[Bug:1.8] SEGV by ObjectSpace.define_finalizer("") {}

e$B0J2<$N$h$&$K$9$k$He(B SEGV e$B$7$^$9!#e(B

% ./ruby -ve ‘ObjectSpace.define_finalizer("") {}’
ruby 1.8.8dev (2009-03-15 revision 22961) [i686-linux]
zsh: segmentation fault ./ruby -ve ‘ObjectSpace.define_finalizer("")

% gdb ruby
GNU gdb 6.4.90-debian
Copyright © 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
welcome to change it and/or distribute copies of it under certain
Type “show copying” to see the conditions.
There is absolutely no warranty for GDB. Type “show warranty” for
This GDB was configured as “i486-linux-gnu”…Using host libthread_db
library “/lib/tls/i686/cmov/libthread_db.so.1”.

(gdb) run -ve ‘ObjectSpace.define_finalizer("") {}’
Starting program: /home/akr/ruby/18/ruby/ruby -ve
‘ObjectSpace.define_finalizer("") {}’
Failed to read a valid object file image from memory.
[Thread debugging using libthread_db enabled]
[New Thread -1210190144 (LWP 30411)]
ruby 1.8.8dev (2009-03-15 revision 22961) [i686-linux]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1210190144 (LWP 30411)]
0x081428c2 in ?? ()
(gdb) bt
#0 0x081428c2 in ?? ()
#1 0xbfcdb98c in ?? ()
#2 0x080716f6 in run_final (obj=3084700200) at gc.c:1964
#3 0x08071ab7 in rb_gc_call_finalizer_at_exit () at gc.c:2020
#4 0x0805a5b4 in ruby_finalize_1 () at eval.c:1601
#5 0x0806b782 in ruby_cleanup (ex=0) at eval.c:1641
#6 0x0806b8c1 in ruby_stop (ex=0) at eval.c:1699
#7 0x0806ba31 in ruby_run () at eval.c:1720
#8 0x080536bf in main (argc=Cannot access memory at address 0x2
) at main.c:48