# Trunk SEGV nkf?

**URL:** <https://www.ruby-forum.com/t/trunk-segv-nkf/151694>\
**Category:** Development\
**Created:** [October 24, 2008, 1:23pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694 "2008-10-24T13:23:43Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 24, 2008, 1:23pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/1 "2008-10-24T13:23:43Z")

</div>

e$BEOJUE/Li$G$9!#e(B

SEGV e$B$7$F$$$k$N$G$\*CN$i$;$7$^$9!#=EJ#$7$F$$$?$i$9$$$^$;e(B  
e$B$s$G$9!#e(B

ruby 1.9.0 (2008-10-24 revision 19913) [i686-linux]

e$B:F8=%9%/%j%W%H$G$9!#e(B  
e$B:F8=J}K!$O!“F~NO9T$,e(B 82 e$B9T$”$k$H:F8=$7$F$$$^$9!#e(B

* * *

#! /usr/local/bin/ruby -Ke

# -_- mode:ruby; coding:euc-jp -_-

# /tmp/j.rb

# created: October 23,2008 Thursday 06:09:10

# author: tetsu(WATANABE Tetsuya)

# $Id$

# usage:

require ‘nkf’

## while l = gets p $. l = NKF.nkf(’-e’, l) if l =~ /^a/ # j.rb:14 end end

e$B\<!$N\<B9T;~$O!"%-!\<%!\<%I$+$i2~9T$re(B 82 e$B2sBG$A9~$\_$^$7$?!#e(B

* * *

81

82  
j.rb:14: [BUG] Segmentation fault  
ruby 1.9.0 (2008-10-24 revision 19913) [i686-linux]

## – control frame ---------- c:0003 p:0060 s:0007 b:0007 l:000006 d:000006 TOP j.rb:14 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH :inherited c:0001 p:0000 s:0002 b:0002 l:000001 d:000001 TOP :17

## DBG\> : “j.rb:14:in `’” – backtrace of native function call (Use addr2line) – 0x80f7e67 0x811b242 0x811b26e 0x80b8788 0x4002d02d 0x400ff900 0x80efeb7 0x80efeff 0x80f6a34 0x80f16d9 0x80ec577 0x80f42a4 0x80f4610 0x805a499 0x805a4fd 0x8059316 0x400ecc1f 0x8059239

## zsh: 15680 abort (core dumped) ruby -Ke j.rb

gdb e$B$K$h$j%P%C%/%H%l!\<%9$G$9!#e(B

* * *

## #0 0x400ffc11 in kill () from /lib/i686/libc.so.6 #1 0x4002a341 in pthread\_kill () from /lib/i686/libpthread.so.0 #2 0x4002a6bb in raise () from /lib/i686/libpthread.so.0 #3 0x400ff8a4 in raise () from /lib/i686/libc.so.6 #4 0x40101008 in abort () from /lib/i686/libc.so.6 #5 0x0811b273 in rb\_bug () at error.c:226 #6 0x080b8788 in sigpipe (sig=11) at signal.c:545 #7 0x4002d02d in \_\_pthread\_clock\_settime () from /lib/i686/libpthread.so.0 #8 0x400ff900 in killpg () from /lib/i686/libc.so.6 #9 0x080efeb7 in search\_method (klass=1073937284, id=1073946176, klassp=0x0) at vm\_method.c:227 #10 0x080efeff in rb\_get\_method\_body (klass=143217460, id=332, idp=0xbffff1b8) at vm\_method.c:254 #11 0x080f6a34 in rb\_call0 (klass=143217460, recv=143217720, mid=332, argc=1, argv=0xbffff1f0, scope=1, self=6) at vm\_eval.c:210 #12 0x080f16d9 in rb\_funcall (recv=143217720, mid=332, n=1) at vm\_eval.c:260 #13 0x080ec577 in vm\_exec\_core (th=0x817aef0, initial=0) at insns.def:1981 #14 0x080f42a4 in vm\_exec (th=0x817aef0) at vm.c:1041 #15 0x080f4610 in rb\_iseq\_eval (iseqval=135781500) at vm.c:1246 #16 0x0805a499 in ruby\_exec\_node (n=0x817dc7c, file=0x0) at eval.c:205 #17 0x0805a4fd in ruby\_run\_node (n=0x817dc7c) at eval.c:233 #18 0x08059316 in main (argc=3, argv=0xbffff664) at main.c:35 #19 0x400ecc1f in \_\_libc\_start\_main () from /lib/i686/libc.so.6

e$B$h$m$7$/$\*4j$$$7$^$9!#e(B

19892 e$B$/$i$$$K5$$,IU$-$^$7$?!#%l%]!\<%H$,CY$/$J$j$9$$$^e(B  
e$B$;$s!#e(B

---

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 25, 2008, 7:05am UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/2 "2008-10-25T07:05:04Z")

