Properly pop out of Objective-C method declarations when they are (ill-formedly)

found within contexts other than the translation unit.

llvm-svn: 110417

clang/lib/Sema/SemaDecl.cpp

@@ -343,8 +343,10 @@ DeclContext *Sema::getContainingDC(DeclContext *DC) {
     return DC;
   }
 
+  // ObjCMethodDecls are parsed (for some reason) outside the context
+  // of the class.
   if (isa<ObjCMethodDecl>(DC))
-    return Context.getTranslationUnitDecl();
+    return DC->getLexicalParent()->getLexicalParent();
 
   return DC->getLexicalParent();
 }

clang/test/SemaObjCXX/objc-decls-inside-namespace.mm

@@ -23,5 +23,10 @@ namespace C {
 @implementation A(C) //expected-error{{Objective-C declarations may only appear in global scope}}
 @end
 
+@interface B @end //expected-error{{Objective-C declarations may only appear in global scope}}
+@implementation B //expected-error{{Objective-C declarations may only appear in global scope}}
++ (void) foo {}
+@end
+
 }