From: TANAKA Shin-ichi <tanaka@...>
Date: 1998-07-17T18:56:48+09:00
Subject: [ruby-list:8775] Re: ruby 1.1c0 released

東芝の田中です。

On Fri, 17 Jul 1998, Yukihiro Matsumoto wrote:

>   ftp://ftp.netlab.co.jp/pub/lang/ruby/ruby-1.1c.tar.gz

を早速コンパイルして使ってみています。

が、/usr/share/dict/web2 (英単語のリスト、とっても長いです) を
読み込む

fname = "/usr/share/dict/web2"
fp = open(fname)
ln = 0
foo = {}
while (line = fp.gets)
    foo[line] = ln
    #print line
end

というスクリプトを実行させると

aho.rb:6: [BUG] Segmentation fault
zsh: 5598 abort      ruby aho.rb

といってお亡くなりになってしまいます。

環境はFreeBSD 2.2.6で、
    ./configure
    make
    make install
としてインストールしました。

print lineを生かしておくと、71500行程度読み込んだところあたりです。

gdbで見た結果を以下に添付します。

(gdb) run aho.rb
Starting program: /usr/local/bin/ruby aho.rb

Program received signal SIGSEGV, Segmentation fault.
gc_mark (ptr=0x90900000) at gc.c:385
385         if (obj->as.basic.flags == 0) return; /* free cell */
(gdb) bt
#0  gc_mark (ptr=0x90900000) at gc.c:385
#1  0xfd43 in mark_hashentry (key=2425356288, value=2702423567) at gc.c:354
#2  0x3d850 in st_foreach (table=0xa7f20, func=0xfd34 <mark_hashentry>, 
    arg=0x0) at st.c:388
#3  0xfd67 in mark_hash (tbl=0xa7f20) at gc.c:364
#4  0x101a8 in gc_mark (ptr=0x830d0) at gc.c:513
#5  0xfd86 in gc_mark_maybe (obj=0x830d0) at gc.c:372
#6  0x10223 in gc_mark (ptr=0x8ed2c) at gc.c:556
#7  0xa425 in blk_mark (data=0x93180) at eval.c:4832
#8  0x101c8 in gc_mark (ptr=0x83508) at gc.c:524
#9  0xfd13 in mark_entry (key=7957, value=537864) at gc.c:337
#10 0x3d850 in st_foreach (table=0x8f0d0, func=0xfd08 <mark_entry>, arg=0x0)
    at st.c:388
#11 0xfd2f in mark_tbl (tbl=0x8f0d0) at gc.c:346
#12 0x10154 in gc_mark (ptr=0x85f88) at gc.c:491
#13 0x1014c in gc_mark (ptr=0x85f9c) at gc.c:490
#14 0x1014c in gc_mark (ptr=0x85fb0) at gc.c:490
#15 0x1016c in gc_mark (ptr=0x85fc4) at gc.c:497
#16 0x10098 in gc_mark (ptr=0x85fec) at gc.c:487
#17 0x10098 in gc_mark (ptr=0x83468) at gc.c:487
#18 0xfd13 in mark_entry (key=8085, value=537704) at gc.c:337
#19 0x3d850 in st_foreach (table=0x8f0d0, func=0xfd08 <mark_entry>, arg=0x0)
    at st.c:388
#20 0xfd2f in mark_tbl (tbl=0x8f0d0) at gc.c:346
#21 0x101d8 in gc_mark (ptr=0x8ed18) at gc.c:528
#22 0xfd13 in mark_entry (key=2809, value=584984) at gc.c:337
#23 0x3d850 in st_foreach (table=0x8f1f0, func=0xfd08 <mark_entry>, arg=0x0)
    at st.c:388
#24 0xfd2f in mark_tbl (tbl=0x8f1f0) at gc.c:346
#25 0x101d8 in gc_mark (ptr=0x8ecdc) at gc.c:528
#26 0x1016c in gc_mark (ptr=0x8ecc8) at gc.c:497
#27 0x1016c in gc_mark (ptr=0x8ecb4) at gc.c:497
#28 0x10098 in gc_mark (ptr=0x8ecf0) at gc.c:487
#29 0x10098 in gc_mark (ptr=0x8d42c) at gc.c:487
#30 0x10098 in gc_mark (ptr=0x8d440) at gc.c:487
#31 0x10098 in gc_mark (ptr=0x4071b0) at gc.c:487
#32 0xfd86 in gc_mark_maybe (obj=0x4071b0) at gc.c:372
#33 0x10677 in gc_mark_frame (frame=0xefbfd338) at gc.c:757
#34 0x106ce in gc_gc () at gc.c:816
#35 0xf995 in xmalloc (size=85372) at gc.c:62
#36 0xf9da in xcalloc (n=21343, size=4) at gc.c:81
#37 0x3d582 in rehash (table=0xa7f20) at st.c:234
#38 0x3d383 in st_insert (table=0xa7f20, key=0x40719c "\a\030", 
    value=0x1 <Error reading address 0x1: Invalid argument>) at st.c:176
#39 0x116f5 in hash_aset (hash=536784, key=4223408, val=1) at hash.c:486
#40 0x7aab in rb_call0 (klass=559624, recv=536784, id=333, argc=2, 
    argv=0xefbfd3c4, body=0x88788, nosuper=1) at eval.c:3382
#41 0x82f0 in rb_call (klass=559624, recv=536784, mid=333, argc=2, 
    argv=0xefbfd3c4, scope=0) at eval.c:3649
#42 0x4ce8 in rb_eval (self=581864, node=0x83198) at eval.c:1999
#43 0x4026 in rb_eval (self=581864, node=0x83148) at eval.c:1717
#44 0x3d46 in rb_eval (self=581864, node=0x83120) at eval.c:1608
#45 0x251a in eval_node (self=581864) at eval.c:925
#46 0x264d in ruby_run () at eval.c:955
#47 0x1611 in main (argc=2, argv=0xefbfd9dc, envp=0xefbfd9e8) at main.c:32
(gdb)