Add the clang library to the repo (with some of my changes, too).

1 files changed, 334 insertions, 0 deletions

diff --git a/clang/test/CXX/temp/temp.spec/temp.expl.spec/examples.cpp b/clang/test/CXX/temp/temp.spec/temp.expl.spec/examples.cpp
new file mode 100644
index 0000000..aecbfb5
--- /dev/null
+++ b/clang/test/CXX/temp/temp.spec/temp.expl.spec/examples.cpp
@@ -0,0 +1,334 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+namespace PR5907 {
+  template<typename T> struct identity { typedef T type; };
+  struct A { A(); }; 
+  identity<A>::type::A() { }
+
+  struct B { void f(); };
+  template<typename T> struct C { typedef B type; };
+  
+  void C<int>::type::f() { }
+}
+
+namespace PR9421 {
+  namespace N { template<typename T> struct S { void f(); }; }
+  typedef N::S<int> T;
+  namespace N { template<> void T::f() {} }
+}
+
+namespace PR8277 {
+  template< typename S >
+  struct C
+  {
+    template< int >
+    void F( void )
+    {
+    }
+  };
+
+  template< typename S >
+  struct D
+  {
+    typedef C< int > A;
+  };
+
+  typedef D< int >::A A;
+
+  template<>
+  template<>
+  void A::F< 0 >( void )
+  {
+  }
+}
+
+namespace PR8277b {
+  template<typename S> struct C {
+    void f();
+  };
+  template<typename S> struct D {
+    typedef C<int> A;
+  };
+  template<> void D<int>::A::f() {
+  }
+}
+
+namespace PR8708 {
+  template<typename T> struct A { 
+    template<typename U> struct B {
+      // #2
+      void f();     
+    }; 
+  };  
+
+  // #A specialize the member template for 
+  // implicit instantiation of A<int>,
+  // leaving the member template "unspecialized"
+  // (14.7.3/16). Specialization uses the syntax
+  // for explicit specialization (14.7.3/14)
+  template<> template<typename U> 
+  struct A<int>::B {
+    // #1
+    void g();
+  };  
+
+  // #1 define its function g. There is an enclosing
+  // class template, so we write template<> for each 
+  // specialized template (14.7.3/15).
+  template<> template<typename U>
+  void A<int>::B<U>::g() { }
+
+  // #2 define the unspecialized member template's
+  // f
+  template<typename T> template<typename U>
+  void A<T>::B<U>::f() { }
+
+
+  // specialize the member template again, now
+  // specializing the member too. This specializes
+  // #A
+  template<> template<>
+  struct A<int>::B<int> { 
+    // #3
+    void h();
+  };
+
+  // defines #3. There is no enclosing class template, so
+  // we write no "template<>".
+  void A<int>::B<int>::h() { }
+
+  void test() { 
+    // calls #1
+    A<int>::B<float> a; a.g(); 
+
+    // calls #2
+    A<float>::B<int> b; b.f();
+
+    // calls #3
+    A<int>::B<int> c; c.h();
+  }
+}
+
+namespace PR9482 {
+  namespace N1 {
+    template <typename T> struct S {
+      void foo() {}
+    };
+  }
+
+  namespace N2 {
+    typedef N1::S<int> X;
+  }
+
+  namespace N1 {
+    template<> void N2::X::foo() {}
+  }
+}
+
+namespace PR9668 {
+  namespace First
+  {
+    template<class T>
+    class Bar
+    {
+    protected:
+
+      static const bool static_bool;
+    };
+  }
+
+  namespace Second
+  {
+    class Foo;
+  }
+
+  typedef First::Bar<Second::Foo> Special;
+
+  namespace
+  First
+  {
+    template<>
+    const bool Special::static_bool(false);
+  }
+}
+
+namespace PR9877 {
+  template<int>
+  struct X
+  {
+    struct Y;
+  };
+
+  template<> struct X<0>::Y { static const int Z = 1; };
+  template<> struct X<1>::Y { static const int Z = 1; };
+
+  const int X<0>::Y::Z;
+  template<> const int X<1>::Y::Z; // expected-error{{extraneous 'template<>' in declaration of variable 'Z'}}
