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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-02-22 23:28:26 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-02-22 23:28:26 +0000
commit06010b2b05292e6557be75f609aa1295eeea68de (patch)
treee76c939853253e4f2dbba1b9e12193d56a1ca6d2 /test/ruby/test_rational.rb
parent3f6aeba69aeb092d4e64bd93b912f33adc284e1f (diff)
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
Diffstat (limited to 'test/ruby/test_rational.rb')
-rw-r--r--test/ruby/test_rational.rb6
1 files changed, 6 insertions, 0 deletions
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?)