clang/test/Sema/fixed-enum.c

   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')}}