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