From cdc4acd98d063628b03a80b9bde7eff3ce53c2d7 Mon Sep 17 00:00:00 2001
From: Tuowen Zhao <ztuowen@gmail.com>
Date: Mon, 10 Oct 2016 14:21:32 -0600
Subject: fixes null pointer for if

---
 lib/chillcg/src/CG_chillBuilder.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/chillcg/src/CG_chillBuilder.cc b/lib/chillcg/src/CG_chillBuilder.cc
index 045320f..185372a 100755
--- a/lib/chillcg/src/CG_chillBuilder.cc
+++ b/lib/chillcg/src/CG_chillBuilder.cc
@@ -25,8 +25,8 @@ namespace omega {
   // substitute at chill AST level
   chillAST_Node *substituteChill( const char *oldvar, CG_chillRepr *newvar, chillAST_Node *n, chillAST_Node *parent = NULL ) {
     if (n == NULL) {
-      CG_ERROR(" pointer n == NULL\n");
-      exit(-1);
+      CG_DEBUG_PRINT(" pointer n == NULL\n");
+      return NULL;
     }
     
     chillAST_Node *r = n;
-- 
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