[Bug 1521043] Re: less 458 crashes if search regex has many groups

[Richard Hansen]

I renamed my account, so the PPA with the fixed version is now at:
https://launchpad.net/~rhansen/+archive/ubuntu/bug1521043

-- 
You received this bug notification because you are a member of Ubuntu
Sponsors Team, which is subscribed to the bug report.
https://bugs.launchpad.net/bugs/1521043

Title:
  less 458 crashes if search regex has many groups

Status in less package in Ubuntu:
  Triaged
Status in less package in Debian:
  Incomplete

Bug description:
  less 458 crashes if there are enough capture groups in the regular
  expression used for search:

      newline=$(printf \\nx); newline=${newline%x}
      echo x | LESS="+g/(((((x)))))${newline}" less

  On amd64, the above produces a segfault:

      Segmentation fault (core dumped)

  On i386, the above triggers an assert:

      *** Error in `less': double free or corruption (fasttop): 0x0887f9e8 ***
      Aborted

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/less/+bug/1521043/+subscriptions