| 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 | |