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class.c: non-keyword hash class

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* class.c (rb_extract_keywords): keep the class of non-keyword
  elements hash as the original.  [ruby-core:77813] [Bug #12884]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57360 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-01-18 03:38:52 +00:00
parent 556e3da421
commit 13dffd8a2a
2 changed files with 15 additions and 0 deletions
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3
class.c
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@ -1841,6 +1841,9 @@ rb_extract_keywords(VALUE *orighash)
}
st_foreach(rb_hash_tbl_raw(hash), separate_symbol, (st_data_t)&parthash);
*orighash = parthash[1];
if (parthash[1] && RBASIC_CLASS(hash) != rb_cHash) {
RBASIC_SET_CLASS(parthash[1], RBASIC_CLASS(hash));
}
return parthash[0];
}

12
test/ruby/test_keyword.rb
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@ -629,4 +629,16 @@ class TestKeywordArguments < Test::Unit::TestCase
klass.new(d: 4)
end
end
def test_non_keyword_hash_subclass
bug12884 = '[ruby-core:77813] [Bug #12884]'
klass = EnvUtil.labeled_class("Child", Hash)
obj = Object.new
def obj.t(params = klass.new, d: nil); params; end
x = klass.new
x["foo"] = "bar"
result = obj.t(x)
assert_equal(x, result)
assert_kind_of(klass, result, bug12884)
end
end