[ruby-dev:28180] Re: Generator dumps core

In article <[e-mail]>,
  H.Yamamoto <[e-mail]> writes:

> 現在の HEAD の generator.rb だと、下のコードが SEGV します。

少しちっちゃくすると、こうですかね。

% ./ruby -ve '
def m(v)
  Thread.stop
  Thread.critical = true
end

t1 = Thread.new {
  sleep
}

t2 = Thread.new {
  m(0)
  t1.join
}

t2.wakeup
Thread.stop
'
ruby 1.9.0 (2005-12-30) [i686-linux]
zsh: segmentation fault (core dumped)  ./ruby -ve 
% gdb ruby core 
GNU gdb 6.3-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/tls/libthread_db.so.1".

Core was generated by `./ruby -ve 
def m(v)
  Thread.stop
  Thread.critical = true
end

t1 = Thread.ne'.
Program terminated with signal 11, Segmentation fault.

warning: current_sos: Can't read pathname for load map: Input/output error

Reading symbols from /lib/tls/libdl.so.2...done.
Loaded symbols for /lib/tls/libdl.so.2
Reading symbols from /lib/tls/libcrypt.so.1...done.
Loaded symbols for /lib/tls/libcrypt.so.1
Reading symbols from /lib/tls/libm.so.6...done.
Loaded symbols for /lib/tls/libm.so.6
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
#0  rb_svar (cnt=0) at eval.c:857
857         if (cnt >= ruby_scope->local_tbl[0]) return NULL;
(gdb) bt
#0  rb_svar (cnt=0) at eval.c:857
#1  0x080918bd in rb_lastline_get () at parse.y:8630
#2  0x08058dbd in stack_extend (th=0x814c358, exit=Variable "exit" is not available.
) at eval.c:10242
#3  0x08058ce2 in stack_extend (th=0x0, exit=28, addr_in_prev_frame=0xb7dd1458) at eval.c:10291
#4  0x00000000 in ?? ()
#5  0x080fd1f7 in casetable ()
#6  0x00000012 in ?? ()
#7  0xbf898cc8 in ?? ()
#8  0x08091ac9 in rb_parser_new () at parse.y:8751
Previous frame inner to this frame (corrupt stack?)
(gdb) 
-- 
[田中 哲][たなか あきら][Tanaka Akira]