[ruby-dev:24568] Zlib::Deflate.deflate dumps core

次のようにすると core を吐きます。

% ./ruby -rzlib -e '
s = (1..100000).to_a.join()
Thread.new { Thread.pass; s.clear }
Zlib::Deflate.deflate(s)
'
-e:4: [BUG] Segmentation fault
ruby 1.9.0 (2004-10-22) [i686-linux]

zsh: abort (core dumped)  ./ruby -rzlib -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 -rzlib -e 
s = (1..100000).to_a.join()
Thread.new { Thread.pass; s.clear'.
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/tmp-ruby/lib/ruby/1.9/i686-linux/zlib.so...done.
Loaded symbols for /home/akr/ruby/tmp-ruby/lib/ruby/1.9/i686-linux/zlib.so
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
#0  0x4009e741 in kill () from /lib/libc.so.6
(gdb) bt
#0  0x4009e741 in kill () from /lib/libc.so.6
#1  0x4009e4c5 in raise () from /lib/libc.so.6
#2  0x4009fa08 in abort () from /lib/libc.so.6
#3  0x080d2536 in rb_bug (fmt=0x0) at error.c:214
#4  0x080b04d2 in sigsegv (sig=11) at signal.c:446
#5  <signal handler called>
#6  0x401e48a0 in adler32 () from /usr/lib/libz.so.1
#7  0xbfffeec0 in ?? ()
#8  0xbfffedc8 in ?? ()
#9  0x401e8f86 in deflateCopy () from /usr/lib/libz.so.1
Previous frame inner to this frame (corrupt stack?)
(gdb) 
-- 
[田中 哲][たなか あきら][Tanaka Akira]