From 0179055d2d146d495b93c148e431cf103b55208f Mon Sep 17 00:00:00 2001 From: naruse Date: Sun, 12 Mar 2017 14:18:02 +0000 Subject: merge revision(s) 57688,57689: [Backport #13242] rational.c: infinity in power * rational.c (nurat_expt): return Infinity due to overflow. [ruby-core:79686] [Bug #13242]: rational.c: infinity in power * rational.c (nurat_expt): return 0 due to overflow. [ruby-core:79686] [Bug #13242]: git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@57911 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/ruby/test_rational.rb | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'test/ruby') diff --git a/test/ruby/test_rational.rb b/test/ruby/test_rational.rb index e40de141b5..20989a572e 100644 --- a/test/ruby/test_rational.rb +++ b/test/ruby/test_rational.rb @@ -955,6 +955,14 @@ 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 + x = EnvUtil.suppress_warning {(1/4r)**40000000} + assert_equal 0, x, bug + end + def test_positive_p assert_predicate(1/2r, :positive?) assert_not_predicate(-1/2r, :positive?) -- cgit v1.2.3