1 // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
2 
3 enum E {};
4 
5 struct Z {};
6 typedef int Integer;
7 
8 struct X {
9   enum E : 1;
10   enum E : Z; // expected-error{{invalid underlying type}}
11   enum E2 : int;
12   enum E3 : Integer;
13 };
14 
15 struct Y {
16   enum E : int(2);
17   enum E : Z(); // expected-error{{integral constant expression must have integral or unscoped enumeration type, not 'Z'}}
18 };
19 
20 namespace pr18587 {
21 struct A {
22   enum class B {
23     C
24   };
25 };
26 const int C = 4;
27 struct D {
28   A::B : C;
29 };
30 }
31 
32 enum WithUnderlying : unsigned { wu_value };
33 struct WithUnderlyingBitfield {
34   WithUnderlying wu : 3;
35 } wu = { wu_value };
36 int want_unsigned(unsigned);
37 int want_unsigned(int) = delete;
38 int check_enum_bitfield_promotes_correctly = want_unsigned(wu.wu);
39