From 8b40edc95b301269f1c0f43fdb94b3adc6b21845 Mon Sep 17 00:00:00 2001
From: Nathan Conrad <conradn@purdue.edu>
Date: Mon, 26 Mar 2018 19:08:58 -0400
Subject: .call instruction may have an empty argument list

---
 src/cuda-sim/ptx.y | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/cuda-sim/ptx.y b/src/cuda-sim/ptx.y
index e00aa4b..a66f508 100644
--- a/src/cuda-sim/ptx.y
+++ b/src/cuda-sim/ptx.y
@@ -513,7 +513,8 @@ compare_spec:EQ_OPTION { add_option(EQ_OPTION); }
 	| NAN_OPTION { add_option(NAN_OPTION); } 
 	;
 
-operand_list: operand
+operand_list: /* empty*/
+    | operand
 	| operand COMMA operand_list;
 
 operand: IDENTIFIER  { add_scalar_operand( $1 ); }
-- 
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