</div>

e$BEOJUE/Li$G$9!#e(B

e$BDI2C\>pJs$K$J$j$^$9!#e(B

gdb e$B\>e$G\<B9T$7$Fe(B SEGV e$B$7$?\>l9g$N%P%C%/$H%l!\<%9$G$9!#e(Bcore  
e$B$h$je(B  
e$B\>pJs$,$h$5$=$&$G$9!#e(Btable e$B$,e(B 0  
e$B$J$N$,LdBj$N$h$&$K$\_$($^$9!#e(B

ruby 1.9.0 (2008-10-25 revision 19932) [i686-linux]

* * *

81  
82

Program received signal SIGSEGV, Segmentation fault.  
st\_lookup (table=0x0, key=332, value=0xbffff5d8) at st.c:284  
284 if (table-\>entries\_packed) {

#0 st\_lookup (table=0x0, key=332, value=0xbffff5d8) at st.c:284  
#1 0x080efe67 in search\_method (klass=143419800, id=332, klassp=0x0)  
at vm\_method.c:227  
#2 0x080efeaf in rb\_get\_method\_body (klass=143419800, id=332,  
idp=0xbffff638) at vm\_method.c:254  
#3 0x080f69e4 in rb\_call0 (klass=143419800, recv=143419960, mid=332,  
argc=1, argv=0xbffff670, scope=1, self=6) at vm\_eval.c:210  
#4 0x080f1689 in rb\_funcall (recv=143419960, mid=332, n=1) at  
vm\_eval.c:260  
#5 0x080ec527 in vm\_exec\_core (th=0x817b048, initial=0) at  
insns.def:1981  
#6 0x080f4254 in vm\_exec (th=0x817b048) at vm.c:1041  
#7 0x080f45c0 in rb\_iseq\_eval (iseqval=135780320) at vm.c:1246  
#8 0x0805a435 in ruby\_exec\_node (n=0x817d7e0, file=0x0) at eval.c:205  
#9 0x0805a499 in ruby\_run\_node (n=0x817d7e0) at eval.c:233  
#10 0x080592b2 in main (argc=5, argv=0xbffffae4) at main.c:35  
#11 0x400ecc1f in \_\_libc\_start\_main () from /lib/i686/libc.so.6

---

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 26, 2008, 2:19pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/3 "2008-10-26T14:19:39Z")

</div>

e$B@\>;3OB9-$G$9!#e(B

At Fri, 24 Oct 2008 20:23:15 +0900,  
WATANABE Tetsuya wrote:

> ## #! /usr/local/bin/ruby -Ke p $. l = NKF.nkf(’-e’, l) if l =~ /^a/ # j.rb:14 end end
> 
> e$B\<!$N\<B9T;~$O!"%-!\<%!\<%I$+$i2~9T$re(B 82 e$B2sBG$A9~$\_$^$7$?!#e(B

“–oc=eucJP-nkf"e$B$de(B”–oc=eucJP-ASCII"e$B$@$He(B[BUG]e$B$K$J$k$N$Ke(B  
"–oc=eucJP"e$B$@$HBg\>fIW$J$N$G!"e(Bnkfe$B$NCf$G2?$+$r2u$7$F$7$^$C$F$$$k$N$Oe(B  
e$B3N\<B$=$&$G$9!#e(B

% ruby-trunk -rnkf -e ‘while //=~NKF.nkf("–oc=eucJP-nkf","");end’  
-e:1: [BUG] Segmentation fault  
ruby 1.9.0 (2008-10-26 revision 19950) [i686-linux]

## – control frame ---------- c:0003 p:0025 s:0006 b:0006 l:000005 d:000005 TOP -e:1 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH :inherited c:0001 p:0000 s:0002 b:0002 l:000001 d:000001 TOP :17

DBG\> : “-e:1:in `’”  
– backtrace of native function call (Use addr2line) –  
(e$BN,e(B)  
% ruby-trunk -rnkf -e ‘while //=~NKF.nkf("–oc=eucJP-ASCII","");end’  
-e:1: [BUG] Segmentation fault  
ruby 1.9.0 (2008-10-26 revision 19950) [i686-linux]

