1// RUN: %clang_cc1 -std=c++11 -fexceptions -fcxx-exceptions -fsyntax-only -verify %s
2
3// Assignment of function pointers.
4
5struct A
6{
7};
8
9struct B1 : A
10{
11};
12
13struct B2 : A
14{
15};
16
17struct D : B1, B2
18{
19};
20
21struct P : private A
22{
23};
24
25// Some functions to play with below.
26void s1() throw();
27void s2() throw(int);
28void s3() throw(A);
29void s4() throw(B1);
30void s5() throw(D);
31void s6();
32void s7() throw(int, float);
33void (*s8())() throw(B1); // s8 returns a pointer to function with spec
34void s9(void (*)() throw(B1)); // s9 takes pointer to function with spec
35
36void s10() noexcept;
37void s11() noexcept(true);
38void s12() noexcept(false);
39
40void fnptrs()
41{
42  // Assignment and initialization of function pointers.
43  void (*t1)() throw() = &s1;    // valid
44  t1 = &s2;                      // expected-error {{not superset}} expected-error {{incompatible type}}
45  t1 = &s3;                      // expected-error {{not superset}} expected-error {{incompatible type}}
46  void (&t2)() throw() = s2;     // expected-error {{not superset}}
47  void (*t3)() throw(int) = &s2; // valid
48  void (*t4)() throw(A) = &s1;   // valid
49  t4 = &s3;                      // valid
50  t4 = &s4;                      // valid
51  t4 = &s5;                      // expected-error {{not superset}} expected-error {{incompatible type}}
52  void (*t5)() = &s1;            // valid
53  t5 = &s2;                      // valid
54  t5 = &s6;                      // valid
55  t5 = &s7;                      // valid
56  t1 = t3;                       // expected-error {{not superset}} expected-error {{incompatible type}}
57  t3 = t1;                       // valid
58  void (*t6)() throw(B1);
59  t6 = t4;                       // expected-error {{not superset}} expected-error {{incompatible type}}
60  t4 = t6;                       // valid
61  t5 = t1;                       // valid
62  t1 = t5;                       // expected-error {{not superset}} expected-error {{incompatible type}}
63
64  // return types and arguments must match exactly, no inheritance allowed
65  void (*(*t7)())() throw(B1) = &s8;       // valid
66  void (*(*t8)())() throw(A) = &s8;        // expected-error {{return types differ}}
67  void (*(*t9)())() throw(D) = &s8;        // expected-error {{return types differ}}
68  void (*t10)(void (*)() throw(B1)) = &s9; // valid
69  void (*t11)(void (*)() throw(A)) = &s9;  // expected-error {{argument types differ}}
70  void (*t12)(void (*)() throw(D)) = &s9;  // expected-error {{argument types differ}}
71}
72
73// Member function stuff
74
75struct Str1 { void f() throw(int); }; // expected-note {{previous declaration}}
76void Str1::f() // expected-warning {{missing exception specification}}
77{
78}
79
80void mfnptr()
81{
82  void (Str1::*pfn1)() throw(int) = &Str1::f; // valid
83  void (Str1::*pfn2)() = &Str1::f; // valid
84  void (Str1::*pfn3)() throw() = &Str1::f; // expected-error {{not superset}}
85}
86