From 99057462aa001be4327078b5c80e5d3a67a01b3c Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Wed, 30 Apr 2008 21:31:12 +0000
Subject: [PATCH] Provide SizeOfAlignTypeExpr workaround in the static analyzer
 for taking the sizeof of a ObjCInterfaceType.

llvm-svn: 50499
---
 clang/lib/Analysis/GRExprEngine.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/clang/lib/Analysis/GRExprEngine.cpp b/clang/lib/Analysis/GRExprEngine.cpp
index 877bd09a289c..7506c80f5e73 100644
--- a/clang/lib/Analysis/GRExprEngine.cpp
+++ b/clang/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)