Zero-minimum possessive groups does not match empty string

Upstream patch ported to pcre 8.31 for 14.04

The attachment "pcre-8.31-zero-repeat-bug.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

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Thanks for the patch. Could you please prepare a debdiff for trusty and wily suitable for sponsoring as an SRU?

Thanks!

Like this?

Note for wily the testcase needs to be slightly changed:

echo '"a"'|pcregrep --no-jit '("([^b"]*+(b.)?)*+")++'

(expected output is unchanged: "a")

Thank you Arne! I've uploaded the trusty patch, please help test when it gets published in -proposed.

The wily patch doesn't apply cleanly (there have been releases in -updates since wily got released).

Nope, that was just a brain fart on my part. I've uploaded to wily too now, thanks.

Hello Arne, or anyone else affected,

Accepted pcre3 into wily-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/pcre3/2:8.35-7.1ubuntu1.4 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Hello Arne, or anyone else affected,

Accepted pcre3 into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/pcre3/1:8.31-2ubuntu2.3 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Thank you Michael for uploading the patched version. I've tested the package in trusty and wily and the bug is fixed in both.

This bug was fixed in the package pcre3 - 2:8.35-7.1ubuntu1.4

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pcre3 (2:8.35-7.1ubuntu1.4) wily; urgency=medium

  * Fix empty-matching possessive zero-repeat groups bug (LP: #1456195)

 -- Arne <ubuntu@2ar.nl> Wed, 13 Apr 2016 10:16:14 +0000

The verification of the Stable Release Update for pcre3 has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package pcre3 - 1:8.31-2ubuntu2.3

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pcre3 (1:8.31-2ubuntu2.3) trusty; urgency=medium

  * Fix empty-matching possessive zero-repeat groups bug (LP: #1456195)

 -- Arne de Bruijn <ubuntu@2ar.nl> Wed, 13 Apr 2016 10:51:02 +0200