From 06010b2b05292e6557be75f609aa1295eeea68de Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 22 Feb 2017 23:28:26 +0000
Subject: rational.c: infinity in power

* rational.c (nurat_expt): return Infinity due to overflow.
  [ruby-core:79686] [Bug #13242]:

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57688 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_rational.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test')

diff --git a/test/ruby/test_rational.rb b/test/ruby/test_rational.rb
index 0a400edea2..c1e7d824d1 100644
--- a/test/ruby/test_rational.rb
+++ b/test/ruby/test_rational.rb
@@ -955,6 +955,12 @@ class Rational_Test < Test::Unit::TestCase
     assert_raise(ZeroDivisionError, bug5713) { Rational(0, 1) ** Rational(-2,3) }
   end
 
+  def test_power_overflow
+    bug = '[ruby-core:79686] [Bug #13242]: Infinity due to overflow'
+    x = EnvUtil.suppress_warning {4r**40000000}
+    assert_predicate x, :infinite?, bug
+  end
+
   def test_positive_p
     assert_predicate(1/2r, :positive?)
     assert_not_predicate(-1/2r, :positive?)
-- 
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