# \[Bug #684\](Closed) io.read(nil, buf) で buf が変更されない

**URL:** <https://www.ruby-forum.com/t/bug-684-closed-io-read-nil-buf-b-g-b-buf-b-jq99-5-l-j-b/152048>\
**Category:** Development\
**Created:** [October 29, 2008, 1:45pm UTC](https://www.ruby-forum.com/t/bug-684-closed-io-read-nil-buf-b-g-b-buf-b-jq99-5-l-j-b/152048 "2008-10-29T13:45:53Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Usaku\_NAKAMURA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/cc9497/32.png) [@Usaku\_NAKAMURA](https://www.ruby-forum.com/u/Usaku_NAKAMURA)\
**Post date:** [October 29, 2008, 1:45pm UTC](https://www.ruby-forum.com/t/bug-684-closed-io-read-nil-buf-b-g-b-buf-b-jq99-5-l-j-b/152048/1 "2008-10-29T13:45:53Z")

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e$B%A%1%C%He(B #684 e$B$,99?7$5$l$^$7$?!#e(B (by Usaku NAKAMURA)

e$B%9%F!\<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B  
e$BC4Ev\<Te(B Nobuyoshi N.e$B$K%;%C%He(B

## r19943

[http://redmine.ruby-lang.org/issues/show/684](http://redmine.ruby-lang.org/issues/show/684)