From c171ca1efdbc5553f9ba94e9ce4e7d868f3cb298 Mon Sep 17 00:00:00 2001
From: mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 14 Sep 2017 02:53:54 +0000
Subject: ext/coverage/coverage.c: Fix the condition for non-experimental mode

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59875 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/coverage/coverage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'ext')

diff --git a/ext/coverage/coverage.c b/ext/coverage/coverage.c
index 91cfca8ff3..a286cf9222 100644
--- a/ext/coverage/coverage.c
+++ b/ext/coverage/coverage.c
@@ -30,7 +30,7 @@ rb_coverage_start(int argc, VALUE *argv, VALUE klass)
         if (!e || !*e) experimental_mode_enabled = 0;
     }
 
-    if (!experimental_mode_enabled)
+    if (!experimental_mode_enabled && argc != 0)
 	rb_error_arity(argc, 0, 0);
     rb_scan_args(argc, argv, "01", &opt);
 
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