[ruby-dev:12293] crash on proc without a block

小宮です

irbを使っていて気付いたのですが、

  def foo
    binding
  end
  eval "proc{proc}.call", foo

がクラッシュします。  

$ ruby -e 'def foo; binding; end; eval "proc{proc}.call", foo'
(eval):1: [BUG] Segmentation fault
ruby 1.6.3 (2001-02-24) [i686-linux]
Aborted

$ gdb ruby
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(gdb) run -e 'def foo; binding; end; eval "proc{proc}.call", foo'
Starting program: /usr/local/bin/ruby -e 'def foo; binding; end; eval "proc{proc}.call", foo'

Program received signal SIGSEGV, Segmentation fault.
0x805d45f in proc_new (klass=1075215176) at eval.c:6186
6186	    *data = *ruby_block;
(gdb) bt
#0  0x805d45f in proc_new (klass=1075215176) at eval.c:6186
#1  0x805d564 in rb_f_lambda () at eval.c:6227
#2  0x8059216 in call_cfunc (func=0x805d550 <rb_f_lambda>, recv=1075264656, 
    len=0, argc=0, argv=0x0) at eval.c:4190
#3  0x8059721 in rb_call0 (klass=1075268756, recv=1075264656, id=8497, argc=0, 
    argv=0x0, body=0x40167a80, nosuper=1) at eval.c:4326
#4  0x8059e67 in rb_call (klass=1075268756, recv=1075264656, mid=8497, argc=0, 
    argv=0x0, scope=2) at eval.c:4526
#5  0x80552cc in rb_eval (self=1075264656, n=0x40166acc) at eval.c:2530
#6  0x8057e53 in rb_yield_0 (val=6, self=1075264656, klass=0, acheck=2)
    at eval.c:3582
#7  0x805d7f4 in proc_call (proc=1075210836, args=6) at eval.c:6302
#8  0x80591f4 in call_cfunc (func=0x805d5b4 <proc_call>, recv=1075210836, 
    len=-2, argc=0, argv=0x0) at eval.c:4184
#9  0x8059721 in rb_call0 (klass=1075215176, recv=1075210836, id=5801, argc=0, 
    argv=0x0, body=0x40167af8, nosuper=1) at eval.c:4326
#10 0x8059e67 in rb_call (klass=1075215176, recv=1075210836, mid=5801, argc=0, 
    argv=0x0, scope=0) at eval.c:4526
#11 0x80552cc in rb_eval (self=1075264656, n=0x40166a7c) at eval.c:2530
#12 0x8051c98 in eval_node (self=1075264656, node=0x40166a7c) at eval.c:1077
#13 0x805a759 in eval (self=1075264656, src=1075211096, scope=1075211036, 
    file=0x80b34f5 "(eval)", line=1) at eval.c:4817
#14 0x805ab05 in rb_f_eval (argc=2, argv=0xbffff5a4, self=1075264656)
---Type <return> to continue, or q <return> to quit---
    at eval.c:4920
#15 0x8059208 in call_cfunc (func=0x805a998 <rb_f_eval>, recv=1075264656, 
    len=-1, argc=2, argv=0xbffff5a4) at eval.c:4187
#16 0x8059721 in rb_call0 (klass=1075268756, recv=1075264656, id=3649, argc=2, 
    argv=0xbffff5a4, body=0x401735d8, nosuper=1) at eval.c:4326
#17 0x8059e67 in rb_call (klass=1075268756, recv=1075264656, mid=3649, argc=2, 
    argv=0xbffff5a4, scope=1) at eval.c:4526
#18 0x80552cc in rb_eval (self=1075264656, n=0x40166b94) at eval.c:2530
#19 0x8051c98 in eval_node (self=1075264656, node=0x40166b94) at eval.c:1077
#20 0x8052031 in ruby_run () at eval.c:1207
#21 0x80508c6 in main (argc=3, argv=0xbffffc24, envp=0xbffffc34) at main.c:50
(gdb) frame 7
#7  0x805d7f4 in proc_call (proc=1075210836, args=6) at eval.c:6302
6302		result = rb_yield_0(args, 0, 0, Qtrue);
(gdb) p orphan
$1 = 1

この辺が怪しいと思うのですが・・・


小宮 健一