ruby 1.5.3 (2000-05-10) [i686-linux]
   %  ruby -e 'Dir["**"]'
    -e:1: [BUG] Segmentation fault

(gdb) bt
#0  0x4012eab1 in __kill () from /lib/libc.so.6
#1  0x4012e6bf in raise (sig=6) at ../sysdeps/posix/raise.c:27
#2  0x4012fef3 in abort () at ../sysdeps/generic/abort.c:88
#3  0x40036efe in rb_bug (fmt=0x400b05b0 "Segmentation fault") at error.c:162
#4  0x4008dc0c in sigsegv (sig=11) at signal.c:376
#5  0x4012e9b8 in __restore ()
    at ../sysdeps/unix/sysv/linux/i386/sigaction.c:125
#6  0x40035674 in push_globs (ary=1076025064, s=0xbfffdca0 "**") at dir.c:667
#7  0x40035978 in dir_s_glob (dir=1076034344, str=1076025084) at dir.c:754
#8  0x40042549 in call_cfunc (func=0x40035870 <dir_s_glob>, recv=1076034344,
    len=1, argc=1, argv=0xbfffee50) at eval.c:3888
#9  0x40042b8f in rb_call0 (klass=1076034324, recv=1076034344, id=335, argc=1,
    argv=0xbfffee50, body=0x4022f7cc, nosuper=1) at eval.c:4021
#10 0x400433f4 in rb_call (klass=1076034324, recv=1076034344, mid=335, argc=1,
    argv=0xbfffee50, scope=0) at eval.c:4217
#11 0x4003dc9c in rb_eval (self=1076075864, n=0x4022d710) at eval.c:2339
#12 0x40039ed0 in eval_node (self=1076075864) at eval.c:1028
#13 0x40039fb4 in ruby_run () at eval.c:1051
#14 0x8048749 in main (argc=3, argv=0xbffff544, envp=0xbffff554) at main.c:41