fix strstr, memmem, strcasestr
Eric Blake
eblake@redhat.com
Wed Oct 6 09:31:00 GMT 2010
My strstr() implementation originally posted for newlib was also copied
to glibc, which means that newlib also suffers from this glibc bug:
http://sourceware.org/bugzilla/show_bug.cgi?id=12092
[Normally, newlib is immune from glibc bugs because newlib won't pull in
LGPL code from glibc. But remember that as the original author of this
particular strstr() implementation, I exercised my right to dual-license
my code; so although glibc's use of the implementation is LGPL, newlib's
use is under a more-permissive license.]
Since it's a bug in my original implementation, and the fix is a single
line swap, I'm pushing the fix as obvious (whether the algorithm is
obvious is a different question).
2010-10-05 Eric Blake <eblake@redhat.com>
memmem, strstr, strcasestr: fix bug with long periodic needle
* lib/str-two-way.h (two_way_long_needle): Avoid bug with long
periodic needle having false positive.
--
Eric Blake eblake@redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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