[ruby-dev:7273] [BUG] regex.c

ごとけんです

息抜きに Ruby しようと思ったら、バグに当たってしまいました。

% ruby -ve '(" "*4680).scan(/((?!\\).*)+/)'
ruby 1.3.4-990625 [i386-freebsd2.2.6]
/tmp/rbn23789:1: [BUG] Segmentation fault
Abort
%

btだけつけます (__;

-- gotoken

(gdb) set arg  -ve '(" "*4680).scan(/((?!\\).*)+/)'
(gdb) run
Starting program: /home/chaos/gotoken/bin/ruby -ve '(" "*4680).scan(/((?!\\).*)+/)'
ruby 1.3.4-990625 [i386-freebsd2.2.6]

Program received signal SIGSEGV, Segmentation fault.
ruby_re_match (bufp=0xc1d00, string_arg=0xd4000 ' ' <repeats 200 times>..., 
    size=4680, pos=0, regs=0xc3a90) at regex.c:3580
3580              if (ismbchar(*d)) {
(gdb) p d
$1 = (unsigned char *) 0x0
(gdb) bt
#0  ruby_re_match (bufp=0xc1d00, 
    string_arg=0xd4000 ' ' <repeats 200 times>..., size=4680, pos=0, 
    regs=0xc3a90) at regex.c:3580
#1  0x421d1 in ruby_re_search (bufp=0xc1d00, 
    string=0xd4000 ' ' <repeats 200 times>..., size=4680, startpos=0, 
    range=4680, regs=0xc3a90) at regex.c:3035
#2  0x396b4 in rb_reg_search (reg=629312, str=629172, pos=0, reverse=0)
    at re.c:539
#3  0x4d1e0 in scan_once (str=629172, pat=629312, start=0xefbfd328)
    at string.c:2381
#4  0x4d2b6 in rb_str_scan (str=629172, pat=629312) at string.c:2417
#5  0x8d65 in call_cfunc (func=0x4d27c <rb_str_scan>, recv=629172, len=1, 
    argc=1, argv=0xefbfd454) at eval.c:3630
#6  0x9232 in rb_call0 (klass=671372, recv=629172, id=4089, argc=1, 
    argv=0xefbfd454, body=0xa361c, nosuper=1) at eval.c:3763
#7  0x98a4 in rb_call (klass=671372, recv=629172, mid=4089, argc=1, 
    argv=0xefbfd454, scope=0) at eval.c:3957
#8  0x5834 in rb_eval (self=675532, node=0x99a04) at eval.c:2165
#9  0x289c in eval_node (self=675532) at eval.c:967
#10 0x2a08 in ruby_run () at eval.c:1003
#11 0x1611 in main (argc=3, argv=0xefbfd710, envp=0xefbfd720) at main.c:39