1 // RUN: %clang_cc1 -fsyntax-only -verify -fexceptions -fcxx-exceptions %s
2 // RUN: %clang_cc1 -fsyntax-only -verify -fexceptions -fcxx-exceptions -std=c++11 %s
3
4 template void *; // expected-error{{expected unqualified-id}}
5
6 template typedef void f0; // expected-error{{explicit instantiation of typedef}}
7
8 int v0; // expected-note{{refers here}}
9 template int v0; // expected-error{{does not refer}}
10
11 template<typename T>
12 struct X0 {
13 static T value;
14
f0X015 T f0(T x) {
16 return x + 1; // expected-error{{invalid operands}}
17 }
f0X018 T *f0(T *, T *) { return T(); } // expected-warning 0-1 {{expression which evaluates to zero treated as a null pointer constant of type 'int *'}} expected-error 0-1 {{cannot initialize return object of type 'int *' with an rvalue of type 'int'}}
19
f0X020 template <typename U> T f0(T, U) { return T(); } // expected-note-re {{candidate template ignored: could not match 'int (int, U){{( __attribute__\(\(thiscall\)\))?}}' against 'int (int){{( __attribute__\(\(thiscall\)\))?}} const'}} \
21 // expected-note {{candidate template ignored: could not match 'int' against 'int *'}}
22 };
23
24 template<typename T>
25 T X0<T>::value; // expected-error{{no matching constructor}}
26
27 template int X0<int>::value;
28
29 struct NotDefaultConstructible { // expected-note{{candidate constructor (the implicit copy constructor)}} expected-note 0-1 {{candidate constructor (the implicit move constructor)}}
30 NotDefaultConstructible(int); // expected-note{{candidate constructor}}
31 };
32
33 template NotDefaultConstructible X0<NotDefaultConstructible>::value; // expected-note{{instantiation}}
34
35 template int X0<int>::f0(int);
36 template int* X0<int>::f0(int*, int*); // expected-note{{in instantiation of member function 'X0<int>::f0' requested here}}
37 template int X0<int>::f0(int, float);
38
39 template int X0<int>::f0(int) const; // expected-error{{does not refer}}
40 template int* X0<int>::f0(int*, float*); // expected-error{{does not refer}}
41
42 struct X1 { };
43 typedef int X1::*MemPtr;
44
45 template MemPtr X0<MemPtr>::f0(MemPtr); // expected-note{{requested here}}
46
47 struct X2 {
48 int f0(int); // expected-note{{refers here}}
49
f1X250 template<typename T> T f1(T) { return T(); }
f1X251 template<typename T> T* f1(T*) { return 0; }
52
f2X253 template<typename T, typename U> void f2(T, U*) { } // expected-note{{candidate}}
f2X254 template<typename T, typename U> void f2(T*, U) { } // expected-note{{candidate}}
55 };
56
57 template int X2::f0(int); // expected-error{{not an instantiation}}
58
59 template int *X2::f1(int *); // okay
60
61 template void X2::f2(int *, int *); // expected-error{{ambiguous}}
62
63 template <typename T>
print_type()64 void print_type() {} // expected-note {{candidate template ignored: could not match 'void ()' against 'void (float *)'}}
65
66 template void print_type<int>();
67 template void print_type<float>();
68
69 template <typename T>
print_type(T *)70 void print_type(T *) {} // expected-note {{candidate template ignored: could not match 'void (int *)' against 'void (float *)'}}
71
72 template void print_type(int*);
73 template void print_type<int>(float*); // expected-error{{does not refer}}
74
75 void print_type(double*);
76 template void print_type<double>(double*);
77
78 // PR5069
foo0(int (&)[I+1])79 template<int I> void foo0 (int (&)[I + 1]) { }
80 template void foo0<2> (int (&)[3]);
81
82 namespace explicit_instantiation_after_implicit_instantiation {
83 template <int I> struct X0 { static int x; };
84 template <int I> int X0<I>::x;
test1()85 void test1() { (void)&X0<1>::x; }
86 template struct X0<1>;
87 }
88
89 template<typename> struct X3 { };
90 inline template struct X3<int>; // expected-warning{{ignoring 'inline' keyword on explicit template instantiation}}
91 static template struct X3<float>; // expected-warning{{ignoring 'static' keyword on explicit template instantiation}}
92
93 namespace PR7622 {
94 template<typename,typename=int>
95 struct basic_streambuf;
96
97 template<typename,typename>
98 struct basic_streambuf{friend bob<>()}; // expected-error{{no template named 'bob'}} \
99 // expected-error{{expected member name or ';' after declaration specifiers}}
100 template struct basic_streambuf<int>;
101 }
102
103 // Test that we do not crash.
