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 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