# Ruby1.9 $B$G$N(B $SAFE==4 $B;~$N(B autoload $BF0:n(B

**URL:** <https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062>\
**Category:** Development\
**Created:** [April 7, 2008, 4:15pm UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062 "2008-04-07T16:15:33Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Hidetoshi\_NAGAI](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/49beb7/32.png) [@Hidetoshi\_NAGAI](https://www.ruby-forum.com/u/Hidetoshi_NAGAI)\
**Post date:** [April 7, 2008, 4:15pm UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062/1 "2008-04-07T16:15:33Z")

</div>

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: Hidetoshi NAGAI [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
Subject: [ruby-dev:34265] Re: Ruby1.9 e$B$G$Ne(B $SAFE==4  
e$B$G$NF0:n$N;EMMJQ99$K$D$$$Fe(B  
Date: Mon, 7 Apr 2008 10:39:29 +0900  
Message-ID: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

> # e$B$3$l$G\<!$N2]Bj$K?J$a$^$9!%e(B(^\_^;

e$B$H$$$&$o$1$G!$\<!$N2]Bj$G$9!%e(B(^\_^)  
Ruby 1.9 e$B$K$\*$$$F!$e(B$SAFE==4 e$B$N;~$Ke(B autoload  
e$B$,$&$^$/F/$$$F$/$l$^$;$s!%e(B  
autoload e$B$N@\_Dj$Oe(B $SAFE==0 e$B$N;~$K$J$5$l$F$$$F!$e(B  
e$B:G=i$K;2\>H$5$l$?$N$,e(B $SAFE==4 e$B$N;~$G$"$C$?$H$$$&%1!\<%9$G$9!%e(B  
Ruby 1.8 e$B$G$O!$$=$&$7$?%1!\<%9$G$be(B autoload  
e$B$,$&$^$/5!G=$7$^$9$,!$e(B  
Ruby 1.9 e$B$G$Oe(B “insecure\_operation at level 4 (SecurityError)”  
e$B$G$9!%e(B  
e$B$7$+$b%(%i!\<%a%C%;!\<%8$G$O!$e(Bautoload  
e$B$,F/$$$?;~$K\<B9TCf$N%a%=%C%I$,e(B  
SecurityError e$B$H$$$&$3$H$K$5$l$F$7$^$C$F$$$^$9!%e(B

$SAFE==0 e$B$G@\_Dj$7$?$b$N$rCY1dFI$_9~$_$7$F$$$k$@$1$H8@$($k$N$G!$e(B  
autoload  
e$B$K$h$kFI$_9~$_$r9T$C$F$b%;%-%e%j%F%#E\*$KLdBj$O$J$$$H;W$($^$9!%e(B

e$BNc$($P!$:#!$e(Bautoload e$BBP\>]$,e(B

## -----\<zzz.rb\>------------------ class ZZZ def hoge [:hoge, $SAFE] end end

e$B$G$"$C$?$H$7$^$9!%$3$N$H$-!$e(B

## -----\<xx1.rb\>------------------ autoload :ZZZ, ‘./zzz.rb’ module M; end p Thread.new{M.instance\_eval(‘ZZZ.new.hoge’)}.value

e$B$de(B

## -----\<xx2.rb\>------------------ autoload :ZZZ, ‘./zzz.rb’ module M; end p ZZZ.new.hoge p Thread.new{M.instance\_eval(‘$SAFE=4; ZZZ.new.hoge’)}.value

e$B$Oe(B (e$BEvA3e(B?) e$B%(%i!\<$J$/\<B9T$5$l$^$9$,!$e(B

## -----\<xx3.rb\>------------------ autoload :ZZZ, ‘./zzz.rb’ module M; end p Thread.new{M.instance\_eval(‘$SAFE=4; ZZZ.new.hoge’)}.value

