[ruby-dev:24290] Array#& dumps core

次のようにすると core を吐きます。

% ./ruby -e '
0.upto(99) {|n|
  a = (0...100).map {|i| [i] }
  b = (0...100).map {|i| [i] }
  class << (a[n]); self end.__send__(:define_method, :hash) {
    a.clear; a.compact!
    super
  }
  (a & b).inspect
}
'
-e:9: [BUG] Segmentation fault
ruby 1.8.2 (2004-09-17) [i686-linux]

zsh: abort (core dumped)  ./ruby -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 -e 
0.upto(99) {|n|
  a = (0...100).map {|i| [i] }
  b = (0...100).map {'.
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
#0  0x4009e721 in kill () from /lib/libc.so.6
(gdb) bt
#0  0x4009e721 in kill () from /lib/libc.so.6
#1  0x4009e4c5 in raise () from /lib/libc.so.6
#2  0x4009f9e8 in abort () from /lib/libc.so.6
#3  0x080caf66 in rb_bug (fmt=0x0) at error.c:214
#4  0x080aafa2 in sigsegv (sig=11) at signal.c:446
#5  <signal handler called>
#6  0x080526f8 in search_method (klass=137, id=3169, origin=0xbfffdc04)
    at eval.c:380
#7  0x08052759 in rb_get_method_body (klassp=0xbfffdc60, idp=0xbfffdc44, 
    noexp=0xbfffdc48) at eval.c:401
#8  0x0805c69a in rb_call (klass=137, recv=135514640, mid=3169, argc=0, 
    argv=0x0, scope=1) at eval.c:5706
#9  0x0805ca71 in rb_funcall (recv=135514640, mid=0, n=0) at ruby.h:631
#10 0x08082e36 in rb_inspect (obj=0) at object.c:371
#11 0x080bf1b1 in inspect_ary (ary=1075547176) at array.c:1420
#12 0x080bef28 in inspect_call (arg=0xbfffdc60) at array.c:1339
#13 0x0805b859 in rb_ensure (b_proc=0x80bef10 <inspect_call>, 
    data1=3221216752, e_proc=0x80bf000 <inspect_ensure>, data2=1075547176)
    at eval.c:5184
#14 0x080bf0bf in rb_protect_inspect (func=0x80bf110 <inspect_ary>, 
    obj=1075547176, arg=0) at array.c:1396
#15 0x080bf266 in rb_ary_inspect (ary=1075547176) at array.c:1443
#16 0x08067d61 in call_cfunc (func=0x80bf210 <rb_ary_inspect>, 
    recv=1075547176, len=-1073750944, argc=135199712, argv=0x0) at eval.c:5378
#17 0x0805bef2 in rb_call0 (klass=1075647856, recv=1075547176, id=3169, oid=0, 
    argc=0, argv=0x0, body=0x401d146c, nosuper=0) at eval.c:5509
#18 0x0805c748 in rb_call (klass=1075647856, recv=1075547176, mid=3169, 
    argc=0, argv=0x0, scope=0) at eval.c:5730
#19 0x08057930 in rb_eval (self=1075673536, n=0x0) at ruby.h:631
#20 0x0805a4b9 in rb_yield_0 (val=69, self=1075673536, klass=1075608316, 
    flags=0, avalue=0) at eval.c:4718
#21 0x0805aa99 in rb_yield (val=0) at eval.c:4800
#22 0x080812ef in int_upto (from=1, to=99) at numeric.c:2649
#23 0x08067d32 in call_cfunc (func=0x80812a0 <int_upto>, recv=1, 
    len=-1073750944, argc=135199712, argv=0xbfffeaa8) at eval.c:5372
#24 0x0805bef2 in rb_call0 (klass=1075659656, recv=1, id=4313, oid=0, argc=1, 
    argv=0xbfffeaa8, body=0x401d4310, nosuper=0) at eval.c:5509
#25 0x0805c748 in rb_call (klass=1075659656, recv=1, mid=4313, argc=1, 
    argv=0xbfffeaa8, scope=0) at eval.c:5730
---Type <return> to continue, or q <return> to quit---
#26 0x08057930 in rb_eval (self=1075673536, n=0x0) at ruby.h:631
#27 0x08056d1a in rb_eval (self=1075673536, n=0x0) at eval.c:2949
#28 0x08053e3b in ruby_exec () at eval.c:1456
#29 0x08053e80 in ruby_run () at eval.c:1477
#30 0x08052025 in main (argc=0, argv=0x0, envp=0xbffff8c4) at main.c:50
(gdb) 
-- 
[田中 哲][たなか あきら][Tanaka Akira]