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bug#17516: [PATCH] grep: no count newline at the head of a text buffer
From: |
Norihiro Tanaka |
Subject: |
bug#17516: [PATCH] grep: no count newline at the head of a text buffer |
Date: |
Sat, 17 May 2014 10:20:51 +0900 |
Severity: critical
When cleared caches of transition tables, number of newline is counted
incorrectly, As a result, grep may crash.
I confirmed crash of grep with a text case in bug#15191
http://dobrokot.ru/dump/slow_dfa_merge.2013-08-26.tar.gz
$ env LC_ALL=C time -p src/egrep -f regex.re input_lines.txt
When `p' is beginning, p[-1] is out of the buffer. Therefore, we
shouldn't count it.
Norihiro
0001-grep-no-count-newline-at-the-head-of-a-text-buffer.patch
Description: Binary data
- bug#17516: [PATCH] grep: no count newline at the head of a text buffer,
Norihiro Tanaka <=