From dd4306cdd8158f76f094fc699530311228536adb Mon Sep 17 00:00:00 2001
From: Rui Ueyama <ruiu@cs.stanford.edu>
Date: Mon, 30 Mar 2020 10:39:35 +0900
Subject: [PATCH] Allow empty macro arguments

---
 test/macro.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/macro.c b/test/macro.c
index c6508b1..d445ba5 100644
--- a/test/macro.c
+++ b/test/macro.c
@@ -213,6 +213,9 @@ int main() {
 #define M8(x,y) (x)*(y)
   assert(63, M8(3+4, 4+5), "M8(3+4, 4+5)");
 
+#define M8(x,y) x y
+  assert(9, M8(, 4+5), "M8(, 4+5)");
+
   printf("OK\n");
   return 0;
 }