From: Tanaka Akira <akr@...17n.org>
Date: 2005-05-19T11:53:20+09:00
Subject: [ruby-dev:26188] Re: IO.select dumps core

In article <874qd060f1.fsf@m17n.org>,
  Tanaka Akira <akr@m17n.org> writes:

> [ruby-talk:142505] で可能性に気がついたのですが、いま実験してみたとこ
> ろ次のようにすると core を吐きます。

> なお、プロンプトからわかるように root 権限が必要です。

NetBSD だと、root 権限がなくても core を吐けるようです。

netbsd20% unlimit descriptors                                        
netbsd20% limit                                                      
cputime         unlimited
filesize        unlimited
datasize        128MB
stacksize       2MB
coredumpsize    unlimited
memoryuse       116MB
memorylocked    38MB
maxproc         160
descriptors     1772
netbsd20% ./ruby -e 'IO.select(*(0...300).map { IO.pipe }.transpose)'
-e:1: [BUG] Segmentation fault
ruby 1.9.0 (2005-05-18) [i386-netbsdelf2.0]

zsh: abort (core dumped)  ./ruby -e 'IO.select(*(0...300).map { IO.pipe }.transpose)'
netbsd20% gdb ruby ruby.core
GNU gdb 5.3nb1
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386--netbsdelf"...
Core was generated by `ruby'.
Program terminated with signal 6, Aborted.
Reading symbols from /usr/libexec/ld.elf_so...done.
Loaded symbols for /usr/libexec/ld.elf_so
Reading symbols from /usr/lib/libcrypt.so.0...done.
Loaded symbols for /usr/lib/libcrypt.so.0
Reading symbols from /usr/lib/libm387.so.0...done.
Loaded symbols for /usr/lib/libm387.so.0
Reading symbols from /usr/lib/libm.so.0...done.
Loaded symbols for /usr/lib/libm.so.0
Reading symbols from /usr/lib/libc.so.12...done.
Loaded symbols for /usr/lib/libc.so.12
#0  0x4813afbb in kill () from /usr/lib/libc.so.12
(gdb) bt
#0  0x4813afbb in kill () from /usr/lib/libc.so.12
#1  0x481afbc3 in abort () from /usr/lib/libc.so.12
#2  0x080c8e64 in rb_bug (fmt=0x80e44b4 "Segmentation fault") at error.c:214
#3  0x080abc8c in sigsegv (sig=11) at signal.c:531
(gdb) 
-- 
[田中 哲][たなか あきら][Tanaka Akira]