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// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T> class A;
extern "C++" {
template<typename T> class B;
}
namespace N {
template<typename T> class C;
}
extern "C" { // expected-note {{extern "C" language linkage specification begins here}}
template<typename T> class D; // expected-error{{templates must have C++ linkage}}
}
extern "C" { // expected-note 2 {{extern "C" language linkage specification begins here}}
class PR17968 {
template<typename T> class D; // expected-error{{templates must have C++ linkage}}
template<typename T> void f(); // expected-error{{templates must have C++ linkage}}
};
}
template<class U> class A; // expected-note{{previous template declaration is here}}
template<int N> class A; // expected-error{{template parameter has a different kind in template redeclaration}}
template<int N> class NonTypeTemplateParm;
typedef int INT;
template<INT M> class NonTypeTemplateParm; // expected-note{{previous non-type template parameter with type 'INT' (aka 'int') is here}}
template<long> class NonTypeTemplateParm; // expected-error{{template non-type parameter has a different type 'long' in template redeclaration}}
template<template<typename T> class X> class TemplateTemplateParm;
template<template<class> class Y> class TemplateTemplateParm; // expected-note{{previous template declaration is here}} \
// expected-note{{previous template template parameter is here}}
template<typename> class TemplateTemplateParm; // expected-error{{template parameter has a different kind in template redeclaration}}
template<template<typename T, int> class X> class TemplateTemplateParm; // expected-error{{too many template parameters in template template parameter redeclaration}}
template<typename T>
struct test {}; // expected-note{{previous definition}}
template<typename T>
struct test : T {}; // expected-error{{redefinition}}
class X {
public:
template<typename T> class C;
};
void f() {
template<typename T> class X; // expected-error{{expression}}
}
template<typename T> class X1 var; // expected-error {{variable has incomplete type 'class X1'}} \
// expected-note {{forward declaration of 'X1'}}
namespace M {
}
template<typename T> class M::C3 { }; // expected-error{{out-of-line definition of 'C3' does not match any declaration in namespace 'M'}}
namespace PR8001 {
template<typename T1>
struct Foo {
template<typename T2> class Bar;
typedef Bar<T1> Baz;
template<typename T2>
struct Bar {
Bar() {}
};
};
void pr8001() {
Foo<int>::Baz x;
Foo<int>::Bar<int> y(x);
}
}
namespace rdar9676205 {
template <unsigned, class _Tp> class tuple_element;
template <class _T1, class _T2> class pair;
template <class _T1, class _T2>
class tuple_element<0, pair<_T1, _T2> >
{
template <class _Tp>
struct X
{
template <class _Up, bool = X<_Up>::value>
struct Y
: public X<_Up>,
public Y<_Up>
{ };
};
};
}
namespace redecl {
int A; // expected-note {{here}}
template<typename T> struct A; // expected-error {{different kind of symbol}}
int B; // expected-note {{here}}
template<typename T> struct B { // expected-error {{different kind of symbol}}
};
template<typename T> struct F;
template<typename T> struct K;
int G, H; // expected-note {{here}}
struct S {
int C; // expected-note {{here}}
template<typename T> struct C; // expected-error {{different kind of symbol}}
int D; // expected-note {{here}}
template<typename T> struct D { // expected-error {{different kind of symbol}}
};
int E;
template<typename T> friend struct E { // expected-error {{cannot define a type in a friend}}
};
int F;
template<typename T> friend struct F; // ok, redecl::F
template<typename T> struct G; // ok
template<typename T> friend struct H; // expected-error {{different kind of symbol}}
int I, J, K;
struct U {
template<typename T> struct I; // ok
template<typename T> struct J { // ok
};
template<typename T> friend struct K; // ok, redecl::K
};
};
}
extern "C" template <typename T> // expected-error{{templates must have C++ linkage}}
void DontCrashOnThis() { // expected-note@-1 {{extern "C" language linkage specification begins here}}
T &pT = T();
pT;
}
namespace abstract_dependent_class {
template<typename T> struct A {
virtual A<T> *clone() = 0; // expected-note {{pure virtual}}
};
template<typename T> A<T> *A<T>::clone() { return new A<T>; } // expected-error {{abstract class type 'A<T>'}}
}
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