e$B$Oe(B

* * *

## ./xx3.rb:3:in `instance_eval': Insecure operation at level 4 (SecurityError) from ./zzza.rb:3:in `instance\_eval’ from ./zzza.rb:3:in `block in ’

e$B$H$$$&$3$H$K$J$j$^$9!%e(B  
e$B%(%i!\<%a%C%;!\<%8$H$7$F$bG\<F@$7$E$i$$FbMF$@$H;W$$$^$9!%e(B

e$B%Q%C%A$J$7$NJs9p$N$_$G$9$_$^$;$s$,!$$h$m$7$/$\*4j$$CW$7$^$9!%e(B

---

<div class="post-metadata">

**Author:** ![Hidetoshi\_NAGAI](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/49beb7/32.png) [@Hidetoshi\_NAGAI](https://www.ruby-forum.com/u/Hidetoshi_NAGAI)\
**Post date:** [April 7, 2008, 8:47pm UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062/2 "2008-04-07T20:47:33Z")

</div>

e$B$J$+$@$G$9!#e(B

At Mon, 7 Apr 2008 23:15:04 +0900,  
Hidetoshi NAGAI wrote in [ruby-dev:34266]:

> Ruby 1.9 e$B$K$\*$$$F!$e(B$SAFE==4 e$B$N;~$Ke(B autoload e$B$,$&$^$/F/$$$F$/$l$^$;$s!%e(B  
> autoload e$B$N@\_Dj$Oe(B $SAFE==0 e$B$N;~$K$J$5$l$F$$$F!$e(B  
> e$B:G=i$K;2\>H$5$l$?$N$,e(B $SAFE==4 e$B$N;~$G$"$C$?$H$$$&%1!\<%9$G$9!%e(B  
> Ruby 1.8 e$B$G$O!$$=$&$7$?%1!\<%9$G$be(B autoload e$B$,$&$^$/5!G=$7$^$9$,!$e(B  
> Ruby 1.9 e$B$G$Oe(B “insecure\_operation at level 4 (SecurityError)” e$B$G$9!%e(B  
> e$B$7$+$b%(%i!\<%a%C%;!\<%8$G$O!$e(Bautoload e$B$,F/$$$?;~$K\<B9TCf$N%a%=%C%I$,e(B  
> SecurityError e$B$H$$$&$3$H$K$5$l$F$7$^$C$F$$$^$9!%e(B

autoloade$B$Ke(B"./“e$B$de(B”…/“e$B$G;O$^$kAjBP%Q%9$r;XDj$7$F$$$k$H!“e(Bautoload  
e$B$h$j@h$Ke(Brequiree$B$7$?$H$-$K%(%i!\<$K$J$k$H$$$&%P%0$b$”$C$?$N$G!”$^e(B  
e$B$H$a$FD\>$7$^$7$?!#e(B

---

<div class="post-metadata">

**Author:** ![Hidetoshi\_NAGAI](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/49beb7/32.png) [@Hidetoshi\_NAGAI](https://www.ruby-forum.com/u/Hidetoshi_NAGAI)\
**Post date:** [April 7, 2008, 11:10pm UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062/3 "2008-04-07T23:10:47Z")

</div>

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: Nobuyoshi N. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
Subject: [ruby-dev:34267] Re: Ruby1.9 e$B$G$Ne(B $SAFE==4 e$B;~$Ne(B  
autoload e$BF0:ne(B  
Date: Tue, 8 Apr 2008 03:44:46 +0900  
Message-ID: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

> autoloade$B$Ke(B"./“e$B$de(B”…/“e$B$G;O$^$kAjBP%Q%9$r;XDj$7$F$$$k$H!“e(Bautoload  
> e$B$h$j@h$Ke(Brequiree$B$7$?$H$-$K%(%i!\<$K$J$k$H$$$&%P%0$b$”$C$?$N$G!”$^e(B  
> e$B$H$a$FD\>$7$^$7$?!#e(B

e$B$"$j$,$H$&$4$6$$$^$9!%$G$9$,!$$^$@D\>$C$F$O$$$J$$$h$&$G$9!%e(B

* * *

autoload :ZZZ, File.join(Dir.pwd, ‘zzz.rb’)

module M; end

#p ZZZ.new.hoge ## \<— (\*)

