Re: What's cooking in git.git (Oct 2021, #02; Wed, 6)

On Wed, Oct 06, 2021 at 05:24:14PM -0700, Junio C Hamano wrote:

* tb/repack-write-midx (2021-10-01) 9 commits
  (merged to 'next' on 2021-10-06 at ccdd5aaf2a)
 + builtin/repack.c: pass `--refs-snapshot` when writing bitmaps
 + builtin/repack.c: make largest pack preferred
 + builtin/repack.c: support writing a MIDX while repacking
 + builtin/repack.c: extract showing progress to a variable
 + builtin/repack.c: rename variables that deal with non-kept packs
 + builtin/repack.c: keep track of existing packs unconditionally
 + midx: preliminary support for `--refs-snapshot`
 + builtin/multi-pack-index.c: support `--stdin-packs` mode
 + midx: expose `write_midx_file_only()` publicly

 "git repack" has been taught to generate multi-pack reachability
 bitmaps.

 Will merge to 'master'.

Sorry not to catch this before it hit 'next', but there's a small leak
in the test helper. This patch can go on top to fix it.

-- >8 --
Subject: [PATCH] test-read-midx: fix leak of bitmap_index struct

In read_midx_preferred_pack(), we open the bitmap index but never free
it. This isn't a big deal since this is just a test helper, and we exit
immediately after, but since we're trying to keep our leak-checking tidy
now, it's worth fixing.

Signed-off-by: Jeff King <redacted>
---
 t/helper/test-read-midx.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/t/helper/test-read-midx.c b/t/helper/test-read-midx.c
index 0038559129..9d6fa7a377 100644
--- a/t/helper/test-read-midx.c
+++ b/t/helper/test-read-midx.c

@@ -85,11 +85,15 @@ static int read_midx_preferred_pack(const char *object_dir)
 		return 1;
 
 	bitmap = prepare_bitmap_git(the_repository);
-	if (!(bitmap && bitmap_is_midx(bitmap)))
+	if (!bitmap)
 		return 1;
-
+	if (!bitmap_is_midx(bitmap)) {
+		free_bitmap_index(bitmap);
+		return 1;
+	}
 
 	printf("%s\n", midx->pack_names[midx_preferred_pack(bitmap)]);
+	free_bitmap_index(bitmap);
 	return 0;
 }
 

-- 
2.33.0.1340.gfe2cb2531f