[ruby-dev:25161] Curses::Window#subwin dumps core

次のようにすると core を吐きます。

% ./ruby -rcurses -e '
include Curses
init_screen
w = stdscr
h = Object.new
class << h; self end.send(:define_method, :to_int) {
  w.close
  10
}
w2 = w.subwin h, 20, 3, 3' > /dev/null
-e:10: [BUG] Segmentation fault
                               ruby 1.9.0 (2004-12-12) [i686-linux]

                                                                   zsh: abort (core dumped)  ./ruby -rcurses -e  > /dev/null
                                                                                                                           % 
% stty onlcr icrnl    
% 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 -rcurses -e 
include Curses
init_screen
w = stdscr
h = Object.new
class'.
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/curses.so...done.
Loaded symbols for /home/akr/ruby/head-ruby/lib/ruby/1.9/i686-linux/curses.so
Reading symbols from /lib/libncurses.so.5...done.
Loaded symbols for /lib/libncurses.so.5
#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  0x080d5886 in rb_bug (fmt=0x0) at error.c:214
#4  0x080b2852 in sigsegv (sig=11) at signal.c:446
#5  <signal handler called>
#6  0x401fbfe0 in subwin () from /lib/libncurses.so.5
#7  0x401dc8d7 in window_subwin (obj=1075600436, h=1075600416, w=41, top=3, left=0) at curses.c:783
#8  0x0806ae14 in call_cfunc (func=0x401dc800 <window_subwin>, recv=1075600436, len=135568960, argc=3, argv=0xbfffeab8)
    at eval.c:5433
#9  0x0805ea42 in rb_call0 (klass=1075603336, recv=1075600436, id=10953, oid=3, argc=4, argv=0xbfffeab8, body=0x401c66fc, 
    nosuper=0) at eval.c:5559
#10 0x0805ed08 in rb_call (klass=1075603336, recv=1075600436, mid=10953, argc=4, argv=0xbfffeab8, scope=0) at eval.c:5781
#11 0x0805982a in rb_eval (self=1075673536, n=0x3) at ruby.h:635
#12 0x080590b9 in rb_eval (self=1075673536, n=0x3) at eval.c:3380
#13 0x08055dfd in ruby_exec_internal () at eval.c:1470
#14 0x08055e16 in ruby_exec () at eval.c:1488
#15 0x08055e60 in ruby_run () at eval.c:1505
#16 0x08053e65 in main (argc=3, argv=0x3, envp=0xbffff8f8) at main.c:38
(gdb) 
-- 
[田中 哲][たなか あきら][Tanaka Akira]