## #p Thread.new{M.instance\_eval(‘$SAFE=4; ZZZ.new.hoge’)}.value #p Thread.new{$SAFE=4; M.instance\_eval(‘ZZZ.new.hoge’)}.value #p Thread.new{$SAFE=4; eval(‘ZZZ.new.hoge’)}.value #p Thread.new{eval(‘$SAFE=4; ZZZ.new.hoge’)}.value

e$B\>e5-$Ne(B (\*) e$B$N9T$rM-8z$K$7$F!$e(Bautoload  
e$B$r@h$KF/$+$;$J$$8B$j!$e(B  
e$B0J2\<$Ne(B 4 e$B9T$N$$$:$l$rM-8z$K$7$F$be(B ‘Insecure operation’  
e$B$H$J$j$^$9!%e(B

## e$B$D$$$G$K$G$9$,!$B?J,e(B Revision: 15915 e$B$N=$@5$N7k2L$K$h$j!$e(B

$ /usr/local/bin/ruby19 ./ext/tk/sample/tkhello.rb  
/usr/local/lib/ruby/1.9.0/tk.rb:2344:in `find': unknown encoding name - binary (ArgumentError) from /usr/local/lib/ruby/1.9.0/tk.rb:2344:in `module:Encoding’  
from /usr/local/lib/ruby/1.9.0/tk.rb:2328:in `<module:Tk>' from /usr/local/lib/ruby/1.9.0/tk.rb:2327:in `\<top  
(required)\>’  
from ./ext/tk/sample/tkhello.rb:1:in `require' from ./ext/tk/sample/tkhello.rb:1:in `’

---

<div class="post-metadata">

**Author:** ![Hidetoshi\_NAGAI](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/49beb7/32.png) [@Hidetoshi\_NAGAI](https://www.ruby-forum.com/u/Hidetoshi_NAGAI)\
**Post date:** [April 8, 2008, 4:02am UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062/4 "2008-04-08T04:02:47Z")

</div>

e$B$J$+$@$G$9!#e(B

At Tue, 8 Apr 2008 06:10:24 +0900,  
Hidetoshi NAGAI wrote in [ruby-dev:34268]:

> ## #p Thread.new{$SAFE=4; M.instance\_eval(‘ZZZ.new.hoge’)}.value #p Thread.new{$SAFE=4; eval(‘ZZZ.new.hoge’)}.value #p Thread.new{eval(’$SAFE=4; ZZZ.new.hoge’)}.value
> 
> e$B\>e5-$Ne(B (\*) e$B$N9T$rM-8z$K$7$F!$e(Bautoload e$B$r@h$KF/$+$;$J$$8B$j!$e(B  
> e$B0J2\<$Ne(B 4 e$B9T$N$$$:$l$rM-8z$K$7$F$be(B ‘Insecure operation’ e$B$H$J$j$^$9!%e(B

r15921e$B$Ge(Bbootstraptest/test\_autoload.rbe$B$KDI2C$7$F$\*$-$^$7$?$,!"DL$Ce(B  
e$B$F$7$^$C$F$$$k$h$&$J5$$,$7$^$9!#%F%9%H$,$^$:$$e(B?

