From 0544141545079017cf7e6ebbd5e34104e8b5f4c3 Mon Sep 17 00:00:00 2001
From: Houtan Bastani <houtan@dynare.org>
Date: Fri, 15 Mar 2019 12:05:52 +0100
Subject: [PATCH] pac: fix bug when checking for symb_ids

---
 src/ExprNode.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ExprNode.cc b/src/ExprNode.cc
index 562d3c61..fa86db50 100644
--- a/src/ExprNode.cc
+++ b/src/ExprNode.cc
@@ -5661,7 +5661,7 @@ BinaryOpNode::getPacAREC(int lhs_symb_id, int lhs_orig_symb_id,
                   vid = vn1->symb_id;
                   lag = vn1->lag;
                 }
-              if (pid > 0 && vid > 0)
+              if (pid >= 0 && vid >= 0)
                 {
                   int vidorig = vid;
                   while (datatree.symbol_table.isAuxiliaryVariable(vid))
-- 
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