Re: [PATCH v2 0/13] leak fixes for sparse-checkout code

> On Fri, May 31, 2024 at 07:24:34AM -0400, Jeff King wrote:
> 
> > So Patrick nerd-sniped me by asking if my earlier leakfix for git-mv was
> > triggered by the test suite. It was, in t7002, but that wasn't enough to
> > make the script leak-free. So I figured, how hard could it be to go all
> > the way?
> > 
> > Well. It only took a few patches (1-5), but in the process I stumbled on
> > a rather tricky interface oddity of add_pattern(), which caused some
> > other leaks. The interface is fixed in patch 6, and the matching leak
> > goes away in patch 7. Of course, I wanted to make sure it was tested, so
> > after poking around I found that t1091 triggered it.
> > 
> > But as you might guess, that didn't make t1091 leak-free. And I couldn't
> > bear leaving it on a cliffhanger like that, so patches 8-13 fix the rest
> > of the issues triggered by that script.
> > 
> > And along the way we managed to make t1090 and t3602 leak-free, too
> > (actually in patch 2, but I didn't notice until the whole thing was
> > done).
> > 
> > These should apply on top of jk/leakfixes, since the leak-freeness of
> > t7002 depends on the fix there.
> 
> Here's a v2 with a few minor updates, based on review from Patrick. The
> restoration of "old_pl" in patch 9 is now done unconditionally (it
> doesn't matter in practice due to a bunch of subtle things, but it's the
> less surprising and more defensive choice). And a small style update in
> patch 13.