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rational.c: segfault on Rational exponent

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* rational.c (read_num): fix segfault on Rational() with positive
  but less than the length of fractional part exponent.  should be
  negated to convert to divisor which is a reciprocal.
  [ruby-core:85783] [Bug #14547]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62555 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-02-24 02:08:36 +00:00
parent 623160916d
commit f954caea43
2 changed files with 18 additions and 8 deletions
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test/ruby/test_rational.rb
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@ -110,6 +110,10 @@ class Rational_Test < Test::Unit::TestCase
assert_equal(Rational(3),Rational('3'))
assert_equal(Rational(1),Rational('3.0','3.0'))
assert_equal(Rational(1),Rational('3/3','3/3'))
assert_equal(Rational(111, 10), Rational('1.11e+1'))
assert_equal(Rational(111, 10), Rational('1.11e1'))
assert_equal(Rational(111, 100), Rational('1.11e0'))
assert_equal(Rational(111, 1000), Rational('1.11e-1'))
assert_raise(TypeError){Rational(nil)}
assert_raise(ArgumentError){Rational('')}
assert_raise_with_message(ArgumentError, /\u{221a 2668}/) {