From 6d3b9226708e85813c9d43ef32f87ac149ea1d70 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 28 Jul 2010 17:15:36 +0000
Subject: [PATCH] Fix this code to avoid decrementing an iterator past the
 beginning of a std::vector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109597 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PIC16/PIC16.h | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/Target/PIC16/PIC16.h b/lib/Target/PIC16/PIC16.h
index cee55f4f260..08bb3e6f055 100644
--- a/lib/Target/PIC16/PIC16.h
+++ b/lib/Target/PIC16/PIC16.h
@@ -58,13 +58,10 @@ namespace PIC16CC {
     ESNames() {}
     public:
     ~ESNames() {
-      std::vector<char*>::iterator it = stk.end();
-      it--;
-      while(stk.end() != stk.begin())
+      while (!stk.empty())
         {
-        char* p = *it;
+        char* p = stk.back();
         delete [] p;
-        it--;
         stk.pop_back();
         }
     }