こんにちは、sheepman です。
次のようにすると core を吐きます。

$ cat t.rb
eval("proc{break}").call

$ ./miniruby -v t.rb
ruby 1.9.0 (2005-11-18) [i686-linux]
YARVCore 0.3.3 (rev: 362) [opts: ]
zsh: segmentation fault  ./miniruby -v t.rb

以下はバックトレースです。

(gdb) bt
#0  rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:161
#1  0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#2  0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#3  0x400ec908 in killpg () from /lib/i686/libc.so.6
#4  0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#5  0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#6  0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#7  0x400ec908 in killpg () from /lib/i686/libc.so.6
#8  0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#9  0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#10 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#11 0x400ec908 in killpg () from /lib/i686/libc.so.6
#12 0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#13 0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#14 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#15 0x400ec908 in killpg () from /lib/i686/libc.so.6
#16 0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#17 0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#18 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#19 0x400ec908 in killpg () from /lib/i686/libc.so.6
#20 0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#21 0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#22 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#23 0x400ec908 in killpg () from /lib/i686/libc.so.6
#24 0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#25 0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#26 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#27 0x400ec908 in killpg () from /lib/i686/libc.so.6
#28 0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#29 0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#30 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
...
#3634 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#3635 0x400ec908 in killpg () from /lib/i686/libc.so.6
#3636 0x080c9451 in rb_bug (fmt=0x80f2651 "Segmentation fault") at ../yarv/error.c:165
#3637 0x080a0a03 in sigsegv (sig=11) at ../yarv/signal.c:457
#3638 0x4002ce8e in __pthread_clock_settime () from /lib/i686/libpthread.so.0
#3639 0x400ec908 in killpg () from /lib/i686/libc.so.6
#3640 0x080586f6 in ruby_cleanup (ex=2) at ../yarv/eval.c:246
#3641 0x08058846 in ruby_stop (ex=2) at ../yarv/eval.c:288
#3642 0x08058890 in rb_eval_string (str=0x3 <Address 0x3 out of bounds>) at ../yarv/eval.c:300
#3643 0x08055f75 in main () at ../yarv/main.c:36
#3644 0x400d9c1f in __libc_start_main () from /lib/i686/libc.so.6


-- 
sheepman / TAMURA Takashi
sheepman sheepman.sakura.ne.jp http://sheepman.parfait.ne.jp/

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