From: Bill Wendling <isanbard@gmail.com>
Date: Sat, 21 Feb 2009 01:07:26 +0000 (+0000)
Subject: Make sure we don't dereference the .end() of the container.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=8aa374b6290210ad86499e129e67dea066d94433;p=oota-llvm.git

Make sure we don't dereference the .end() of the container.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65211 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 82c15e7caf3..f4ada35e5fb 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -728,7 +728,8 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
   bool needsFrameMoves = (MMI && MMI->hasDebugInfo()) ||
                           !Fn->doesNotThrow() ||
                           UnwindTablesMandatory;
-  DebugLoc DL = MBBI->getDebugLoc();
+  DebugLoc DL = (MBBI != MBB.end()) ? MBBI->getDebugLoc() :
+    DebugLoc::getUnknownLoc();
 
   // Prepare for frame info.
   unsigned FrameLabelId = 0;