184 lines
3.6 KiB
C++
184 lines
3.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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template<typename T>
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class X {
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public:
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void f(T x); // expected-error{{argument may not have 'void' type}}
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void g(T*);
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static int h(T, T); // expected-error {{argument may not have 'void' type}}
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};
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int identity(int x) { return x; }
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void test(X<int> *xi, int *ip, X<int(int)> *xf) {
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xi->f(17);
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xi->g(ip);
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xf->f(&identity);
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xf->g(identity);
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X<int>::h(17, 25);
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X<int(int)>::h(identity, &identity);
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}
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void test_bad() {
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X<void> xv; // expected-note{{in instantiation of template class 'X<void>' requested here}}
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}
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template<typename T, typename U>
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class Overloading {
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public:
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int& f(T, T); // expected-note{{previous declaration is here}}
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float& f(T, U); // expected-error{{functions that differ only in their return type cannot be overloaded}}
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};
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void test_ovl(Overloading<int, long> *oil, int i, long l) {
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int &ir = oil->f(i, i);
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float &fr = oil->f(i, l);
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}
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void test_ovl_bad() {
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Overloading<float, float> off; // expected-note{{in instantiation of template class 'Overloading<float, float>' requested here}}
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}
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template<typename T>
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class HasDestructor {
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public:
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virtual ~HasDestructor() = 0;
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};
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int i = sizeof(HasDestructor<int>); // FIXME: forces instantiation, but
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// the code below should probably instantiate by itself.
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int abstract_destructor[__is_abstract(HasDestructor<int>)? 1 : -1];
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template<typename T>
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class Constructors {
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public:
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Constructors(const T&);
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Constructors(const Constructors &other);
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};
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void test_constructors() {
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Constructors<int> ci1(17);
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Constructors<int> ci2 = ci1;
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}
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template<typename T>
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struct ConvertsTo {
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operator T();
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};
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void test_converts_to(ConvertsTo<int> ci, ConvertsTo<int *> cip) {
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int i = ci;
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int *ip = cip;
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}
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// PR4660
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template<class T> struct A0 { operator T*(); };
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template<class T> struct A1;
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int *a(A0<int> &x0, A1<int> &x1) {
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int *y0 = x0;
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int *y1 = x1; // expected-error{{no viable conversion}}
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}
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struct X0Base {
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int &f();
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int& g(int);
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static double &g(double);
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};
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template<typename T>
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struct X0 : X0Base {
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};
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template<typename U>
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struct X1 : X0<U> {
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int &f2() {
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return X0Base::f();
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}
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};
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void test_X1(X1<int> x1i) {
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int &ir = x1i.f2();
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}
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template<typename U>
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struct X2 : X0Base, U {
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int &f2() { return X0Base::f(); }
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};
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template<typename T>
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struct X3 {
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void test(T x) {
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double& d1 = X0Base::g(x);
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}
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};
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template struct X3<double>;
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// Don't try to instantiate this, it's invalid.
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namespace test1 {
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template <class T> class A {};
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template <class T> class B {
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void foo(A<test1::Undeclared> &a) // expected-error {{no member named 'Undeclared' in namespace 'test1'}}
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{}
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};
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template class B<int>;
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}
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namespace PR6947 {
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template< class T >
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struct X {
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int f0( )
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{
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typedef void ( X::*impl_fun_ptr )( );
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impl_fun_ptr pImpl = &X::template
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f0_impl1<int>;
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}
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private:
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int f1() {
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}
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template< class Processor>
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void f0_impl1( )
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{
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}
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};
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char g0() {
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X<int> pc;
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pc.f0();
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}
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}
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namespace PR7022 {
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template <typename >
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struct X1
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{
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typedef int state_t( );
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state_t g ;
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};
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template < typename U = X1<int> > struct X2
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{
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X2( U = U())
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{
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}
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};
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void m(void)
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{
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typedef X2<> X2_type;
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X2_type c;
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}
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}
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namespace SameSignatureAfterInstantiation {
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template<typename T> struct S {
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void f(T *); // expected-note {{previous}}
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void f(const T*); // expected-error {{multiple overloads of 'f' instantiate to the same signature 'void (const int *)'}}
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};
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S<const int> s; // expected-note {{instantiation}}
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}
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