1 // RUN: %clang_cc1 -fsyntax-only -verify %s
3 template void *; // expected-error{{expected unqualified-id}}
5 template typedef void f0; // expected-error{{explicit instantiation of typedef}}
7 int v0; // expected-note{{refers here}}
8 template int v0; // expected-error{{does not refer}}
15 return x + 1; // expected-error{{invalid operands}}
17 T* f0(T*, T*) { return T(); } // expected-warning{{expression which evaluates to zero treated as a null pointer constant of type 'int *'}}
19 template <typename U> T f0(T, U) { return T(); } // expected-note {{candidate template ignored: could not match 'int (int, U)' against 'int (int) const'}} \
20 // expected-note {{candidate template ignored: could not match 'int' against 'int *'}}
24 T X0<T>::value; // expected-error{{no matching constructor}}
26 template int X0<int>::value;
28 struct NotDefaultConstructible { // expected-note{{candidate constructor (the implicit copy constructor)}}
29 NotDefaultConstructible(int); // expected-note{{candidate constructor}}
32 template NotDefaultConstructible X0<NotDefaultConstructible>::value; // expected-note{{instantiation}}
34 template int X0<int>::f0(int);
35 template int* X0<int>::f0(int*, int*); // expected-note{{in instantiation of member function 'X0<int>::f0' requested here}}
36 template int X0<int>::f0(int, float);
38 template int X0<int>::f0(int) const; // expected-error{{does not refer}}
39 template int* X0<int>::f0(int*, float*); // expected-error{{does not refer}}
42 typedef int X1::*MemPtr;
44 template MemPtr X0<MemPtr>::f0(MemPtr); // expected-note{{requested here}}
47 int f0(int); // expected-note{{refers here}}
49 template<typename T> T f1(T) { return T(); }
50 template<typename T> T* f1(T*) { return 0; }
52 template<typename T, typename U> void f2(T, U*) { } // expected-note{{candidate}}
53 template<typename T, typename U> void f2(T*, U) { } // expected-note{{candidate}}
56 template int X2::f0(int); // expected-error{{not an instantiation}}
58 template int *X2::f1(int *); // okay
60 template void X2::f2(int *, int *); // expected-error{{ambiguous}}
63 void print_type() {} // expected-note {{candidate template ignored: could not match 'void ()' against 'void (float *)'}}
65 template void print_type<int>();
66 template void print_type<float>();
69 void print_type(T *) {} // expected-note {{candidate template ignored: could not match 'void (int *)' against 'void (float *)'}}
71 template void print_type(int*);
72 template void print_type<int>(float*); // expected-error{{does not refer}}
74 void print_type(double*);
75 template void print_type<double>(double*);
78 template<int I> void foo0 (int (&)[I + 1]) { }
79 template void foo0<2> (int (&)[3]);
81 namespace explicit_instantiation_after_implicit_instantiation {
82 template <int I> struct X0 { static int x; };
83 template <int I> int X0<I>::x;
84 void test1() { (void)&X0<1>::x; }
85 template struct X0<1>;
88 template<typename> struct X3 { };
89 inline template struct X3<int>; // expected-warning{{ignoring 'inline' keyword on explicit template instantiation}}
90 static template struct X3<float>; // expected-warning{{ignoring 'static' keyword on explicit template instantiation}}
93 template<typename,typename=int>
94 struct basic_streambuf;
96 template<typename,typename>
97 struct basic_streambuf{friend bob<>()}; // expected-error{{unknown type name 'bob'}} \
98 // expected-error{{expected member name or ';' after declaration specifiers}}
99 template struct basic_streambuf<int>;
102 // Test that we do not crash.
105 template // FIXME: error here.
111 template <typename T> struct X { X() {} };
112 template<> struct X<int> { X(); };
113 template X<int>::X() {} // expected-error{{function cannot be defined in an explicit instantiation}}
117 template void foobar(int i) {} // expected-error{{function cannot be defined in an explicit instantiation}}
123 namespace undefined_static_data_member {
124 template<typename T> struct A {
125 static int a; // expected-note {{here}}
126 template<typename U> static int b; // expected-note {{here}} expected-warning {{extension}}
129 template<typename U> static int c; // expected-note {{here}} expected-warning {{extension}}
132 template int A<int>::a; // expected-error {{explicit instantiation of undefined static data member 'a' of class template 'undefined_static_data_member::A<int>'}}
133 template int A<int>::b<int>; // expected-error {{explicit instantiation of undefined variable template 'undefined_static_data_member::A<int>::b<int>'}}
134 template int B::c<int>; // expected-error {{explicit instantiation of undefined variable template 'undefined_static_data_member::B::c<int>'}}
137 template<typename T> struct C {
139 template<typename U> static int b; // expected-warning {{extension}}
142 template<typename U> static int c; // expected-warning {{extension}}
144 template<typename T> int C<T>::a;
145 template<typename T> template<typename U> int C<T>::b; // expected-warning {{extension}}
146 template<typename U> int D::c; // expected-warning {{extension}}
148 template int C<int>::a;
149 template int C<int>::b<int>;
150 template int D::c<int>;