From c8e492d82fc3a7cd13e05dff8db75f0de5b02890 Mon Sep 17 00:00:00 2001
From: jbrodman <james.brodman@intel.com>
Date: Wed, 29 Apr 2015 18:30:21 -0400
Subject: [PATCH] Ptr Diff should ignore const

---
 expr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/expr.cpp b/expr.cpp
index 006e179d..e829f578 100644
--- a/expr.cpp
+++ b/expr.cpp
@@ -1461,7 +1461,7 @@ lEmitBinaryPointerArith(BinaryExpr::Op op, llvm::Value *value0,
         break;
     case BinaryExpr::Sub: {
         if (CastType<PointerType>(type1) != NULL) {
-            AssertPos(pos, Type::Equal(type0, type1));
+            AssertPos(pos, Type::EqualIgnoringConst(type0, type1));
 
             if (ptrType->IsSlice()) {
                 llvm::Value *p0 = ctx->ExtractInst(value0, 0);