ruby-dev

高橋征義です。

Ruby 1.6.4が、正規表現と長い文字列とのマッチングで落ちます。

こんな感じのソースで再現します。

# sample
str = '<!--' + "hoge" * 10000 + '-->'
str =~ /<!--(.*)-->/


# 何をしてたかばればれ……。

backtraceはこんな感じです。


(gdb) run /home/maki/tmp/tmp.rb
Starting program: /usr/local/bin/ruby /home/maki/tmp/tmp.rb

Program received signal SIGSEGV, Segmentation fault.
0x5cc94 in ruby_re_match (bufp=0xd5100,
    string_arg=0xf0000
"<!--hogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehoge"...,
    size=40007, pos=0, regs=0x888b4) at regex.c:3818
3818              PUSH_FAILURE_POINT(p, d);
(gdb) bt
#0  0x5cc94 in ruby_re_match (bufp=0xd5100,
    string_arg=0xf0000
"<!--hogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehoge"...,
    size=40007, pos=0, regs=0x888b4) at regex.c:3818
#1  0x5c06d in ruby_re_search (bufp=0xd5100,
    string=0xf0000 "<!--hogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehogehoge"..., size=40007,
    startpos=0, range=40007, regs=0x888b4) at regex.c:3259
#2  0x50d66 in rb_reg_search (re=717780, str=717560, pos=0, reverse=0)
    at re.c:614
#3  0x5146b in rb_reg_match (re=717780, str=717560) at re.c:932
#4  0x12f69 in call_cfunc (func=0x51444 <rb_reg_match>, recv=717780, len=1,
    argc=1, argv=0xefbfd864) at eval.c:4198
#5  0x1347a in rb_call0 (klass=741400, recv=717780, id=331, argc=1,
    argv=0xefbfd864, body=0xb4eb0, nosuper=1) at eval.c:4331
#6  0x13b84 in rb_call (klass=741400, recv=717780, mid=331, argc=1,
    argv=0xefbfd864, scope=1) at eval.c:4544
#7  0x13d95 in rb_funcall (recv=717780, mid=331, n=1) at eval.c:4618
#8  0x1023e in rb_eval (self=769160, n=0xaf384) at eval.c:2906
#9  0xb893 in eval_node (self=769160, node=0xaf384) at eval.c:1059
#10 0xbc56 in ruby_run () at eval.c:1189
---Type <return> to continue, or q <return> to quit---
#11 0x1611 in main (argc=2, argv=0xefbfdb90, envp=0xefbfdb9c) at main.c:50


自分で追いかける気力はなかったので(_o_)、とりいそぎ報告まで。

高橋征義 (TAKAHASHI Masayoshi)       Email:maki@inac.co.jp

Thread

Prev Next

In This Thread

Prev Next

[#14185] ruby on Linux/m68k — akira yamada / やまだあきら <akira@...>

[#14195] exception at IO.popen failure — nobu.nakada@...

[#14196] fork() on MacOS — nobu.nakada@...

[#14206] undef_method :method_missing — Kenichi Komiya <kom@...1.accsnet.ne.jp>

[#14229] [BUG] segv on [str].pack("p") — Koji Arai <JCA02266@...>

[#14300] 名前空間を調べる効果的な方法はありますか？ — 西 啓一朗 <receiver@...>

[#14327] Re: [ruby-cvs] ruby/ext/socket: * string.c (rb_str_lstrip_bang): new method. — "U.Nakamura" <usa@...>

[#14338] setup.rb (Re: Common GUI framework) — Minero Aoki <aamine@...>

[#14382] [BUG] segv on regex matching with long string — TAKAHASHI Masayoshi <maki@...>

[#14390] [Patch] pp.rb and debug.rb — "NAKAMURA, Hiroshi" <nakahiro@...>

[#14406] typo in ruby 1.7 — Koji Arai <JCA02266@...>

[#14413] 1.7.1 2001-08-06: if true && /match/ — WATANABE Tetsuya <tetsu@...>

[#14430] Re: [ruby-cvs] ruby: * object.c (rb_obj_inspect): merge from 1.7: remove useless space. — Kazuhiro NISHIYAMA <zn@...>

[#14436] 1.7.1 2001-08-06: [BUG] unknown node type 0 — akira yamada / やまだあきら <akira@...>

[#14441] "foo".lstrip! should return `nil'. — Koji Arai <JCA02266@...>

[#14445] string.c rb_str_cmp() — TOYOFUKU Chikanobu <toyofuku@...>

[#14464] Ruby/Bsearch — akira yamada / やまだあきら <akira@...>

[#14465] Ruby/Bsearch — akira yamada / やまだあきら <akira@...>

[#14480] avoid compile warning of tcltklib with VC5 — "U.Nakamura" <usa@...>

[#14505] BUG: ruby 1.6.4 cannot use threads on Sparc (segv) — akira yamada / やまだあきら <akira@...>

[#14516] ext/digest/sha2/extconf.rb and try_run — WATANABE Hirofumi <eban@...>

[#14530] restore terminal mode even if readline interrupted. — Koji Arai <JCA02266@...>

[#14547] setuid/setgid — nobu.nakada@...

[#14552] read in IO#eof? — nobu.nakada@...

[#14560] — nobu.nakada@...

[#14565] (mswin32) dln_strerror() returns empty message — Tietew <tietew@...>

[#14572] noisy warnings of resolv.rb — Koji Arai <JCA02266@...>

[#14573] [PATCH] ruby-mode.el — Kenichi Komiya <kom@...1.accsnet.ne.jp>

[#14575] infinite loop on Dir.glob("*/**/*") — nobu.nakada@...

[#14576] glob_helper: merge from 1.7 — nobu.nakada@...

[#14577] option nodynamic — Daisuke Aoki <dai@...>

[#14584] Array#merge, Array#squeeze — "Akinori MUSHA" <knu@...>

[#14590] rb_load — OJ <oj@...7.com>

[#14595] SEGV at `$0 = "long long string"' — nobu.nakada@...

[#14601] $stdout への代入 ( 再考) — Koji Arai <JCA02266@...>

[#14603] patch for GNU/Hurd — akira yamada / やまだあきら <akira@...>

[ruby-dev:14382] [BUG] segv on regex matching with long string

Thread

In This Thread

[#14300] 名前空間を調べる効果的な方法はありますか？ — 西啓一朗 <receiver@...>

[#14445] string.c rb_str_cmp() — TOYOFUKU　Chikanobu <toyofuku@...>