1 // RUN: %clang_cc1 -Weverything -xc++ -std=c++11 -DCXX11 -verify %s
2 // RUN: %clang_cc1 -Weverything -xc++ -std=c++03 -DCXX03 -verify %s
3 // RUN: %clang_cc1 -Weverything -xobjective-c -DOBJC -verify %s
4 // RUN: %clang_cc1 -Weverything -std=c11 -xc -DC11 -verify %s
5 // RUN: %clang_cc1 -pedantic    -std=c11 -xc -DC11 -verify %s
6 // RUN: %clang_cc1 -Weverything -std=c11 -xc -fms-extensions -DMS -verify %s
test1(v2u v2ua,v2s v2sa,v2f v2fa)7 
8 enum X : int {e};
9 #if defined(CXX11)
10 // expected-warning@-2{{enumeration types with a fixed underlying type are incompatible with C++98}}
11 #elif defined(CXX03)
12 // expected-warning@-4{{enumeration types with a fixed underlying type are a C++11 extension}}
13 #elif defined(OBJC)
14 // No diagnostic
15 #elif defined(C11)
16 // expected-warning@-8{{enumeration types with a fixed underlying type are a Clang extension}}
17 #elif defined(MS)
18 // expected-warning@-10{{enumeration types with a fixed underlying type are a Microsoft extension}}
19 #endif
20 
21 // Don't warn about the forward declaration in any language mode.
22 enum Fwd : int;
23 enum Fwd : int { e2 };
24 #ifndef OBJC
25 // expected-warning@-3 {{enumeration types with a fixed underlying type}}
26 // expected-warning@-3 {{enumeration types with a fixed underlying type}}
27 #endif
28 
29 // Always error on the incompatible redeclaration.
30 enum BadFwd : int;
31 #ifndef OBJC
32 // expected-warning@-2 {{enumeration types with a fixed underlying type}}
33 #endif
34 // expected-note@-4 {{previous declaration is here}}
35 enum BadFwd : char { e3 };
36 #ifndef OBJC
37 // expected-warning@-2 {{enumeration types with a fixed underlying type}}
38 #endif
39 // expected-error@-4 {{enumeration redeclared with different underlying type 'char' (was 'int')}}
40