Re: Bug#366469: grep segfaults

[Justin Pryzby]

tag 366469 confirmed
reassign 366469 grep,libc6
retitle 366469 grep -i segfaults matching a binary file in zh_CN.GBK locale
thanks

On Mon, May 08, 2006 at 03:42:38PM -0700, Xin Liu wrote:
> Package: grep
> Version: 2.5.1.ds2-4
> 
> When the locale is zh_CN.GBK, "grep -i" would produce segment fault
> with binary files. For instance:
> ***
> address@hidden:~/tmp/tmp$ grep -i readline /bin/bash
> Segmentation fault
> ***
I can confirm this; thanks for the report.  It looks like it might be
a glibc bug:

#0  0xb7eb2c1f in *__GI_memcpy (dstpp=0x8075b48, srcpp=0xbfb7ba24, 
    len=4294967295) at ../sysdeps/generic/memcpy.c:55
#1  0xb7ee3aab in build_wcs_upper_buffer (pstr=0xbfb7bbc8)
    at regex_internal.c:424
#2  0xb7ee3ee3 in re_string_reconstruct (pstr=0xbfb7bbc8, idx=163, 
    eflags=<value optimized out>) at regex_internal.c:726
#3  0xb7eea1cc in re_search_internal (preg=0x8075278, string=0x807e1c5 "", 
    length=<value optimized out>, start=134699848, range=349, stop=349, 
    nmatch=1, pmatch=0x8075f78, eflags=0) at regexec.c:797
#4  0xb7eeb2af in re_search_stub (bufp=0x8075278, string=0x807e1c5 "", 
    length=349, start=0, range=349, stop=-1, regs=0x8075298, ret_len=0)
    at regexec.c:454
#5  0xb7eeb7c3 in __re_search (bufp=0xffffffff, 
    string=0x8075b48 "????\204???????????", length=1073738376, start=0, 
    range=0, regs=0x0) at regexec.c:318
#6  0x08058666 in EGexecute ()
#7  0x0804ab02 in grepbuf ()
#8  0x0804b4b0 in grepfile ()
#9  0x0804d0b4 in main ()

Justin