Feature #4204: IO#advise should raise error for unknown symbol
http://redmine.ruby-lang.org/issues/show/4204

ɼ???: Tomoyuki Chikanaga
?????????: Open, ?????: Normal
Target version: 1.9.3

r30299 ???????????? IO#advise ????????????????? Symbol ?????????????????????????????
対????????????? Symbol ???渡??????????????????????????????

????????????????????対?????????????????????????????????????????????????????????
???????????????????????????????? Symbol ???渡??????????????????????????????????????
IO#advise ???????????????????????????対?????????????????????? Symbol ?????????
?????????????????????????????????????????????????


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