1 // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
2 
3 enum class E1 {
4   Val1 = 1L
5 };
6 
7 enum struct E2 {
8   Val1 = '\0'
9 };
10 
11 E1 v1 = Val1; // expected-error{{undeclared identifier}}
12 E1 v2 = E1::Val1;
13 
14 static_assert(sizeof(E1) == sizeof(int), "bad size");
15 static_assert(sizeof(E1::Val1) == sizeof(int), "bad size");
16 static_assert(sizeof(E2) == sizeof(int), "bad size");
17 static_assert(sizeof(E2::Val1) == sizeof(int), "bad size");
18 
19 E1 v3 = E2::Val1; // expected-error{{cannot initialize a variable}}
20 int x1 = E1::Val1; // expected-error{{cannot initialize a variable}}
21 
22 enum E3 : char {
23   Val2 = 1
24 };
25 
26 E3 v4 = Val2;
27 E1 v5 = Val2; // expected-error{{cannot initialize a variable}}
28 
29 static_assert(sizeof(E3) == 1, "bad size");
30 
31 int x2 = Val2;
32 
33 int a1[Val2];
34 int a2[E1::Val1]; // expected-error{{size of array has non-integer type}}
35 
36 int* p1 = new int[Val2];
37 int* p2 = new int[E1::Val1]; // FIXME Expected-error{{must have integral}}
38 
39 enum class E4 {
40   e1 = -2147483648, // ok
41   e2 = 2147483647, // ok
42   e3 = 2147483648 // expected-error{{value is not representable}}
43 };
44 
45 enum class E5 {
46   e1 = 2147483647, // ok
47   e2 // expected-error{{2147483648 is not representable in the underlying}}
48 };
49 
50 enum class E6 : bool {
51     e1 = false, e2 = true,
52     e3 // expected-error{{2 is not representable in the underlying}}
53 };
54 
55 enum E7 : bool {
56     e1 = false, e2 = true,
57     e3 // expected-error{{2 is not representable in the underlying}}
58 };
59 
60 template <class T>
61 struct X {
62   enum E : T {
63     e1, e2,
64     e3 // expected-error{{2 is not representable in the underlying}}
65   };
66 };
67 
68 X<bool> X2; // expected-note{{in instantiation of template}}
69 
70 enum Incomplete1; // expected-error{{C++ forbids forward references}}
71 
72 enum Complete1 : int;
73 Complete1 complete1;
74 
75 enum class Complete2;
76 Complete2 complete2;
77 
78 // All the redeclarations below are done twice on purpose. Tests that the type
79 // of the declaration isn't changed.
80 
81 enum class Redeclare2; // expected-note{{previous use is here}} expected-note{{previous use is here}}
82 enum Redeclare2; // expected-error{{previously declared as scoped}}
83 enum Redeclare2; // expected-error{{previously declared as scoped}}
84 
85 enum Redeclare3 : int; // expected-note{{previous use is here}} expected-note{{previous use is here}}
86 enum Redeclare3; // expected-error{{previously declared with fixed underlying type}}
87 enum Redeclare3; // expected-error{{previously declared with fixed underlying type}}
88 
89 enum class Redeclare5;
90 enum class Redeclare5 : int; // ok
91 
92 enum Redeclare6 : int; // expected-note{{previous use is here}} expected-note{{previous use is here}}
93 enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}}
94 enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}}
95 
96 enum class Redeclare7; // expected-note{{previous use is here}} expected-note{{previous use is here}}
97 enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}}
98 enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}}
99 
100 enum : long {
101   long_enum_val = 10000
102 };
103 
104 enum : long x; // expected-error{{unnamed enumeration must be a definition}} \
105 // expected-warning{{declaration does not declare anything}}
106 
107 void PR9333() {
108   enum class scoped_enum { yes, no, maybe };
109   scoped_enum e = scoped_enum::yes;
110   if (e == scoped_enum::no) { }
111 }
112 
113 // <rdar://problem/9366066>
114 namespace rdar9366066 {
115   enum class X : unsigned { value };
116 
117   void f(X x) {
118     x % X::value; // expected-error{{invalid operands to binary expression ('rdar9366066::X' and 'rdar9366066::X')}}
119     x % 8; // expected-error{{invalid operands to binary expression ('rdar9366066::X' and 'int')}}
120   }
121 }
122 
123 // Part 1 of PR10264
124 namespace test5 {
125   namespace ns {
126     typedef unsigned Atype;
127     enum A : Atype;
128   }
129   enum ns::A : ns::Atype {
130     x, y, z
131   };
132 }
133 
134 // Part 2 of PR10264
135 namespace test6 {
136   enum A : unsigned;
137   struct A::a; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
138   enum A::b; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
139   int A::c; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
140   void A::d(); // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
141   void test() {
142     (void) A::e; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
143   }
144 }
145