1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Analysis/GRExprEngine.cpp b/lib/Analysis/GRExprEngine.cpp
index 877bd09a28..7506c80f5e 100644
--- a/lib/Analysis/GRExprEngine.cpp
+++ b/lib/Analysis/GRExprEngine.cpp
@@ -1432,6 +1432,12 @@ void GRExprEngine::VisitSizeOfAlignOfTypeExpr(SizeOfAlignOfTypeExpr* Ex,
     if (!T.getTypePtr()->isConstantSizeType())
       return;
     
+    // Some code tries to take the sizeof an ObjCInterfaceType, relying that
+    // the compiler has laid out its representation.  Just report Unknown
+    // for these.
+    if (T->isObjCInterfaceType())
+      return;
+    
     amt = 1;  // Handle sizeof(void)
     
     if (T != getContext().VoidTy)