From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Fri, 17 Aug 2012 21:42:44 +0000 (+0000)
Subject: Fix undefined behavior (binding a reference to a dereferenced null pointer) if
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1cec7a05ee41725ec97b41608fe16d58c8c5b103;p=oota-llvm.git

Fix undefined behavior (binding a reference to a dereferenced null pointer) if
SSAUpdater was created and destroyed without being initialized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162137 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/SSAUpdater.cpp b/lib/Transforms/Utils/SSAUpdater.cpp
index e568a616b6f..72d4199a2a6 100644
--- a/lib/Transforms/Utils/SSAUpdater.cpp
+++ b/lib/Transforms/Utils/SSAUpdater.cpp
@@ -39,7 +39,7 @@ SSAUpdater::SSAUpdater(SmallVectorImpl<PHINode*> *NewPHI)
   : AV(0), ProtoType(0), ProtoName(), InsertedPHIs(NewPHI) {}
 
 SSAUpdater::~SSAUpdater() {
-  delete &getAvailableVals(AV);
+  delete static_cast<AvailableValsTy*>(AV);
 }
 
 /// Initialize - Reset this object to get ready for a new set of SSA