1 | // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++98 -verify -triple x86_64-apple-darwin %s |
2 | // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s |
3 | enum E { // expected-note{{previous definition is here}} |
4 | Val1, |
5 | Val2 |
6 | }; |
7 | |
8 | enum E; // expected-warning{{redeclaration of already-defined enum 'E' is a GNU extension}} |
9 | |
10 | int& enumerator_type(int); |
11 | float& enumerator_type(E); |
12 | |
13 | void f() { |
14 | E e = Val1; |
15 | float& fr = enumerator_type(Val2); |
16 | } |
17 | |
18 | // <rdar://problem/6502934> |
19 | typedef enum Foo { |
20 | A = 0, |
21 | B = 1 |
22 | } Foo; |
23 | |
24 | void bar() { |
25 | Foo myvar = A; |
26 | myvar = B; |
27 | } |
28 | |
29 | /// PR3688 |
30 | struct s1 { |
31 | enum e1 (*bar)(void); // expected-error{{ISO C++ forbids forward references to 'enum' types}} |
32 | }; |
33 | |
34 | enum e1 { YES, NO }; |
35 | |
36 | static enum e1 badfunc(struct s1 *q) { |
37 | return q->bar(); |
38 | } |
39 | |
40 | enum e2; // expected-error{{ISO C++ forbids forward references to 'enum' types}} |
41 | |
42 | namespace test1 { |
43 | template <class A, class B> struct is_same { static const int value = -1; }; |
44 | template <class A> struct is_same<A,A> { static const int value = 1; }; |
45 | |
46 | enum enum0 { v0 }; |
47 | int test0[is_same<__typeof(+v0), int>::value]; |
48 | |
49 | enum enum1 { v1 = __INT_MAX__ }; |
50 | int test1[is_same<__typeof(+v1), int>::value]; |
51 | |
52 | enum enum2 { v2 = __INT_MAX__ * 2U }; |
53 | int test2[is_same<__typeof(+v2), unsigned int>::value]; |
54 | |
55 | enum enum3 { v3 = __LONG_MAX__ }; |
56 | int test3[is_same<__typeof(+v3), long>::value]; |
57 | |
58 | enum enum4 { v4 = __LONG_MAX__ * 2UL }; |
59 | int test4[is_same<__typeof(+v4), unsigned long>::value]; |
60 | } |
61 | |
62 | // PR6061 |
63 | namespace PR6061 { |
64 | struct A { enum { id }; }; |
65 | struct B { enum { id }; }; |
66 | |
67 | struct C : public A, public B |
68 | { |
69 | enum { id }; |
70 | }; |
71 | } |
72 | |
73 | namespace Conditional { |
74 | enum a { A }; a x(const enum a x) { return 1?x:A; } |
75 | } |
76 | |
77 | namespace PR7051 { |
78 | enum E { e0 }; |
79 | void f() { |
80 | E e; |
81 | e = 1; // expected-error{{assigning to 'PR7051::E' from incompatible type 'int'}} |
82 | e |= 1; // expected-error{{assigning to 'PR7051::E' from incompatible type 'int'}} |
83 | } |
84 | } |
85 | |
86 | // PR7466 |
87 | enum { }; // expected-warning{{declaration does not declare anything}} |
88 | typedef enum { }; // expected-warning{{typedef requires a name}} |
89 | |
90 | // PR7921 |
91 | enum PR7921E { |
92 | PR7921V = (PR7921E)(123) |
93 | #if __cplusplus < 201103L |
94 | // expected-error@-2 {{expression is not an integral constant expression}} |
95 | #else |
96 | // expected-error@-4 {{must have integral or unscoped enumeration type}} |
97 | // FIXME: The above diagnostic isn't very good; we should instead complain about the type being incomplete. |
98 | #endif |
99 | }; |
100 | |
101 | void PR8089() { |
102 | enum E; // expected-error{{ISO C++ forbids forward references to 'enum' types}} |
103 | int a = (E)3; // expected-error{{cannot initialize a variable of type 'int' with an rvalue of type 'E'}} |
104 | } |
105 | |
106 | // This is accepted as a GNU extension. In C++98, there was no provision for |
107 | // expressions with UB to be non-constant. |
108 | enum { overflow = 123456 * 234567 }; |
109 | #if __cplusplus >= 201103L |
110 | // expected-warning@-2 {{not an integral constant expression}} |
111 | // expected-note@-3 {{value 28958703552 is outside the range of representable values}} |
112 | #else |
113 | // expected-warning@-5 {{overflow in expression; result is -1106067520 with type 'int'}} |
114 | #endif |
115 | |
116 | // PR28903 |
117 | struct PR28903 { |
118 | enum { |
119 | PR28903_A = (enum { // expected-error-re {{'PR28903::(anonymous enum at {{.*}})' cannot be defined in an enumeration}} |
120 | PR28903_B, |
121 | PR28903_C = PR28903_B |
122 | }) |
123 | }; |
124 | }; |
125 | |