1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
3 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
4 int f(double); // expected-note{{candidate function}}
5 int f(int); // expected-note{{candidate function}}
6
7 int (*pfd)(double) = f; // selects f(double)
8 int (*pfd2)(double) = &f; // selects f(double)
9 int (*pfd3)(double) = ((&((f)))); // selects f(double)
10 int (*pfi)(int) = &f; // selects f(int)
11 // FIXME: This error message is not very good. We need to keep better
12 // track of what went wrong when the implicit conversion failed to
13 // give a better error message here.
14 int (*pfe)(...) = &f; // expected-error{{address of overloaded function 'f' does not match required type 'int (...)'}}
15 int (&rfi)(int) = f; // selects f(int)
16 int (&rfd)(double) = f; // selects f(double)
17
18 void g(int (*fp)(int)); // expected-note{{candidate function}}
19 void g(int (*fp)(float));
20 void g(int (*fp)(double)); // expected-note{{candidate function}}
21
22 int g1(int);
23 int g1(char);
24
25 int g2(int);
26 int g2(double);
27
28 template<typename T> T g3(T);
29 int g3(int);
30 int g3(char);
31
g_test()32 void g_test() {
33 g(g1);
34 g(g2); // expected-error{{call to 'g' is ambiguous}}
35 g(g3);
36 }
37
38 template<typename T> T h1(T);
39 template<typename R, typename A1> R h1(A1);
40 int h1(char);
41
42 void ha(int (*fp)(int));
43 void hb(int (*fp)(double));
44
h_test()45 void h_test() {
46 ha(h1);
47 hb(h1);
48 }
49
50 struct A { };
51 void f(void (*)(A *));
52
53 struct B
54 {
gB55 void g() { f(d); }
56 void d(void *);
57 static void d(A *);
58 };
59
60 struct C {
getCC61 C &getC() {
62 return makeAC; // expected-error{{reference to non-static member function must be called; did you mean to call it with no arguments?}}
63 }
64
65 // FIXME: filter by const so we can unambiguously suggest '()' & point to just the one candidate, probably
66 C &makeAC(); // expected-note{{possible target for call}}
67 const C &makeAC() const; // expected-note{{possible target for call}}
68
69 static void f(); // expected-note{{candidate function}}
70 static void f(int); // expected-note{{candidate function}}
71
gC72 void g() {
73 int (&fp)() = f; // expected-error{{address of overloaded function 'f' does not match required type 'int ()'}}
74 }
75
76 template<typename T>
77 void q1(int); // expected-note{{possible target for call}}
78 template<typename T>
79 void q2(T t = T()); // expected-note{{possible target for call}}
80 template<typename T>
81 void q3(); // expected-note{{possible target for call}}
82 template<typename T1, typename T2>
83 void q4(); // expected-note{{possible target for call}}
84 template<typename T1 = int>
85 #if __cplusplus <= 199711L // C++03 or earlier modes
86 // expected-warning@-2{{default template arguments for a function template are a C++11 extension}}
87 #endif
88 void q5(); // expected-note{{possible target for call}}
89
hC90 void h() {
91 // Do not suggest '()' since an int argument is required
92 q1<int>; // expected-error-re{{reference to non-static member function must be called{{$}}}}
93 // Suggest '()' since there's a default value for the only argument & the
94 // type argument is already provided
95 q2<int>; // expected-error{{reference to non-static member function must be called; did you mean to call it with no arguments?}}
96 // Suggest '()' since no arguments are required & the type argument is
97 // already provided
98 q3<int>; // expected-error{{reference to non-static member function must be called; did you mean to call it with no arguments?}}
99 // Do not suggest '()' since another type argument is required
100 q4<int>; // expected-error-re{{reference to non-static member function must be called{{$}}}}
101 // Suggest '()' since the type parameter has a default value
102 q5; // expected-error{{reference to non-static member function must be called; did you mean to call it with no arguments?}}
103 }
104 };
105
106 // PR6886
107 namespace test0 {
108 void myFunction(void (*)(void *));
109
110 class Foo {
111 void foo();
112
113 static void bar(void*);
114 static void bar();
115 };
116
foo()117 void Foo::foo() {
118 myFunction(bar);
119 }
120 }
121
122 namespace PR7971 {
123 struct S {
gPR7971::S124 void g() {
125 f(&g);
126 }
127 void f(bool (*)(int, char));
128 static bool g(int, char);
129 };
130 }
131
132 namespace PR8033 {
133 template <typename T1, typename T2> int f(T1 *, const T2 *); // expected-note {{candidate function [with T1 = const int, T2 = int]}}
134 template <typename T1, typename T2> int f(const T1 *, T2 *); // expected-note {{candidate function [with T1 = int, T2 = const int]}}
135 int (*p)(const int *, const int *) = f; // expected-error{{address of overloaded function 'f' is ambiguous}}
136 }
137
138 namespace PR8196 {
139 template <typename T> struct mcdata {
140 typedef int result_type;
141 };
142 template <class T>
143 typename mcdata<T>::result_type wrap_mean(mcdata<T> const&);
144 void add_property(double(*)(mcdata<double> const &)); // expected-note{{candidate function not viable: no overload of 'wrap_mean' matching}}
f()145 void f() {
146 add_property(&wrap_mean); // expected-error{{no matching function for call to 'add_property'}}
