K 10
svn:author
V 3
pfg
K 8
svn:date
V 27
2016-05-21T19:54:10.345842Z
K 7
svn:log
V 424
libc/regex: fix two buffer underruns.

Fix some rather complex regex issues found on OpenBSD as part of some
ongoing work to fix a sed(1) bug.

Curiously the OpenBSD tests don't trigger segfaults on FreeBSD but the
bugs were confirmed by running a port of FreeBSD's regex under OpenBSD's
malloc. Huge thanks to Ingo for confirming the behavior.

Taken from:	Ingo Schwarze (through openbsd-tech 2016-05-15)
MFC after:	1 week

END