From: Dan Gohman <gohman@apple.com>
Date: Thu, 14 Oct 2010 22:55:57 +0000 (+0000)
Subject: Tolerate a null parent pointer.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c05d8aa6db088b0f2e2d569d59d87de11cec9c29;p=oota-llvm.git

Tolerate a null parent pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116533 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/TypeBasedAliasAnalysis.cpp b/lib/Analysis/TypeBasedAliasAnalysis.cpp
index 546991ea0e4..7955ab753a0 100644
--- a/lib/Analysis/TypeBasedAliasAnalysis.cpp
+++ b/lib/Analysis/TypeBasedAliasAnalysis.cpp
@@ -52,7 +52,7 @@ namespace {
     TBAANode getParent() const {
       if (Node->getNumOperands() < 2)
         return TBAANode();
-      MDNode *P = dyn_cast<MDNode>(Node->getOperand(1));
+      MDNode *P = dyn_cast_or_null<MDNode>(Node->getOperand(1));
       if (!P)
         return TBAANode();
       // Ok, this node has a valid parent. Return it.