From: Chris Lattner <sabre@nondot.org>
Date: Thu, 13 Jan 2005 23:26:48 +0000 (+0000)
Subject: Do not overrun iterators.  This fixes a 176.gcc crash
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=0b84c80c08a920b42458e8be00f8764d76ad00f1;p=oota-llvm.git

Do not overrun iterators.  This fixes a 176.gcc crash


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19541 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index b8ff3d4e7e7..e8f52d11573 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -2104,10 +2104,9 @@ static Value *EmitGEPOffset(User *GEP, Instruction &I, InstCombiner &IC) {
   uint64_t PtrSizeMask = ~0ULL;
   PtrSizeMask >>= 64-(TD.getPointerSize()*8);
 
-  ++GTI;   // Measure type stepping over.
   for (unsigned i = 1, e = GEP->getNumOperands(); i != e; ++i, ++GTI) {
     Value *Op = GEP->getOperand(i);
-    uint64_t Size = TD.getTypeSize(*GTI) & PtrSizeMask;
+    uint64_t Size = TD.getTypeSize(GTI.getIndexedType()) & PtrSizeMask;
     Constant *Scale = ConstantExpr::getCast(ConstantUInt::get(UIntPtrTy, Size),
                                             SIntPtrTy);
     if (Constant *OpC = dyn_cast<Constant>(Op)) {