+}
+
+namespace PR9913 {
+  template<class,class=int>struct S;
+  template<class X>struct S<X> {
+    template<class T> class F;
+  };
+
+  template<class A>
+  template<class B>
+  class S<A>::F{};
+}
+
+namespace template_class_spec_perClassDecl_nested
+{
+  template <typename T1> struct A {
+    template <typename T2> struct B {
+      template <typename T3> struct C {
+        static void foo();
+      };
+    };
+  };
+
+  template <> struct A<int> {
+    template <typename T2> struct B {
+      template <typename T3> struct C {
+        static void foo();
+      };
+    };
+  };
+
+  template <> template <typename T3> struct A<int>::B<int>::C {
+    static void foo();
+  };
+
+  template <> template <> struct A<int>::B<int>::C<int> {
+    static void foo();
+  };
+
+  template <> template<> template <typename T2> struct A<bool>::B<bool>::C {
+    static void foo();
+  };
+}
+
+
+namespace spec_vs_expl_inst {
+
+  // Test all permutations of Specialization,
+  // explicit instantiation Declaration, and explicit instantiation defInition.
+
+  namespace SDI {  // PR11558
+    template <typename STRING_TYPE> class BasicStringPiece;
+    template <> class BasicStringPiece<int> { };
+    extern template class BasicStringPiece<int>;
+    template class BasicStringPiece<int>;
+  }
+
+  namespace SID {
+    template <typename STRING_TYPE> class BasicStringPiece;
+    template <> class BasicStringPiece<int> { };
+    template class BasicStringPiece<int>;  // expected-note {{explicit instantiation definition is here}}
+    extern template class BasicStringPiece<int>;  // expected-error {{explicit instantiation declaration (with 'extern') follows explicit instantiation definition (without 'extern')}}
+  }
+
+  namespace ISD {
+    template <typename STRING_TYPE> class BasicStringPiece;  // expected-note {{template is declared here}}
+    template class BasicStringPiece<int>;  // expected-error {{explicit instantiation of undefined template 'spec_vs_expl_inst::ISD::BasicStringPiece<int>'}}
+    template <> class BasicStringPiece<int> { };
+    extern template class BasicStringPiece<int>;
+  }
+
+  namespace IDS {
+    template <typename STRING_TYPE> class BasicStringPiece;  // expected-note {{template is declared here}}
+    template class BasicStringPiece<int>;  // expected-error {{explicit instantiation of undefined template 'spec_vs_expl_inst::IDS::BasicStringPiece<int>'}}  // expected-note {{explicit instantiation definition is here}}
+    extern template class BasicStringPiece<int>;  // expected-error {{explicit instantiation declaration (with 'extern') follows explicit instantiation definition (without 'extern')}}
+    template <> class BasicStringPiece<int> { };
+  }
+
+  namespace DIS {
+    template <typename STRING_TYPE> class BasicStringPiece;  // expected-note {{template is declared here}}
+    extern template class BasicStringPiece<int>;  // expected-error {{explicit instantiation of undefined template 'spec_vs_expl_inst::DIS::BasicStringPiece<int>'}}
+    template class BasicStringPiece<int>;
+    template <> class BasicStringPiece<int> { };
+  }
+
+  namespace DSI {
+    template <typename STRING_TYPE> class BasicStringPiece;  // expected-note {{template is declared here}}
+    extern template class BasicStringPiece<int>;  // expected-error {{explicit instantiation of undefined template 'spec_vs_expl_inst::DSI::BasicStringPiece<int>'}}
+    template <> class BasicStringPiece<int> { };
+    template class BasicStringPiece<int>;
+  }
+
+  // The same again, with a defined template class.