– control frame ----------  
c:0003 p:0025 s:0006 b:0006 l:000005 d:000005 TOP -e:1  
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH :inherited  
c:0001 p:0000 s:0002 b:0002 l:000001 d:000001 TOP :17

---

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 26, 2008, 2:41pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/4 "2008-10-26T14:41:54Z")

</div>

e$BEOJUE/Li$G$9!#e(B

e$B@\>;3$5$s!“3NG’$”$j$,$H$&$4$6$$$^$9!#e(B

e$B$3$A$i$G$NDI2C\>pJs$H$7$Fe(B GC.stress = true e$B$G$O!"e(B  
e$B$9$00z$-5/$3$5$l$^$9!#e(B

nkf e$B$G2u$l$F!"e(BGC e$B$Ge(B core e$B$H$$$&$3$H$G$7$g$&$+!#e(B

2008/10/26 22:18 Kazuhiro NISHIYAMA [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$B@\>;3OB9-$G$9!#e(B

---

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 26, 2008, 4:07pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/5 "2008-10-26T16:07:57Z")

</div>

e$B1sF#$G$9!#e(B

2008/10/26 22:41 WATANABE Tetsuya [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$B$3$A$i$G$NDI2C\>pJs$H$7$Fe(B GC.stress = true e$B$G$O!"e(B  
> e$B$9$00z$-5/$3$5$l$^$9!#e(B

e$B$J$k$[$I!"e(Brb\_nkf\_convert e$B$Ge(B result  
e$B$,%9%?%C%/\>e$K$J$$$?$a!"e(BGC e$B$5$l$ke(B  
e$B$\_$?$$$G$9$M!#e(B  
e$B0J2\<$G\>I\>u$,\>C$($k$G$7$g$&$+!#e(B

# Index: ext/nkf/nkf.c

— ext/nkf/nkf.c (revision 19951)  
+++ ext/nkf/nkf.c (working copy)  
@@ -135,6 +135,8 @@  
static VALUE  
rb\_nkf\_convert(VALUE obj, VALUE opt, VALUE src)  
{

- volatile VALUE tmp;
- reinit();  
StringValue(opt);  
nkf\_split\_options(RSTRING\_PTR(opt));  
@@ -155,7 +157,7 @@  
StringValue(src);  
input = (unsigned char \*)RSTRING\_PTR(src);  
i\_len = RSTRING\_LEN(src);

- result = rb\_str\_new(0, i\_len\*3 + 10);

- tmp = result = rb\_str\_new(0, i\_len\*3 + 10);

---

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 26, 2008, 5:14pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/6 "2008-10-26T17:14:52Z")

</div>

e$BEOJUE/Li$G$9!#e(B

e$B1sF#$5$s!“$”$j$,$H$&$4$6$$$^$9!#e(B  
e$B\>I\>u$,\>C$($k$3$H$r3NG’$7$^$7$?!#e(B

e$B=u$+$j$^$9$G$9!#e(B

2008/10/27 0:06 Yusuke ENDOH [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$B1sF#$G$9!#e(B

---

<div class="post-metadata">

**Author:** ![WATANABE\_Tetsuya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/46a35a/32.png) [@WATANABE\_Tetsuya](https://www.ruby-forum.com/u/WATANABE_Tetsuya)\
**Post date:** [October 26, 2008, 5:42pm UTC](https://www.ruby-forum.com/t/trunk-segv-nkf/151694/7 "2008-10-26T17:42:28Z")

</div>

e$B@.@%$G$9!#e(B

Yusuke ENDOH wrote:

> — ext/nkf/nkf.c (revision 19951)  
> @@ -155,7 +157,7 @@  
> StringValue(src);  
> input = (unsigned char \*)RSTRING\_PTR(src);  
> i\_len = RSTRING\_LEN(src);
> 
> - result = rb\_str\_new(0, i\_len\*3 + 10);
> 
> - tmp = result = rb\_str\_new(0, i\_len\*3 + 10);

e$B$J$k$[$I!“e(BGC e$B$G$7$?$+!”$"$j$,$H$&$4$6$$$^$7$?!#e(B  
e$B\<j85$G2r7h$r3NG’$G$-$?$N$G!"%3%\_%C%H$7$F$\*$-$^$7$?!#e(B