From 4ae131e5da124bb5f7455133fefb1fa3b336192b Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 1 Aug 2004 09:51:42 +0000
Subject: [PATCH] Dereferencing end() is bad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15402 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/BranchFolding.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 0a6bd39ee6a..af2b7250173 100644
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -96,7 +96,7 @@ static void ReplaceUsesOfBlockWith(MachineBasicBlock *BB,
 
   // If BB falls through into Old, insert an unconditional branch to New.
   MachineFunction::iterator BBSucc = BB; ++BBSucc;
-  if (&*BBSucc == Old)
+  if (BBSucc != BB->getParent()->end() && &*BBSucc == Old)
     TII.insertGoto(*BB, *New);
 
   std::vector<MachineBasicBlock*> Succs(BB->succ_begin(), BB->succ_end());