From: Duncan Sands <baldrick@free.fr>
Date: Sun, 20 Jan 2008 16:51:46 +0000 (+0000)
Subject: Make sure the caller doesn't use freed memory.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=e003813e9613f41ff2c6a10cb1d3ae3a5b8eab1f;p=oota-llvm.git

Make sure the caller doesn't use freed memory.
Fixes PR1935.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46203 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 8d6c923ab13..5c572a640ed 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -401,8 +401,10 @@ static bool OptimizeNoopCopyExpression(CastInst *CI, const TargetLowering &TLI){
   }
   
   // If we removed all uses, nuke the cast.
-  if (CI->use_empty())
+  if (CI->use_empty()) {
     CI->eraseFromParent();
+    MadeChange = true;
+  }
   
   return MadeChange;
 }