GNU bug report logs - #19567
"segmentation fault" for long patterns ...

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From: Roméo Capulet <p-pioneer-q <at> gmx.fr>
To: 19567 <at> debbugs.gnu.org
Subject: bug#19567: "segmentation fault" for long patterns ...
Date: Sun, 11 Jan 2015 17:28:37 +0100

[Message part 1 (text/plain, inline)]

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 (text/plain, attachment)]

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