r177930 - <rdar://problem/13459871> Allow forward declaration of enums with a fixed underlying type in Objective-C (as well as C++11).

[Douglas Gregor]

Author: dgregor
Date: Mon Mar 25 17:22:35 2013
New Revision: 177930

URL: http://llvm.org/viewvc/llvm-project?rev=177930&view=rev
Log:
<rdar://problem/13459871> Allow forward declaration of enums with a fixed underlying type in Objective-C (as well as C++11).


Modified:
    cfe/trunk/lib/Sema/SemaDecl.cpp
    cfe/trunk/test/SemaObjC/enum-fixed-type.m

Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=177930&r1=177929&r2=177930&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDecl.cpp Mon Mar 25 17:22:35 2013
@@ -9858,7 +9858,8 @@ CreateNewDecl:
     // If this is an undefined enum, warn.
     if (TUK != TUK_Definition && !Invalid) {
       TagDecl *Def;
-      if (getLangOpts().CPlusPlus11 && cast<EnumDecl>(New)->isFixed()) {
+      if ((getLangOpts().CPlusPlus11 || getLangOpts().ObjC2) &&
+          cast<EnumDecl>(New)->isFixed()) {
         // C++0x: 7.2p2: opaque-enum-declaration.
         // Conflicts are diagnosed above. Do nothing.
       }

Modified: cfe/trunk/test/SemaObjC/enum-fixed-type.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/enum-fixed-type.m?rev=177930&r1=177929&r2=177930&view=diff
==============================================================================
--- cfe/trunk/test/SemaObjC/enum-fixed-type.m (original)
+++ cfe/trunk/test/SemaObjC/enum-fixed-type.m Mon Mar 25 17:22:35 2013
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s
 
 #if !__has_feature(objc_fixed_enum)
 #  error Enumerations with a fixed underlying type are not supported
@@ -28,9 +28,9 @@ void test() {
 
 // <rdar://10381507>
 typedef enum : long { Foo } IntegerEnum;
-int arr[(sizeof(typeof(Foo)) == sizeof(typeof(IntegerEnum))) - 1];
-int arr1[(sizeof(typeof(Foo)) == sizeof(typeof(long))) - 1];
-int arr2[(sizeof(typeof(IntegerEnum)) == sizeof(typeof(long))) - 1];
+int arr[(sizeof(__typeof__(Foo)) == sizeof(__typeof__(IntegerEnum)))? 1 : -1];
+int arr1[(sizeof(__typeof__(Foo)) == sizeof(__typeof__(long)))? 1 : -1];
+int arr2[(sizeof(__typeof__(IntegerEnum)) == sizeof(__typeof__(long)))? 1 : -1];
 
 // <rdar://problem/10760113>
 typedef enum : long long { Bar = -1 } LongLongEnum;