From: Devang Patel <dpatel@apple.com>
Date: Mon, 30 Mar 2009 18:34:47 +0000 (+0000)
Subject: getEntryFor() may invalidate DenseMap iterator.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=6d9a2df4ecd7977588ac5e5ad080e22cce2f1c23;p=oota-llvm.git

getEntryFor() may invalidate DenseMap iterator.
Walking an invalidated iterator is not a good idea.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68047 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index a386a494fca..18c2b66505f 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -520,6 +520,7 @@ void AliasSetTracker::copyValue(Value *From, Value *To) {
   if (Entry.hasAliasSet()) return;    // Already in the tracker!
 
   // Add it to the alias set it aliases...
+  I = PointerMap.find(From);
   AliasSet *AS = I->second->getAliasSet(*this);
   AS->addPointer(*this, Entry, I->second->getSize(), true);
 }