147 }
148 }
149
150 namespace PR7425 {
151 template<typename T>
foo()152 void foo()
153 {
154 }
155
156 struct B
157 {
158 template<typename T>
BPR7425::B159 B(const T&)
160 {
161 }
162 };
163
bar(const B & b)164 void bar(const B& b)
165 {
166 }
167
bar2(const B & b=foo<int>)168 void bar2(const B& b = foo<int>)
169 {
170 }
171
test(int argc,char ** argv)172 void test(int argc, char** argv)
173 {
174 bar(foo<int>);
175 bar2();
176 }
177 }
178
179 namespace test1 {
fun(int x)180 void fun(int x) {}
181
parameter_number()182 void parameter_number() {
183 void (*ptr1)(int, int) = &fun; // expected-error {{cannot initialize a variable of type 'void (*)(int, int)' with an rvalue of type 'void (*)(int)': different number of parameters (2 vs 1)}}
184 void (*ptr2)(int, int);
185 ptr2 = &fun; // expected-error {{assigning to 'void (*)(int, int)' from incompatible type 'void (*)(int)': different number of parameters (2 vs 1)}}
186 }
187
parameter_mismatch()188 void parameter_mismatch() {
189 void (*ptr1)(double) = &fun; // expected-error {{cannot initialize a variable of type 'void (*)(double)' with an rvalue of type 'void (*)(int)': type mismatch at 1st parameter ('double' vs 'int')}}
190 void (*ptr2)(double);
191 ptr2 = &fun; // expected-error {{assigning to 'void (*)(double)' from incompatible type 'void (*)(int)': type mismatch at 1st parameter ('double' vs 'int')}}
192 }
193
return_type_test()194 void return_type_test() {
195 int (*ptr1)(int) = &fun; // expected-error {{cannot initialize a variable of type 'int (*)(int)' with an rvalue of type 'void (*)(int)': different return type ('int' vs 'void')}}
196 int (*ptr2)(int);
197 ptr2 = &fun; // expected-error {{assigning to 'int (*)(int)' from incompatible type 'void (*)(int)': different return type ('int' vs 'void')}}
198 }
199
foo(double x,double y)200 int foo(double x, double y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
foo(int x,int y)201 int foo(int x, int y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
foo(double x)202 int foo(double x) {return 0;} // expected-note {{candidate function has type mismatch at 1st parameter (expected 'int' but has 'double')}}
foo(float x,float y)203 double foo(float x, float y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
foo(int x,float y)204 double foo(int x, float y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
foo(float x)205 double foo(float x) {return 0;} // expected-note {{candidate function has type mismatch at 1st parameter (expected 'int' but has 'float')}}
foo(int x)206 double foo(int x) {return 0;} // expected-note {{candidate function has different return type ('int' expected but has 'double')}}
207
208 int (*ptr)(int) = &foo; // expected-error {{address of overloaded function 'foo' does not match required type 'int (int)'}}
209
210 struct Qualifiers {
Ntest1::Qualifiers211 void N() {};
Ctest1::Qualifiers212 void C() const {};
Vtest1::Qualifiers213 void V() volatile {};
Rtest1::Qualifiers214 void R() __restrict {};
CVtest1::Qualifiers215 void CV() const volatile {};
CRtest1::Qualifiers216 void CR() const __restrict {};
VRtest1::Qualifiers217 void VR() volatile __restrict {};
CVRtest1::Qualifiers218 void CVR() const volatile __restrict {};
219 };
220
221
QualifierTest()222 void QualifierTest() {
223 void (Qualifiers::*X)();
224 X = &Qualifiers::C; // expected-error-re {{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} const': different qualifiers (none vs const)}}
225 X = &Qualifiers::V; // expected-error-re{{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} volatile': different qualifiers (none vs volatile)}}
226 X = &Qualifiers::R; // expected-error-re{{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} __restrict': different qualifiers (none vs restrict)}}
227 X = &Qualifiers::CV; // expected-error-re{{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} const volatile': different qualifiers (none vs const and volatile)}}
228 X = &Qualifiers::CR; // expected-error-re{{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} const __restrict': different qualifiers (none vs const and restrict)}}
229 X = &Qualifiers::VR; // expected-error-re{{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} volatile __restrict': different qualifiers (none vs volatile and restrict)}}
230 X = &Qualifiers::CVR; // expected-error-re{{assigning to 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' from incompatible type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}} const volatile __restrict': different qualifiers (none vs const, volatile, and restrict)}}
231 }
232
233 struct Dummy {
Ntest1::Dummy234 void N() {};
235 };
236
237 void (Qualifiers::*X)() = &Dummy::N; // expected-error-re{{cannot initialize a variable of type 'void (test1::Qualifiers::*)(){{( __attribute__\(\(thiscall\)\))?}}' with an rvalue of type 'void (test1::Dummy::*)(){{( __attribute__\(\(thiscall\)\))?}}': different classes ('test1::Qualifiers' vs 'test1::Dummy')}}
238 }
239
240 template <typename T> class PR16561 {
f()241 virtual bool f() { if (f) {} return false; } // expected-error {{reference to non-static member function must be called}}
242 };
243