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- Subject: Re: [LPeg] intermittent stack exhaustion
- From: Patrick Donnelly <batrick@...>
- Date: Sun, 11 Sep 2016 18:14:52 -0400
Hi Sebastian,
On Sun, Sep 11, 2016 at 12:22 PM, Sebastian Cato <seb.cato@gmail.com> wrote:
> Since the problem only occurs intermittently, I run markdown_test.lua as such:
> #!/usr/bin/bash -e
> while true; do
> ./markdown_test.lua
> done
>
> Looking at the core dump, I see:
>
> #0 0x00007f3fb7060889 in hascaptures (tree=0x0) at lpcode.c:131
> #1 0x00007f3fb706092c in hascaptures (tree=0x56012245c45c) at lpcode.c:144
> #2 0x00007f3fb706092c in hascaptures (tree=0x56012245c454) at lpcode.c:144
> #3 0x00007f3fb706092c in hascaptures (tree=0x56012245c1dc) at lpcode.c:144
> #4 0x00007f3fb706092c in hascaptures (tree=0x56012245c46c) at lpcode.c:144
> [...]
We saw the same problem with Nmap in a PR merging LPeg v1.0.0:
https://github.com/nmap/nmap/pull/478
I hadn't had time to find a trivial test case so thank you Sebastian
for doing that. Hopefully Roberto sees an easy way to fix it :)
--
Patrick Donnelly
