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Message #125272
[Bug 1521043] Re: less 458 crashes if search regex has many groups
Thank you so much for the patch! I've uploaded it with minor
modifications to xenial. Specifically, adjusted changelog (version
simplification, wily->xenial, named patch file) and ran update-
maintainer.
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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
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References