Yegappan wrote:
> On Sat, Apr 15, 2017 at 6:26 AM, Bram Moolenaar <[email protected]> wrote:
> >
> > Dominique wrote:
> >
> >> afl-fuzz found this case which causes use of
> >> free memory in vim-8.0563 and older:
> >>
> >> $ cat bug.vim
> >> set efm=E,%W%m,
> >> cgetexpr ['C']
> >> set efm=%C%m
> >> lexpr '0'
> >> lopen
> >> call setqflist([], 'r')
> >> caddbuf
> >>
> >> $valgrind vim -u NONE -N -S bug.vim 2> vg.log
> >>
> >> Doing a git bissection, I see that it's
> >> a regression introduced by patch 7.4.1980:
> >>
> >> ===
> >> commit 361c8f0e517e41f1f1d34dae328044406fde80ac
> >> Author: Bram Moolenaar <[email protected]>
> >> Date: Sat Jul 2 15:41:47 2016 +0200
> >>
> >> patch 7.4.1980
> >> Problem: 'errorformat' is parsed for every call to ":caddexpr".
> >> Can't add
> >> to two location lists asynchronously.
> >> Solution: Keep the previously parsed data when appropriate. (mostly
> >> by
> >> Yegappan Lakshmanan)
> >> ===
> >
> > Thanks. Looks it happens because of not resetting qf_last.
> > I made a patch.
> >
>
> I just started looking into this. By that time, you have already
> sent out the patch :-).
I'm probably faster because I'm in a train :-).
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/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
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