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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);
+ (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}}
+}
+
+namespace PR8425 {
+ template <typename T>
+ class BaseT {};
+
+ template <typename T>
+ class DerivedT : public BaseT<T> {};
+
+ template <typename T>
+ class FromT {
+ public:
+ operator DerivedT<T>() const { return DerivedT<T>(); }
+ };
+
+ void test() {
+ FromT<int> ft;
+ BaseT<int> bt(ft);
+ }
+}