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Bug 622513 - Incorrect regexp match
Incorrect regexp match
Status: RESOLVED OBSOLETE
Product: libxml2
Classification: Platform
Component: regexp
2.7.6
Other All
: Normal normal
: ---
Assigned To: Daniel Veillard
libxml QA maintainers
Depends on:
Blocks:
 
 
Reported: 2010-06-23 17:52 UTC by Per Hedeland
Modified: 2021-07-05 13:21 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
Program demonstrating incorrect regexp match (1.59 KB, application/octet-stream)
2010-06-23 17:52 UTC, Per Hedeland 		Details

Description Per Hedeland 2010-06-23 17:52:33 UTC 
Created attachment 164420 [details]
Program demonstrating incorrect regexp match

The attached program shows how a regexp specifying the valid forms of an IPv6 address matches the invalid string "0123456789abcdefABCDEF::". Specifically, it shows that while none of the individual branches in the regexp matches the string, the combination of the branches *does* match it. See the output of the program for the complete regexp.

Tested with 2.7.7, but this wasn't available in the version selector.
Comment 1 GNOME Infrastructure Team 2021-07-05 13:21:19 UTC 
GNOME is going to shut down bugzilla.gnome.org in favor of gitlab.gnome.org.
As part of that, we are mass-closing older open tickets in bugzilla.gnome.org
which have not seen updates for a longer time (resources are unfortunately
quite limited so not every ticket can get handled).

If you can still reproduce the situation described in this ticket in a recent
and supported software version, then please follow
  https://wiki.gnome.org/GettingInTouch/BugReportingGuidelines
and create a new ticket at
  https://gitlab.gnome.org/GNOME/libxml2/-/issues/

Thank you for your understanding and your help.