From: David Greene <greened@obbligato.org>
Date: Mon, 17 Dec 2007 17:39:51 +0000 (+0000)
Subject: Fix GLIBCXX_DEBUG errors.  Erase invalidates std::vector iterators
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=08d5fd9099d1106eb296c504ea40375a031e0eb0;p=oota-llvm.git

Fix GLIBCXX_DEBUG errors.  Erase invalidates std::vector iterators
passed the erased element.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45099 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/DCE.cpp b/lib/Transforms/Scalar/DCE.cpp
index 163c2b00611..9cad2362954 100644
--- a/lib/Transforms/Scalar/DCE.cpp
+++ b/lib/Transforms/Scalar/DCE.cpp
@@ -109,11 +109,10 @@ bool DCE::runOnFunction(Function &F) {
       I->eraseFromParent();
 
       // Remove the instruction from the worklist if it still exists in it.
-      for (std::vector<Instruction*>::iterator WI = WorkList.begin(),
-             E = WorkList.end(); WI != E; ++WI)
+      for (std::vector<Instruction*>::iterator WI = WorkList.begin();
+           WI != WorkList.end(); ++WI)
         if (*WI == I) {
-          WorkList.erase(WI);
-          --E;
+          WI = WorkList.erase(WI);
           --WI;
         }