freebsd-nq/usr.bin/grep
Dimitry Andric 00f060000f Fix a segfault in bsdgrep when parsing the invalid extended regexps "?"
or "+" (these are invalid, because there is no preceding operand).

When bsdgrep attempts to emulate GNU grep in discarding and ignoring the
invalid ? or + operators, some later logic in tre_compile_fast() goes
beyond the end of the buffer, leading to a crash.

Fix this by bailing out, and reporting a bad pattern instead.

Reported by:	Steve Kargl
MFC after:	1 week
2016-08-02 20:25:22 +00:00
..
nls
regex Fix a segfault in bsdgrep when parsing the invalid extended regexps "?" 2016-08-02 20:25:22 +00:00
tests
file.c
grep.1
grep.c Remove usage of _WITH_GETLINE from usr.bin 2016-07-30 01:07:47 +00:00
grep.h
Makefile
Makefile.depend
queue.c
util.c