ruby-dev

民斗です。

[Subject: [ruby-dev:7083] Re: [BUG] unpack('m')]
[Date: Tue, 8 Jun 1999 10:23:22 +0900  From:WATANABE Hirofumi]

> :String#unpack('m') して生成された文字列を C レベルで操作すると末尾に
> :ゴミがついていることがあります。Ruby レベルでは問題ありません。
> :
> :# STR2CSTR() したものって、'\0' 終端されていると仮定して良いんですよね？

> 変換後の文字列の中に '\0' が含まれることもあるわけで,
> '\0' で終端させてもあまり意味がないような気がします.
> 特に 'm' や 'u' の場合は.
> やはり長さを意識して処理したほうがいいのではないでしょうか?

ん〜、ま、そりゃそうなんですけど、標準添付の kconv でも '\0' 終端を
仮定しているみたいですし…。

> それと変換後のバイト数分だけ rb_str_new してるので, 
> そのまま '\0' を書き込むと memory leak することもあります.
> ('=' の padding がないとき)

いえ、rb_str_new() は、指定されたバイト数+1 の領域を確保して、最後の
バイトに '\0' を書くようになってます。

だから、文字列の終端の '\0' を期待してもいいんだろうと思ってました。

--
民斗 <tommy@valley.ne.jp>

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[#7064] How to put version number of shared library? — Ryo HAYASAKA <hayasaka@...21.u-aizu.ac.jp>

[#7071] [PATCH] AIX mod_ruby support — Katsuyuki Komatsu <komatsu@...>

[#7077] Re: Subscribe confirmation request (ruby developers list) — Satoshi KURODA <kuroda@...2.so-net.ne.jp>

[#7079] Marshal::load — Shugo Maeda <shugo@...>

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[#7081] [BUG] [PATCH?] /[^a] / === " あ " — WATANABE Hirofumi <eban@...>

[#7082] [BUG] unpack('m') — 民斗 <tommy@...>

[#7091] [BUG?] load in thread — keiju@... (Keiju ISHITSUKA)

[#7096] Re: Subscribe confirmation request (ruby developers list) — Kazutaka Ogaki <ogaki@...>

[#7098] pack("Z") — Koji Arai <JCA02266@...>

[#7099] Etc.group — Tadayoshi Funaba <tadf@...>

[#7102] Ruby 1.3.4-990611 — Yukihiro Matsumoto <matz@...>

[#7110] --enable-shared support — Katsuyuki Komatsu <komatsu@...>

[#7112] Re: Subscribe confirmation request (ruby developers list) — polygon <kiyose@...>

[#7117] File/Record I/O Libraries — ARIMA Yasuhiro <fit0298@...>

[#7122] return value from ||= for [] and accessor — nobu.nakada@...

[#7128] tracer — Masaki Fukushima <fukusima@...>

[#7132] EOF during Marshal.load — Masaki Fukushima <fukusima@...>

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[#7139] Re: tracer — keiju@... (Keiju ISHITSUKA)

[#7141] OS/2 patch for 1.3.4-990611 — kenn@...

[#7142] [BUG] String#each with long target — Minero Aoki <aamine@...>

[#7153] [patch] dbm.c, Solaris 2.6 — Ryo HAYASAKA <hayasaka@...21.u-aizu.ac.jp>

[#7154] [Patch] debug.rb raises NameError; undefined method `+' for nil — "NAKAMURA, Hiroshi" <nakahiro@...>

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[#7157] Dir.glob — Tadayoshi Funaba <tadf@...>

[#7167] [BUG] ruby_socket() in ext/socket/socket.c — WATANABE Hirofumi <watanabe@...>

[#7169] RE: What is rb_obj_call_init ? (Re: Ruby 1.3.4-99 0611) — 助田 雅紀 <masaki.suketa@...>

[#7172] [PATCH] io.c: getc does not set errno? — "NAKAMURA, Hiroshi" <nakahiro@...>

[#7173] [BUG] <<`HERE_DOC` — Koji Arai <JCA02266@...>

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[#7177] [BUG?] kcode for regexp — nobu.nakada@...

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[#7181] acknowledgement — matz@... (Yukihiro Matsumoto)

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[#7194] Re: ruby-1.3.x can't parse %Q{a{b}c} — Inaba Hiroto <inaba@...>

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[#7200] pack/unpack — Tadayoshi Funaba <tadf@...>

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[#7216] Re: acknowledgement — SHIROYAMA Takayuki <psi@...>

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[#7223] Ruby 1.3.4-990625 — Yukihiro Matsumoto <matz@...>

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[#7234] exit! — Tadayoshi Funaba <tadf@...>

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[#7237] patch for extmk.rb.nt — 助田 雅紀 <masaki.suketa@...>

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[#7250] typo? — Katsuyuki Komatsu <komatsu@...>

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[ruby-dev:7087] Re: [BUG] unpack('m')

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[#7169] RE: What is rb_obj_call_init ? (Re: Ruby 1.3.4-99 0611) — 助田　雅紀 <masaki.suketa@...>

[#7237] patch for extmk.rb.nt — 助田　雅紀 <masaki.suketa@...>

[#7260] ruby-gtk 0.19 patch for mswin32 — 助田　雅紀 <masaki.suketa@...>