[ruby-dev:34859] SEGV 2008-05-27 revision 16652

渡辺哲也です。

ruby 1.9.0 (2008-05-27 revision 16652) [i686-linux]

です。

SEGV で core します。

スクリプトについては、変数 l に代入しないと起きなかったり、NKF.nkf の
戻り値を変数に入れない場合にも起きなかったりしています。

入力データの j.txt は、一行の ASCII 文字で起きました。


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$ ruby j.rb j.txt
j.rb:8: [BUG] Segmentation fault
ruby 1.9.0 (2008-05-27 revision 16652) [i686-linux]

-- stack frame ------------
0000 (0x40212008): 00000004
0001 (0x4021200c): 00000001
0002 (0x40212010): 00000004
0003 (0x40212014): 00000001
0004 (0x40212018): 081611bc
0005 (0x4021201c): 081611a8
0006 (0x40212020): 00000001 <- lfp <- dfp
0007 (0x40212024): 08161180 <- bp
0008 (0x40212028): 08162508
0009 (0x4021202c): 081dbde0
-- control frame ----------
c:0003 p:0046 s:0010 b:0007 l:000006 d:000006 TOP    j.rb:8
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH :private_class_method
c:0001 p:0000 s:0002 b:0002 l:000001 d:000001 TOP    <dummy toplevel>:16
---------------------------
DBG> : "j.rb:8:in `<main>'"
-- backtrace of native function call (Use addr2line) --
0x80dd151
0x80fca01
0x80fca35
0x80b0672
0x4002d02d
0x400ff900
0x80d2670
0x80d26a8
0x80d279a
0x80d7a67
0x80d990a
0x80d9da7
0x8059dee
0x8059e6b
0x8058b77
0x400ecc1f
0x8058a99
-------------------------------------------------------
zsh: 26690 abort (core dumped)  ruby j.rb j.txt
------------------------------


------------------------------
$ cat j.rb
#! /usr/local/bin/ruby
# -*- mode:ruby; coding:euc-jp -*-
# /tmp/j.rb

require 'nkf'

l = gets
l = NKF.nkf('-e', l).sub(/a/, '')
------------------------------


------------------------------
$ gdb =ruby core.26690 
(gdb) bt
#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  0x080fca3a in rb_compile_bug (file=0x8128ae6 "Segmentation fault", line=82080, fmt=0x4002fb84 "\204\352") at error.c:226
#6  0x080b0672 in sigpipe (sig=11) at signal.c:551
#7  0x4002d02d in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#8  0x400ff900 in killpg () from /lib/i686/libc.so.6
#9  0x080d2670 in search_method (klass=1073937284, id=1073946176, klassp=0x0) at vm_method.c:230
#10 0x080d26a8 in rb_get_method_body (klass=135663960, id=2104, idp=0x0) at vm_method.c:254
#11 0x080d279a in rb_method_node (klass=135663960, id=6) at vm_method.c:298
#12 0x080d7a67 in vm_eval (th=0x8160af0, initial=0) at vm_insnhelper.c:1116
#13 0x080d990a in vm_eval_body (th=0x8160af0) at vm.c:1022
#14 0x080d9da7 in rb_iseq_eval (iseqval=135668740) at vm.c:1226
#15 0x08059dee in ruby_exec_node (n=0x8162404, file=0x0) at eval.c:221
#16 0x08059e6b in ruby_run_node (n=0x8162404) at eval.c:249
#17 0x08058b77 in main (argc=3, argv=0xbffffaf4, envp=0xbffffb04) at main.c:35
#18 0x400ecc1f in __libc_start_main () from /lib/i686/libc.so.6
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