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1 //RUN: %clang_cc1 -fsyntax-only -verify %s
2 
3 namespace PR16570 {
4   int f1(int, int);
5   int f2(const int, int);
6   int f3(int&, int);
7   int f4(const int&, int);
8 
good()9   void good() {
10     int(*g1)(int, int) = f1;
11     int(*g2)(const int, int) = f1;
12     int(*g3)(volatile int, int) = f1;
13     int(*g4)(int, int) = f2;
14     int(*g5)(const int, int) = f2;
15     int(*g6)(volatile int, int) = f2;
16     int(*g7)(int&, int) = f3;
17     int(*g8)(const int&, int) = f4;
18   }
19 
bad()20   void bad() {
21     void (*g1)(int, int) = f1;
22     // expected-error@-1 {{different return type ('void' vs 'int'}}
23     const int (*g2)(int, int) = f1;
24     // expected-error@-1 {{different return type ('const int' vs 'int')}}
25 
26     int (*g3)(char, int) = f1;
27     // expected-error@-1 {{type mismatch at 1st parameter ('char' vs 'int')}}
28     int (*g4)(int, char) = f1;
29     // expected-error@-1 {{type mismatch at 2nd parameter ('char' vs 'int')}}
30 
31     int (*g5)(int) = f1;
32     // expected-error@-1 {{different number of parameters (1 vs 2)}}
33 
34     int (*g6)(int, int, int) = f1;
35     // expected-error@-1 {{different number of parameters (3 vs 2)}}
36 
37     int (*g7)(const int, char) = f1;
38     // expected-error@-1 {{type mismatch at 2nd parameter ('char' vs 'int')}}
39     int (*g8)(int, char) = f2;
40     // expected-error@-1 {{type mismatch at 2nd parameter ('char' vs 'int')}}
41     int (*g9)(const int&, char) = f3;
42     // expected-error@-1 {{type mismatch at 1st parameter ('const int &' vs 'int &')}}
43     int (*g10)(int&, char) = f4;
44     // expected-error@-1 {{type mismatch at 1st parameter ('int &' vs 'const int &')}}
45   }
46 
47   typedef void (*F)(const char * __restrict__, int);
48   void g(const char *, unsigned);
49   F f = g;
50   // expected-error@-1 {{type mismatch at 2nd parameter ('int' vs 'unsigned int')}}
51 
52 }
53