On Mon, Nov 07, 2022 at 06:07:01PM +0100, Ævar Arnfjörð Bjarmason wrote:
> 
> On Mon, Nov 07 2022, Ævar Arnfjörð Bjarmason wrote:
> 
> > On Mon, Nov 07 2022, Patrick Steinhardt wrote:
> 
> >> +TEST_PASSES_SANITIZE_LEAK=true
> >
> > Thanks for adding this! :)
> 
> Hrm, I spoke too soon :) This series adds new leaks, so it'll fail with
> the linux-leaks job. I have the following local monkeypatch on top,
> which obviously doesn't address the root cause. The t6018 leak is new
> due to the new tests you added.

Right, I didn't know it was as easy to run tests with leak checking as
just executing `make test SANITIZE=leak`. Anyway, I did that now and the
issue is in fact in how the hidden refs are parsed because we already
`xstrdup()` the config value as we need to modify it anyway.

The following patch fixes the issue:

diff --git a/refs.c b/refs.c
index f1711e2e9f..2c7e88b190 100644
--- a/refs.c
+++ b/refs.c
@@ -1430,7 +1430,7 @@ int parse_hide_refs_config(const char *var, const char *value, const char *secti
 		len = strlen(ref);
 		while (len && ref[len - 1] == '/')
 			ref[--len] = '\0';
-		string_list_append(hide_refs, ref);
+		string_list_append_nodup(hide_refs, ref);
 	}
 	return 0;
 }

Patrick