From 16db3caba8b2ee105e8e792b2b0466fd60936cd2 Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Thu, 15 Feb 2007 18:34:36 +0000
Subject: [PATCH] For PR1202: Make sure we found an existing Alignment before
 overwriting it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34308 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/TargetData.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Target/TargetData.cpp b/lib/Target/TargetData.cpp
index ed9d84661da..41bc78a9923 100644
--- a/lib/Target/TargetData.cpp
+++ b/lib/Target/TargetData.cpp
@@ -245,7 +245,8 @@ TargetData::setAlignment(AlignTypeEnum align_type, unsigned char abi_align,
   std::pair<align_iterator, align_iterator> ins_result =
             std::equal_range(Alignments.begin(), Alignments.end(), elt);
   align_iterator I = ins_result.first;
-  if (I->AlignType == align_type && I->TypeBitWidth == bit_width) {
+  if (I != Alignments.end() && I->AlignType == align_type && 
+      I->TypeBitWidth == bit_width) {
     // Update the abi, preferred alignments.
     I->ABIAlign = abi_align;
     I->PrefAlign = pref_align;
-- 
2.34.1