[debbugs-tracker] bug#19567: closed ("segmentation fault" for long patterns ...)

[GNU bug Tracking System]

Your message dated Sun, 11 Jan 2015 09:25:00 -0800
with message-id <address@hidden>
and subject line Re: bug#19567: "segmentation fault" for long patterns ...
has caused the debbugs.gnu.org bug report #19567,
regarding "segmentation fault" for long patterns ...
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
19567: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19567
GNU Bug Tracking System
Contact address@hidden with problems

--- Begin Message --- Subject: "segmentation fault" for long patterns ... Date: Sun, 11 Jan 2015 17:28:37 +0100 User-agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.3.0

hi

I got a segmentation fault when I try to match a very long pattern on a file: $ grep -Po 'jQuery\.extend\(Drupal\.settings,[ \t]*\{((?!\}\}\)).)+\}\}\);' /tmp/pattern-exemple.txt

Erreur de segmentation


the grep version : grep (GNU grep) 2.16


the gdb backtrace:
#0  0xb7f7d01a in ?? () from /lib/i386-linux-gnu/libpcre.so.3
#1  0xb7f8b090 in ?? () from /lib/i386-linux-gnu/libpcre.so.3
#2  0xb7f8b3e3 in ?? () from /lib/i386-linux-gnu/libpcre.so.3
#3  0xb7f8b090 in ?? () from /lib/i386-linux-gnu/libpcre.so.3
#4  0xb7f8b3e3 in ?? () from /lib/i386-linux-gnu/libpcre.so.3
(...)
#13099 0xb7f8b090 in ?? () from /lib/i386-linux-gnu/libpcre.so.3
#13100 0xb7f88ab3 in ?? () from /lib/i386-linux-gnu/libpcre.so.3
#13101 0xb7f8e9f3 in pcre_exec () from /lib/i386-linux-gnu/libpcre.so.3
#13102 0x0804c8a2 in ?? ()
#13103 0x0804e191 in ?? ()
#13104 0x0804f3de in ?? ()
#13105 0x0804a630 in ?? ()

#13106 0xb7dc7905 in __libc_start_main (main=0x804a150, argc=4, ubp_av=0xbffff8a4, init=0x806bfd0, fini=0x806c040, rtld_fini=0xb7fed5f0 <_dl_fini>, stack_end=0xbffff89c) at libc-start.c:260

#13107 0x0804b16d in ?? ()

pattern-exemple.txt
Description: Text document

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#19567: "segmentation fault" for long patterns ...
>
>
>
>
> Date: 
>
> Sun, 11 Jan 2015 09:25:00 -0800
>
>
>
>
> On Sun, Jan 11, 2015 at 8:28 AM, Roméo Capulet <address@hidden> wrote:
> > I got a segmentation fault when I try to match a very long pattern on a
> > file:
> > $ grep -Po 'jQuery\.extend\(Drupal\.settings,[ \t]*\{((?!\}\}\)).)+\}\}\);'
> > /tmp/pattern-exemple.txt
> > Erreur de segmentation
> >
> > the grep version : grep (GNU grep) 2.16
>
> Thank you for the complete bug report.
> That appears to be due to a bug in the version of libpcre that your
> version of grep uses.
> Using the latest release, grep-2.21 with newer pcre, that example no
> longer causes trouble.
>
> Since this issue appears not to affect the latest version, I'm marking
> this ticket as "done".
>
>
> --- End Message ---