+
+  namespace SDI_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    template <> class BasicStringPiece<int> { };
+    extern template class BasicStringPiece<int>;
+    template class BasicStringPiece<int>;
+  }
+
+  namespace SID_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    template <> class BasicStringPiece<int> { };
+    template class BasicStringPiece<int>;  // expected-note {{explicit instantiation definition is here}}
+    extern template class BasicStringPiece<int>;  // expected-error {{explicit instantiation declaration (with 'extern') follows explicit instantiation definition (without 'extern')}}
+  }
+
+  namespace ISD_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    template class BasicStringPiece<int>;  // expected-note {{explicit instantiation first required here}}
+    template <> class BasicStringPiece<int> { };  // expected-error {{explicit specialization of 'spec_vs_expl_inst::ISD_WithDefinedTemplate::BasicStringPiece<int>' after instantiation}}
+    extern template class BasicStringPiece<int>;
+  }
+
+  namespace IDS_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    template class BasicStringPiece<int>;  // expected-note {{explicit instantiation definition is here}} expected-note {{previous definition is here}}
+    extern template class BasicStringPiece<int>;  // expected-error {{explicit instantiation declaration (with 'extern') follows explicit instantiation definition (without 'extern')}}
+    template <> class BasicStringPiece<int> { };  // expected-error {{redefinition of 'spec_vs_expl_inst::IDS_WithDefinedTemplate::BasicStringPiece<int>'}}
+  }
+
+  namespace DIS_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    extern template class BasicStringPiece<int>;  // expected-note {{explicit instantiation first required here}}
+    template class BasicStringPiece<int>;
+    template <> class BasicStringPiece<int> { };  // expected-error {{explicit specialization of 'spec_vs_expl_inst::DIS_WithDefinedTemplate::BasicStringPiece<int>' after instantiation}}
+  }
+
+  namespace DSI_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    extern template class BasicStringPiece<int>;  // expected-note {{explicit instantiation first required here}}
+    template <> class BasicStringPiece<int> { };  // expected-error {{explicit specialization of 'spec_vs_expl_inst::DSI_WithDefinedTemplate::BasicStringPiece<int>' after instantiation}}
+    template class BasicStringPiece<int>;
+  }
+
+  // And some more random tests.
+
+  namespace SII_WithDefinedTemplate {
+    template <typename STRING_TYPE> class BasicStringPiece {};
+    template <> class BasicStringPiece<int> { };
+    template class BasicStringPiece<int>;  // expected-note {{previous explicit instantiation is here}}
+    template class BasicStringPiece<int>;  // expected-error {{duplicate explicit instantiation of 'BasicStringPiece<int>'}}
+  }
+
+  namespace SIS {
+    template <typename STRING_TYPE> class BasicStringPiece;
+    template <> class BasicStringPiece<int> { };  // expected-note {{previous definition is here}}
+    template class BasicStringPiece<int>;
+    template <> class BasicStringPiece<int> { };  // expected-error {{redefinition of 'spec_vs_expl_inst::SIS::BasicStringPiece<int>'}}
+  }
+
+  namespace SDS {
+    template <typename STRING_TYPE> class BasicStringPiece;
+    template <> class BasicStringPiece<int> { };  // expected-note {{previous definition is here}}
+    extern template class BasicStringPiece<int>;
+    template <> class BasicStringPiece<int> { };  // expected-error {{redefinition of 'spec_vs_expl_inst::SDS::BasicStringPiece<int>'}}
+  }
+
+  namespace SDIS {
+    template <typename STRING_TYPE> class BasicStringPiece;
+    template <> class BasicStringPiece<int> { };  // expected-note {{previous definition is here}}
+    extern template class BasicStringPiece<int>;
+    template class BasicStringPiece<int>;
+    template <> class BasicStringPiece<int> { };  // expected-error {{redefinition of 'spec_vs_expl_inst::SDIS::BasicStringPiece<int>'}}
+  }
+
+}