From: Tanaka Akira <akr@...17n.org>
Date: 2004-12-15T00:00:04+09:00
Subject: [ruby-dev:25198] OpenSSL::Digest::Digest.new dumps core again

次のようにすると core を吐きます。

% ./ruby -ropenssl -e '
type = "a" * 0x20000
data = Object.new
class << data; self end.send(:define_method, :to_str) {
  type.replace ""
  "a"
}
OpenSSL::Digest::Digest.new(type, data)'
-e:8: [BUG] Segmentation fault
ruby 1.9.0 (2004-12-14) [i686-linux]

zsh: abort (core dumped)  ./ruby -ropenssl -e 
% gdb ruby core 
GNU gdb 6.1-debian
Copyright 2004 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-linux"...Using host libthread_db library "/lib/libthread_db.so.1".

Core was generated by `./ruby -ropenssl -e 
type = "a" * 0x20000
data = Object.new
class << data; self'.
Program terminated with signal 6, Aborted.
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libcrypt.so.1...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /home/akr/ruby/head-ruby/lib/ruby/1.9/i686-linux/openssl.so...done.
Loaded symbols for /home/akr/ruby/head-ruby/lib/ruby/1.9/i686-linux/openssl.so
Reading symbols from /usr/lib/i686/cmov/libssl.so.0.9.7...done.
Loaded symbols for /usr/lib/i686/cmov/libssl.so.0.9.7
Reading symbols from /usr/lib/i686/cmov/libcrypto.so.0.9.7...done.
Loaded symbols for /usr/lib/i686/cmov/libcrypto.so.0.9.7
#0  0x4009e6b1 in kill () from /lib/libc.so.6
(gdb) bt
#0  0x4009e6b1 in kill () from /lib/libc.so.6
#1  0x4009e435 in raise () from /lib/libc.so.6
#2  0x4009f978 in abort () from /lib/libc.so.6
#3  0x080d5776 in rb_bug (fmt=0x0) at error.c:214
#4  0x080b2742 in sigsegv (sig=11) at signal.c:446
#5  <signal handler called>
#6  0x402bc49c in lh_strhash () from /usr/lib/i686/cmov/libcrypto.so.0.9.7
(gdb) 
-- 
[田中 哲][たなか あきら][Tanaka Akira]