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sprintf.c: fix buffer overflow

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* sprintf.c (rb_str_format): fix buffer overflow, length must be
  greater than precision.  reported by William Bowling <will AT
  wbowling.info>.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-03-27 23:18:52 +00:00
parent d1e2d6a9c5
commit 9ae4c2d590
3 changed files with 11 additions and 1 deletions
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4
test/ruby/test_sprintf.rb
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@ -177,6 +177,10 @@ class TestSprintf < Test::Unit::TestCase
assert_equal("x"*10+" 1.0", sprintf("x"*10+"%8.1f", 1r), bug11766)
end
def test_rational_precision
assert_match(/\A0\.\d{600}\z/, sprintf("%.600f", 600**~60))
end
def test_hash
options = {:capture=>/\d+/}
assert_equal("with options {:capture=>/\\d+/}", sprintf("with options %p" % options))