> ## e$B$D$$$G$K$G$9$,!$B?J,e(B Revision: 15915 e$B$N=$@5$N7k2L$K$h$j!$e(B
> 
> ## $ /usr/local/bin/ruby19 ./ext/tk/sample/tkhello.rb /usr/local/lib/ruby/1.9.0/tk.rb:2344:in `find’: unknown encoding name - binary (ArgumentError)
> 
> e$B$J$I$H$$$&%(%i!\<$r=P$9$h$&$K$J$j$^$7$?!%e(B  
> e$B860x$O$3$l$+$iD4$Y$h$&$H;W$$$^$9$,!$e(B  
> e$B?4Ev$?$j$,$"$j$^$7$?$i65$($F$$$?$@$1$^$9$H=u$+$j$^$9!%e(B

enc/prelude.rbe$B$K=q$$$F$"$k%i%$%V%i%jL\>$,4V0c$C$F$$$^$7$?!#e(B

---

<div class="post-metadata">

**Author:** ![Hidetoshi\_NAGAI](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/49beb7/32.png) [@Hidetoshi\_NAGAI](https://www.ruby-forum.com/u/Hidetoshi_NAGAI)\
**Post date:** [April 8, 2008, 10:15am UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062/5 "2008-04-08T10:15:00Z")

</div>

e$B$J$+$@$G$9!#e(B

At Tue, 8 Apr 2008 16:09:32 +0900,  
Hidetoshi NAGAI wrote in [ruby-dev:34270]:

> > r15921e$B$Ge(Bbootstraptest/test\_autoload.rbe$B$KDI2C$7$F$\*$-$^$7$?$,!"DL$Ce(B  
> > e$B$F$7$^$C$F$$$k$h$&$J5$$,$7$^$9!#%F%9%H$,$^$:$$e(B?
> 
> r15927 e$B$GD\>$C$F$$$k$3$H$r3NG’$7$^$7$?!%e(B  
> e$B\>$7$/3NG’$7$F$O$$$^$;$s$,!$$-$C$He(B r15923 e$B$N$\*$+$2$J$N$G$7$g$&$M!%e(B

e$B\<j85$Ge(Br15921e$B$GDL$C$F$7$^$C$F$$$?$N$O!"e(Bautoloade$B$be(B-re$B%\*%W%7%g%s$HF1e(B  
e$B$8$/e(BKernel#requiree$B$r7PM3$9$k$h$&$K$7$F$$$?$;$$$G$7$?!#$3$l$O$3$le(B  
e$B$GG:$^$7$$$s$G$9$1$I$M!#e(B

---

<div class="post-metadata">

**Author:** ![Hidetoshi\_NAGAI](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/49beb7/32.png) [@Hidetoshi\_NAGAI](https://www.ruby-forum.com/u/Hidetoshi_NAGAI)\
**Post date:** [April 8, 2008, 9:09am UTC](https://www.ruby-forum.com/t/ruby1-9-b-g-n-b-safe-4-b-n-b-autoload-bf0-n-b/134062/6 "2008-04-08T09:09:58Z")

</div>

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: Nobuyoshi N. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
Subject: [ruby-dev:34269] Re: Ruby1.9 e$B$G$Ne(B $SAFE==4 e$B;~$Ne(B  
autoload e$BF0:ne(B  
Date: Tue, 8 Apr 2008 11:02:13 +0900  
Message-ID: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

> r15921e$B$Ge(Bbootstraptest/test\_autoload.rbe$B$KDI2C$7$F$\*$-$^$7$?$,!"DL$Ce(B  
> e$B$F$7$^$C$F$$$k$h$&$J5$$,$7$^$9!#%F%9%H$,$^$:$$e(B?

r15927 e$B$GD\>$C$F$$$k$3$H$r3NG’$7$^$7$?!%e(B  
e$B\>$7$/3NG’$7$F$O$$$^$;$s$,!$$-$C$He(B r15923  
e$B$N$\*$+$2$J$N$G$7$g$&$M!%e(B

> enc/prelude.rbe$B$K=q$$$F$“$k%i%$%V%i%jL\>$,4V0c$C$F$$$^$7$?!#e(B  
> e$B$3$A$i$bF1$8$/D\>$C$F$$$k$3$H$r3NG’$7$^$7$?!%e(B  
> e$B$”$j$,$H$&$4$6$$$^$7$?!%e(B