1// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++98 -verify -triple x86_64-apple-darwin %s
2enum E { // expected-note{{previous definition is here}}
3  Val1,
4  Val2
5};
6
7enum E; // expected-warning{{redeclaration of already-defined enum 'E' is a GNU extension}}
8
9int& enumerator_type(int);
10float& enumerator_type(E);
11
12void f() {
13  E e = Val1;
14  float& fr = enumerator_type(Val2);
15}
16
17// <rdar://problem/6502934>
18typedef enum Foo {
19  A = 0,
20  B = 1
21} Foo;
22
23void bar() {
24  Foo myvar = A;
25  myvar = B;
26}
27
28/// PR3688
29struct s1 {
30  enum e1 (*bar)(void); // expected-error{{ISO C++ forbids forward references to 'enum' types}}
31};
32
33enum e1 { YES, NO };
34
35static enum e1 badfunc(struct s1 *q) {
36  return q->bar();
37}
38
39enum e2; // expected-error{{ISO C++ forbids forward references to 'enum' types}}
40
41namespace test1 {
42  template <class A, class B> struct is_same { static const int value = -1; };
43  template <class A> struct is_same<A,A> { static const int value = 1; };
44
45  enum enum0 { v0 };
46  int test0[is_same<__typeof(+v0), int>::value];
47
48  enum enum1 { v1 = __INT_MAX__ };
49  int test1[is_same<__typeof(+v1), int>::value];
50
51  enum enum2 { v2 = __INT_MAX__ * 2U };
52  int test2[is_same<__typeof(+v2), unsigned int>::value];
53
54  enum enum3 { v3 = __LONG_MAX__ };
55  int test3[is_same<__typeof(+v3), long>::value];
56
57  enum enum4 { v4 = __LONG_MAX__ * 2UL };
58  int test4[is_same<__typeof(+v4), unsigned long>::value];
59}
60
61// PR6061
62namespace PR6061 {
63  struct A { enum { id }; };
64  struct B { enum { id }; };
65
66  struct C : public A, public B
67  {
68    enum { id };
69  };
70}
71
72namespace Conditional {
73  enum a { A }; a x(const enum a x) { return 1?x:A; }
74}
75
76namespace PR7051 {
77  enum E { e0 };
78  void f() {
79    E e;
80    e = 1; // expected-error{{assigning to 'PR7051::E' from incompatible type 'int'}}
81    e |= 1; // expected-error{{assigning to 'PR7051::E' from incompatible type 'int'}}
82  }
83}
84
85// PR7466
86enum { }; // expected-warning{{declaration does not declare anything}}
87typedef enum { }; // expected-warning{{typedef requires a name}}
88
89// PR7921
90enum PR7921E {
91    PR7921V = (PR7921E)(123) // expected-error {{expression is not an integral constant expression}}
92};
93
94void PR8089() {
95  enum E; // expected-error{{ISO C++ forbids forward references to 'enum' types}}
96  int a = (E)3; // expected-error{{cannot initialize a variable of type 'int' with an rvalue of type 'E'}}
97}
98