Suppress keyword argument warning from #step

* numeric.c (num_step): pass the extracted argument from keyword
  argument, not the last argument itself which should have been
  warned already.

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_numeric.rb b/test/ruby/test_numeric.rb
index f87abbb4a8..797fd209af 100644
--- a/test/ruby/test_numeric.rb
+++ b/test/ruby/test_numeric.rb
@@ -292,6 +292,14 @@ class TestNumeric < Test::Unit::TestCase
     assert_raise(ArgumentError, bug9811) { 1.step(10, 1, by: 11) {} }
     assert_raise(ArgumentError, bug9811) { 1.step(10, 1, by: 11).size }
 
+
+    e = assert_warn(/The last argument is used as the keyword parameter/) {
+      1.step(10, {by: "1"})
+    }
+    assert_warn('') {
+      assert_raise(ArgumentError) {e.size}
+    }
+
     assert_equal(bignum*2+1, (-bignum).step(bignum, 1).size)
     assert_equal(bignum*2, (-bignum).step(bignum-1, 1).size)