forked from OSchip/llvm-project
149 lines
3.6 KiB
C++
149 lines
3.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// Tests various places where requiring a complete type involves
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// instantiation of that type.
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template<typename T>
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struct X {
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X(T);
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T f; // expected-error{{data member instantiated with function type 'float (int)'}} \
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// expected-error{{data member instantiated with function type 'int (int)'}} \
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// expected-error{{data member instantiated with function type 'char (char)'}} \
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// expected-error{{data member instantiated with function type 'short (short)'}} \
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// expected-error{{data member instantiated with function type 'float (float)'}}
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};
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X<int> f() { return 0; }
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struct XField {
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X<float(int)> xf; // expected-note{{in instantiation of template class 'X<float (int)>' requested here}}
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};
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void test_subscript(X<double> *ptr1, X<int(int)> *ptr2, int i) {
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(void)ptr1[i];
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(void)ptr2[i]; // expected-note{{in instantiation of template class 'X<int (int)>' requested here}}
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}
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void test_arith(X<signed char> *ptr1, X<unsigned char> *ptr2,
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X<char(char)> *ptr3, X<short(short)> *ptr4) {
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(void)(ptr1 + 5);
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// FIXME: if I drop the ')' after void, below, it still parses (!)
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(void)(5 + ptr2);
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(void)(ptr3 + 5); // expected-note{{in instantiation of template class 'X<char (char)>' requested here}}
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(void)(5 + ptr4); // expected-note{{in instantiation of template class 'X<short (short)>' requested here}}
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}
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void test_new() {
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(void)new X<float>(0);
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(void)new X<float(float)>; // expected-note{{in instantiation of template class 'X<float (float)>' requested here}}
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}
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void test_memptr(X<long> *p1, long X<long>::*pm1,
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X<long(long)> *p2,
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long (X<long(long)>::*pm2)(long)) {
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(void)(p1->*pm1);
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}
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// Reference binding to a base
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template<typename T>
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struct X1 { };
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template<typename T>
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struct X2 : public T { };
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void refbind_base(X2<X1<int> > &x2) {
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X1<int> &x1 = x2;
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}
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// Enumerate constructors for user-defined conversion.
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template<typename T>
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struct X3 {
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X3(T);
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};
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void enum_constructors(X1<float> &x1) {
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X3<X1<float> > x3 = x1;
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}
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namespace PR6376 {
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template<typename T, typename U> struct W { };
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template<typename T>
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struct X {
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template<typename U>
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struct apply {
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typedef W<T, U> type;
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};
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};
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template<typename T, typename U>
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struct Y : public X<T>::template apply<U>::type { };
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template struct Y<int, float>;
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}
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namespace TemporaryObjectCopy {
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// Make sure we instantiate classes when we create a temporary copy.
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template<typename T>
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struct X {
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X(T);
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};
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template<typename T>
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void f(T t) {
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const X<int> &x = X<int>(t);
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}
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template void f(int);
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}
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namespace PR7080 {
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template <class T, class U>
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class X
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{
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typedef char true_t;
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class false_t { char dummy[2]; };
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static true_t dispatch(U);
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static false_t dispatch(...);
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static T trigger();
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public:
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enum { value = sizeof(dispatch(trigger())) == sizeof(true_t) };
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};
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template <class T>
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class rv : public T
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{ };
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bool x = X<int, rv<int>&>::value;
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}
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namespace pr7199 {
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template <class T> class A; // expected-note {{template is declared here}}
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template <class T> class B {
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class A<T>::C field; // expected-error {{implicit instantiation of undefined template 'pr7199::A<int>'}}
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};
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template class B<int>; // expected-note {{in instantiation}}
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}
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namespace PR8425 {
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template <typename T>
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class BaseT {};
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template <typename T>
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class DerivedT : public BaseT<T> {};
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template <typename T>
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class FromT {
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public:
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operator DerivedT<T>() const { return DerivedT<T>(); }
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};
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void test() {
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FromT<int> ft;
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BaseT<int> bt(ft);
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}
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}
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