From e4d6670f6bed2d933664eff37e4dc73c0fa7c933 Mon Sep 17 00:00:00 2001
From: Duncan Sands <baldrick@free.fr>
Date: Mon, 10 May 2010 04:54:28 +0000
Subject: [PATCH] Add an assertion to catch attempts to access off the end of
 the array. Based on a patch by Javier Martinez.

llvm-svn: 103391
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index e9de6d56f9ac..000cdb44ff5e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5428,6 +5428,8 @@ const EVT *SDNode::getValueTypeList(EVT VT) {
     sys::SmartScopedLock<true> Lock(*VTMutex);
     return &(*EVTs->insert(VT).first);
   } else {
+    assert(VT.getSimpleVT().SimpleTy < MVT::LAST_VALUETYPE &&
+           "Value type out of range!");
     return &SimpleVTArray->VTs[VT.getSimpleVT().SimpleTy];
   }
 }