1 // RUN: %clang_cc1 -x c++ %s -fblocks -fsyntax-only -Wcast-function-type -triple x86_64-- -verify
2 
3 int x(long);
4 
5 typedef int (f1)(long);
6 typedef int (f2)(void*);
7 typedef int (f3)(...);
8 typedef void (f4)(...);
9 typedef void (f5)(void);
10 typedef int (f6)(long, int);
11 typedef int (f7)(long,...);
12 typedef int (&f8)(long, int);
13 
14 f1 *a;
15 f2 *b;
16 f3 *c;
17 f4 *d;
18 f5 *e;
19 f6 *f;
20 f7 *g;
21 
22 struct S
23 {
24   void foo (int*);
25   void bar (int);
26 };
27 
28 typedef void (S::*mf)(int);
29 
30 void foo() {
31   a = (f1 *)x;
32   b = (f2 *)x; /* expected-warning {{cast from 'int (*)(long)' to 'f2 *' (aka 'int (*)(void *)') converts to incompatible function type}} */
33   b = reinterpret_cast<f2 *>(x); /* expected-warning {{cast from 'int (*)(long)' to 'f2 *' (aka 'int (*)(void *)') converts to incompatible function type}} */
34   c = (f3 *)x;
35   d = (f4 *)x; /* expected-warning {{cast from 'int (*)(long)' to 'f4 *' (aka 'void (*)(...)') converts to incompatible function type}} */
36   e = (f5 *)x;
37   f = (f6 *)x; /* expected-warning {{cast from 'int (*)(long)' to 'f6 *' (aka 'int (*)(long, int)') converts to incompatible function type}} */
38   g = (f7 *)x;
39 
40   mf p1 = (mf)&S::foo; /* expected-warning {{cast from 'void (S::*)(int *)' to 'mf' (aka 'void (S::*)(int)') converts to incompatible function type}} */
41 
42   f8 f2 = (f8)x; /* expected-warning {{cast from 'int (long)' to 'f8' (aka 'int (&)(long, int)') converts to incompatible function type}} */
43   (void)f2;
44 
45   int (^y)(long);
46   f = (f6 *)y; /* expected-warning {{cast from 'int (^)(long)' to 'f6 *' (aka 'int (*)(long, int)') converts to incompatible function type}} */
47 }
48