From d7c44059d489c8ac0d897024487b0d0b575f0d7f Mon Sep 17 00:00:00 2001
From: Zhongxing Xu <xuzhongxing@gmail.com>
Date: Mon, 27 Oct 2008 09:00:08 +0000
Subject: [PATCH] Only loc::MemRegionVal can be modified. This avoids crashing
 in RegionStore when a function pointer is used as an argument.

llvm-svn: 58233
---
 clang/lib/Analysis/GRSimpleVals.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Analysis/GRSimpleVals.cpp b/clang/lib/Analysis/GRSimpleVals.cpp
index a2a59f3e929b..48b25a71f9df 100644
--- a/clang/lib/Analysis/GRSimpleVals.cpp
+++ b/clang/lib/Analysis/GRSimpleVals.cpp
@@ -369,7 +369,7 @@ void GRSimpleVals::EvalCall(ExplodedNodeSet<GRState>& Dst,
 
     SVal V = StateMgr.GetSVal(St, *I);
     
-    if (isa<Loc>(V))
+    if (isa<loc::MemRegionVal>(V))
       St = StateMgr.SetSVal(St, cast<Loc>(V), UnknownVal());
     else if (isa<nonloc::LocAsInteger>(V))
       St = StateMgr.SetSVal(St, cast<nonloc::LocAsInteger>(V).getLoc(),