1 files changed, 5 insertions, 5 deletions
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 8e14fcdd6b..36ab6ed44b 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -711,10 +711,13 @@ static bool IsDependentIdExpression(Sema &SemaRef, const CXXScopeSpec &SS) {
 static bool IsProvablyNotDerivedFrom(Sema &SemaRef,
                                      CXXRecordDecl *Record,
                             const llvm::SmallPtrSet<CXXRecordDecl*, 4> &Bases) {
-  Record = Record->getCanonicalDecl();
-  if (Bases.count(Record))
+  if (Bases.count(Record->getCanonicalDecl()))
     return false;
 
+  RecordDecl *RD = Record->getDefinition(SemaRef.Context);
+  if (!RD) return false;
+  Record = cast<CXXRecordDecl>(RD);
+
   for (CXXRecordDecl::base_class_iterator I = Record->bases_begin(),
          E = Record->bases_end(); I != E; ++I) {
     CanQualType BaseT = SemaRef.Context.getCanonicalType((*I).getType());
@@ -722,9 +725,6 @@ static bool IsProvablyNotDerivedFrom(Sema &SemaRef,
     if (!BaseRT) return false;
 
     CXXRecordDecl *BaseRecord = cast<CXXRecordDecl>(BaseRT->getDecl());
-    if (!BaseRecord->isDefinition())
-      return false;
-
     if (!IsProvablyNotDerivedFrom(SemaRef, BaseRecord, Bases))
       return false;
   }