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re.c: consider the case of RMatch::regexp is nil

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Follow r49675, r57098 and r57110. Don't assume RMatch::regexp always
contains a valid Regexp instance; it will be Qnil if the MatchData is
created by rb_backref_set_string().  [ruby-core:78741] [Bug #13054]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57123 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
rhe 2016-12-20 07:32:23 +00:00
parent 44ba4fd362
commit dc2d359b70
2 changed files with 26 additions and 5 deletions
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22
test/ruby/test_regexp.rb
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@ -644,14 +644,30 @@ class TestRegexp < Test::Unit::TestCase
end
def test_match_without_regexp
# create a MatchData for each assertion because the internal state may change
test = proc {|&blk| "abc".sub("a", ""); blk.call($~) }
bug10877 = '[ruby-core:68209] [Bug #10877]'
"abc".sub("a", "")
assert_raise_with_message(IndexError, /foo/, bug10877) {$~["foo"]}
test.call {|m| assert_raise_with_message(IndexError, /foo/, bug10877) {m["foo"]} }
key = "\u{3042}"
[Encoding::UTF_8, Encoding::Shift_JIS, Encoding::EUC_JP].each do |enc|
idx = key.encode(enc)
assert_raise_with_message(IndexError, /#{idx}/, bug10877) {$~[idx]}
test.call {|m| assert_raise_with_message(IndexError, /#{idx}/, bug10877) {m[idx]} }
end
test.call {|m| assert_equal(/a/, m.regexp) }
test.call {|m| assert_equal("abc", m.string) }
test.call {|m| assert_equal(1, m.size) }
test.call {|m| assert_equal(0, m.begin(0)) }
test.call {|m| assert_equal(1, m.end(0)) }
test.call {|m| assert_equal([0, 1], m.offset(0)) }
test.call {|m| assert_equal([], m.captures) }
test.call {|m| assert_equal([], m.names) }
test.call {|m| assert_equal({}, m.named_captures) }
test.call {|m| assert_equal(/a/.match("abc"), m) }
test.call {|m| assert_equal(/a/.match("abc").hash, m.hash) }
test.call {|m| assert_equal("bc", m.post_match) }
test.call {|m| assert_equal("", m.pre_match) }
test.call {|m| assert_equal(["a", nil], m.values_at(0, 1)) }
end
def test_last_match