{{candidate found by name lookup is 'A::E'}}
+
+  namespace C {
+    using namespace B;
+    namespace E {} // \
+      expected-note{{candidate found by name lookup is 'A::C::E'}}
+  }
+
+  void f() {} // expected-note{{candidate function}}
+
+  class K1 {
+    void foo();
+  };
+
+  void local_i() {
+    char i;
+    using namespace A;
+    using namespace B;
+    int a[sizeof(i) == sizeof(char)? 1 : -1]; // okay
+  }
+  namespace B {
+    int j;
+  }
+
+  void ambig_i() {
+    using namespace A;
+    using namespace A::B;
+    (void) i; // expected-error{{reference to 'i' is ambiguous}}
+    f(); // expected-error{{call to 'f' is ambiguous}}
+    (void) j; // okay
+    using namespace C;
+    (void) k; // okay
+    using namespace E; // expected-error{{reference to 'E' is ambiguous}}
+  }
+
+  struct K2 {}; // expected-note 2{{candidate found by name lookup is 'A::K2'}}
+}
+
+struct K2 {}; // expected-note 2{{candidate found by name lookup is 'K2'}}
+
+using namespace A;
+
+void K1::foo() {} // okay
+
+struct K2 *k2; // expected-error{{reference to 'K2' is ambiguous}}
+
+K2 *k3; // expected-error{{reference to 'K2' is ambiguous}}
+
+class X { // expected-note{{candidate found by name lookup is 'X'}}
+  // FIXME: produce a suitable error message for this
+  using namespace A; // expected-error{{not allowed}}
+};
+
+namespace N {
+  struct K2;
+  struct K2 { };
+}
+
+namespace Ni {
+ int i(); // expected-note{{candidate found by name lookup is 'Ni::i'}}
+}
+
+namespace NiTest {
+ using namespace A;
+ using namespace Ni;
+
+ int test() {
+   return i; // expected-error{{reference to 'i' is ambiguous}}
+ }
+}
+
+namespace OneTag {
+  struct X; // expected-note{{candidate found by name lookup is 'OneTag::X'}}
+}
+
+namespace OneFunction {
+  void X(); // expected-note{{candidate found by name lookup is 'OneFunction::X'}}
+}
+
+namespace TwoTag {
+  struct X; // expected-note{{candidate found by name lookup is 'TwoTag::X'}}
+}
+
+namespace FuncHidesTagAmbiguity {
+  using namespace OneTag;
+  using namespace OneFunction;
+  using namespace TwoTag;
+
+  void test() {
+    (void)X(); // expected-error{{reference to 'X' is ambiguous}}
+  }
+}
+
+// PR5479
+namespace Aliased {
+  void inAliased();
+}
+namespace Alias = Aliased;
+using namespace Alias;
+void testAlias() {
+  inAliased();
+}
+
+namespace N { void f2(int); }
+
+extern "C++" {
+  using namespace N;
+  void f3() { f2(1); }
+}
+
+void f4() { f2(1); }
+
+// PR7517
+using namespace std; // expected-warning{{using directive refers to implicitly-defined namespace 'std'}}
+using namespace ::std; // expected-warning{{using directive refers to implicitly-defined namespace 'std'}}
+
+namespace test1 {
+  namespace ns { typedef int test1; }
+  template <class T> using namespace ns; // expected-error {{cannot template a using directive}}
+
+  // Test that we recovered okay.
+  test1 x;
+}