104 class TC1 {
105 class TC2 {
106 template
107 void foo() { } // expected-error{{expected '<' after 'template'}}
108 };
109 };
110
111 namespace PR8020 {
112 template <typename T> struct X { X() {} };
113 template<> struct X<int> { X(); };
114 template X<int>::X() {} // expected-error{{function cannot be defined in an explicit instantiation}}
115 }
116
117 namespace PR10086 {
118 template void foobar(int i) {} // expected-error{{function cannot be defined in an explicit instantiation}}
119 int func() {
120 foobar(5);
121 }
122 }
123
124 namespace undefined_static_data_member {
125 template<typename T> struct A {
126 static int a; // expected-note {{here}}
127 template<typename U> static int b; // expected-note {{here}} expected-warning 0+ {{extension}}
128 };
129 struct B {
130 template<typename U> static int c; // expected-note {{here}} expected-warning 0+ {{extension}}
131 };
132
133 template int A<int>::a; // expected-error {{explicit instantiation of undefined static data member 'a' of class template 'undefined_static_data_member::A<int>'}}
134 template int A<int>::b<int>; // expected-error {{explicit instantiation of undefined variable template 'undefined_static_data_member::A<int>::b<int>'}}
135 template int B::c<int>; // expected-error {{explicit instantiation of undefined variable template 'undefined_static_data_member::B::c<int>'}}
136
137
138 template<typename T> struct C {
139 static int a;
140 template<typename U> static int b; // expected-warning 0+ {{extension}}
141 };
142 struct D {
143 template<typename U> static int c; // expected-warning 0+ {{extension}}
144 };
145 template<typename T> int C<T>::a;
146 template<typename T> template<typename U> int C<T>::b; // expected-warning 0+ {{extension}}
147 template<typename U> int D::c; // expected-warning 0+ {{extension}}
148
149 template int C<int>::a;
150 template int C<int>::b<int>;
151 template int D::c<int>;
152 }
153
154 // expected-note@+1 3-4 {{explicit instantiation refers here}}
155 template <class T> void Foo(T i) throw(T) { throw i; }
156 // expected-error@+1 {{exception specification in explicit instantiation does not match instantiated one}}
157 template void Foo(int a) throw(char);
158 // expected-error@+1 {{exception specification in explicit instantiation does not match instantiated one}}
159 template void Foo(double a) throw();
160 // expected-error@+1 1 {{exception specification in explicit instantiation does not match instantiated one}}
161 template void Foo(long a) throw(long, char);
162 template void Foo(float a);
163 #if __cplusplus >= 201103L
164 // expected-error@+1 0-1 {{exception specification in explicit instantiation does not match instantiated one}}
165 template void Foo(double a) noexcept;
166 #endif
167
168 #if __cplusplus >= 201103L
169 namespace PR21942 {
170 template <int>
171 struct A {
172 virtual void foo() final;
173 };
174
175 template <>
176 void A<0>::foo() {} // expected-note{{overridden virtual function is here}}
177
178 struct B : A<0> {
179 virtual void foo() override; // expected-error{{declaration of 'foo' overrides a 'final' function}}
180 };
181 }
182 #endif
183