Hi Peff,

On Tue, 1 Dec 2020, Jeff King wrote:

On Sat, Nov 28, 2020 at 06:44:38AM +0000, Johannes Schindelin via GitGitGadget wrote:

quoted

From: Johannes Schindelin <redacted>

The stack_test hard-codes `/tmp/`. That is a particular problem on
Windows where the temp directory is never at that location.

Let's not do that, but instead use `TMPDIR` as we do in similar
scenarios in the rest of Git's source code.

Yeah, I noticed this, as well. This seems like a good band-aid, but it
would probably be nice if the test tool was able to write into a
specified directory (or even just the current directory).

You can force it to do that by setting `TMPDIR` to the path of the current
directory...

I don't see it being invoked anywhere,

It is invoked in `t/t0032-reftable-unittest.sh`:
https://github.com/dscho/git/blob/reftable-on-windows/t/t0032-reftable-unittest.sh

but presumably if we were to add support to our test suite, we'd have a
script which invokes it within a scratch directory.

I agree that it would make most sense for t0032 to prefix the call to
`test-tool` with `TMPDIR=$PWD`.

Ciao,
Dscho