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bug#16499: GNU grep-2.16-1.mga4 , grep-2.16 from sources and grep from g
From: |
Shlomi Fish |
Subject: |
bug#16499: GNU grep-2.16-1.mga4 , grep-2.16 from sources and grep from git master HEAD get stuck during an LC_ALL=en_US.UTF-8 search inside a short binary file |
Date: |
Sun, 19 Jan 2014 17:10:11 +0200 |
Hi all,
after I save the attached file as 1.dat , I see that grep -iP on '^Subject:'
or on '^S' gets stuck in the en_US.UTF-8 locale. It is fine in pcregrep and in
ack.
[SHELL]
address@hidden:~$ time LC_ALL=en_US.UTF-8
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -iP '^Subject:' < 1.dat ^C
real 0m4.199s
user 0m4.195s
sys 0m0.003s
address@hidden:~$ time LC_ALL=en_US.UTF-8
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -iP '^S' < 1.dat ^C
real 0m3.486s
user 0m3.485s
sys 0m0.001s
address@hidden:~$ time LC_ALL=en_US.UTF-8
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -iE '^S' < 1.dat
real 0m0.002s
user 0m0.002s
sys 0m0.000s
address@hidden:~$ time LC_ALL=en_US.UTF-8
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -P '^S' < 1.dat ^C
real 0m1.887s
user 0m1.885s
sys 0m0.000s
address@hidden:~$ time LC_ALL=en_US.UTF-8
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -P '^Subject:' < 1.dat
real 0m0.003s
user 0m0.000s
sys 0m0.002s
address@hidden:~$ time LC_ALL=en_US.UTF-8
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -P '^Subject:' < 1.dat time LC_ALL=C
~/apps/TEST-grep-from-git-TO-DEL/bin/grep -iP '^Subject:' < 1.dat
real 0m0.003s
user 0m0.001s
sys 0m0.001s
address@hidden:~$ time LC_ALL=C pcregrep -i '^Subject:' < 1.dat
real 0m0.002s
user 0m0.001s
sys 0m0.000s
address@hidden:~$ time LC_ALL=C ack -i '^Subject:' 1.dat
real 0m0.066s
user 0m0.059s
sys 0m0.007s
address@hidden:~$ time LC_ALL=en_US.UTF-8 ack -i '^Subject:' 1.dat
real 0m0.070s
user 0m0.063s
sys 0m0.006s
[/SHELL]
The same thing happens with grep-2.16 built from the sources. I'm on Mageia
Linux x86-64 Cauldron (what will be Mageia 4).
address@hidden:~$ ldd ~/apps/TEST-grep-from-git-TO-DEL/bin/grep
linux-vdso.so.1 (0x00007fff2a7fe000)
libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f19ed302000)
libc.so.6 => /lib64/libc.so.6 (0x00007f19ecf4d000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f19ecd30000)
/lib64/ld-linux-x86-64.so.2 (0x00007f19ed568000)
address@hidden:~$ rpm -qf /lib64/libpcre.so.1
lib64pcre1-8.33-2.mga4
Regards,
Shlomi Fish
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1.dat
Description: Binary data
- bug#16499: GNU grep-2.16-1.mga4 , grep-2.16 from sources and grep from git master HEAD get stuck during an LC_ALL=en_US.UTF-8 search inside a short binary file,
Shlomi Fish <=