Implement access checking for protected base classes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67887 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 4 deletions

diff --git a/lib/Sema/SemaAccess.cpp b/lib/Sema/SemaAccess.cpp
index cc212434b7..e65b050500 100644
--- a/lib/Sema/SemaAccess.cpp
+++ b/lib/Sema/SemaAccess.cpp
@@ -55,7 +55,7 @@ bool Sema::CheckBaseClassAccess(QualType Derived, QualType Base,
   
   const CXXBaseSpecifier *InacessibleBase = 0;
 
-  const CXXRecordDecl* CurrentClassDecl = 0;
+  CXXRecordDecl* CurrentClassDecl = 0;
   if (CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(getCurFunctionDecl()))
     CurrentClassDecl = MD->getParent();
 
@@ -79,9 +79,21 @@ bool Sema::CheckBaseClassAccess(QualType Derived, QualType Base,
         if (CurrentClassDecl != Element->Class)
           FoundInaccessibleBase = true;
         break;
-      case AS_protected:  
-        // FIXME: Implement
-        break;
+      case AS_protected:
+        // FIXME: Check if the current function/class is a friend.
+        if (!CurrentClassDecl) {
+          FoundInaccessibleBase = true;
+          break;
+        }
+        
+        if (CurrentClassDecl != Element->Class) {
+          QualType CurrentClassType = Context.getTypeDeclType(CurrentClassDecl);
+          QualType ClassType = Context.getTypeDeclType(Element->Class);
+          
+          if (!IsDerivedFrom(CurrentClassType, ClassType))
+            FoundInaccessibleBase = true;
+          break;
+        }
       }
       
       if (FoundInaccessibleBase) {