From: Shugo Maeda <shugo@...>
Date: 1999-02-06T18:37:40+09:00
Subject: [ruby-dev:4771] [BUG] inspect?

前田です。

Wakou Aoyama <wakou@fsinet.or.jp> writes:

> そして、1.3.1-990120 からは、つぎのようにすると 668 回目の p hash の所
> で落ちます。

うちでも落ちるのですが、inspectまわりのバグなんでしょうか。
# inspectの仕組みが変わったみたいですね。

$ ruby -v
ruby 1.3.1(99/02/05) [i586-linux]

こんなケースで落ちました。

ruby -e 'loop { ENV.each {|i| p i}}'

#0  0x40122570 in malloc ()
#1  0x4012307d in realloc ()
#2  0x40122d88 in realloc ()
#3  0x4003e996 in xrealloc (ptr=0x806f988, size=13) at gc.c:103
#4  0x400714d2 in rb_str_cat (str=1075499380, ptr=0x4007cd0a ", ", len=2)
    at string.c:424
#5  0x4002147a in inspect_ary (ary=1075505780) at array.c:840
#6  0x400212cf in inspect_call (arg=0xbfffdd30) at array.c:766
#7  0x40032c2e in rb_ensure (b_proc=0x400212b0 <inspect_call>, 
    data1=3221216560, e_proc=0x400212e0 <inspect_ensure>, data2=1075505780)
    at eval.c:3462
#8  0x400213bd in rb_protect_inspect (func=0x40021420 <inspect_ary>, 
    obj=1075505780, arg=0) at array.c:810
#9  0x4002150c in rb_ary_inspect (ary=1075505780) at array.c:854
#10 0x40033126 in call_cfunc (func=0x400214c0 <rb_ary_inspect>, 
    recv=1075505780, len=0, argc=0, argv=0x0) at eval.c:3612
#11 0x4003373f in rb_call0 (klass=1075525360, recv=1075505780, id=2953, 
    argc=0, argv=0x0, body=0x401b363c, nosuper=1) at eval.c:3748
#12 0x40033e91 in rb_call (klass=1075525360, recv=1075505780, mid=2953, 
    argc=0, argv=0x0, scope=1) at eval.c:3933
#13 0x4003410c in rb_funcall (recv=1075505780, mid=2953, n=0) at eval.c:4007
#14 0x4004f764 in rb_inspect (obj=1075505780) at object.c:144
#15 0x400465d9 in rb_p (obj=1075505780) at io.c:1688
#16 0x40046648 in rb_f_p (argc=1, argv=0xbfffe0f4) at io.c:1702
#17 0x4003314d in call_cfunc (func=0x40046620 <rb_f_p>, recv=1075547980, 
    len=-1, argc=1, argv=0xbfffe0f4) at eval.c:3618
#18 0x4003373f in rb_call0 (klass=1075551380, recv=1075547980, id=6465, 

もっと単純にこんなのでも落ちるようです。

ruby -e 'loop {ary = [1,2,3]; p ary}'

0x4011fc0d in _IO_file_xsputn ()
(gdb) bt
#0  0x4011fc0d in _IO_file_xsputn ()
#1  0x4011d531 in _IO_fwrite ()
#2  0x400465f7 in rb_p (obj=1075498960) at io.c:1689
#3  0x40046648 in rb_f_p (argc=1, argv=0xbfffe7d4) at io.c:1702
#4  0x4003314d in call_cfunc (func=0x40046620 <rb_f_p>, recv=1075547980, 
    len=-1, argc=1, argv=0xbfffe7d4) at eval.c:3618
#5  0x4003373f in rb_call0 (klass=1075551380, recv=1075547980, id=6465, 
    argc=1, argv=0xbfffe7d4, body=0x401b1404, nosuper=1) at eval.c:3748
#6  0x40033e91 in rb_call (klass=1075551380, recv=1075547980, mid=6465, 
    argc=1, argv=0xbfffe7d4, scope=1) at eval.c:3933
#7  0x4002ef8c in rb_eval (self=1075547980, node=0x401ad070) at eval.c:2160
#8  0x4002d69c in rb_eval (self=1075547980, node=0x401ad034) at eval.c:1695
#9  0x40031e50 in rb_yield_0 (val=4, self=1075547980, klass=0) at eval.c:3159
#10 0x4003202b in rb_f_loop () at eval.c:3206
#11 0x40033126 in call_cfunc (func=0x40032010 <rb_f_loop>, recv=1075547980, 
    len=0, argc=0, argv=0x0) at eval.c:3612
#12 0x4003373f in rb_call0 (klass=1075551380, recv=1075547980, id=3577, 
    argc=0, argv=0x0, body=0x401b8740, nosuper=1) at eval.c:3748
#13 0x40033e91 in rb_call (klass=1075551380, recv=1075547980, mid=3577, 
    argc=0, argv=0x0, scope=1) at eval.c:3933
#14 0x4002ef8c in rb_eval (self=1075547980, node=0x401ad00c) at eval.c:2160
#15 0x4002df3e in rb_eval (self=1075547980, node=0x401ad020) at eval.c:1901
#16 0x4002ba89 in eval_node (self=1075547980) at eval.c:961
#17 0x4002bb6f in ruby_run () at eval.c:990
#18 0x80485c9 in main (argc=3, argv=0xbffffc54, envp=0xbffffc64) at main.c:39

-- 
前田 修吾 (mailto:shugo@netlab.co.jp)