From 98e65d9d921ec810bbae2233b80e865e76dd8502 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 6 Dec 2018 07:49:24 +0000
Subject: Prefer rb_check_arity when 0 or 1 arguments

Especially over checking argc then calling rb_scan_args just to
raise an ArgumentError.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66238 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 range.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

(limited to 'range.c')

diff --git a/range.c b/range.c
index 9661feb718..c30852e500 100644
--- a/range.c
+++ b/range.c
@@ -397,12 +397,7 @@ range_step(int argc, VALUE *argv, VALUE range)
 
     b = RANGE_BEG(range);
     e = RANGE_END(range);
-    if (argc == 0) {
-        step = INT2FIX(1);
-    }
-    else {
-        rb_scan_args(argc, argv, "01", &step);
-    }
+    step = (!rb_check_arity(argc, 0, 1) ? INT2FIX(1) : argv[0]);
 
     if (!rb_block_given_p()) {
         if (rb_obj_is_kind_of(b, rb_cNumeric) && (NIL_P(e) || rb_obj_is_kind_of(e, rb_cNumeric))) {
-- 
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