notes: fix memory leak when pruning notes

In `prune_notes()` we first store the notes that are to be deleted in a local list, and then iterate through that list to delete those notes one by one. We never free the list though and thus leak its memory. Fix this. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Patrick Steinhardt committed Jun 11, 2024 at 11:19 UTC f644dc84949bcc6d6d06274a30feb4b366ae68de
2 files changed +7 -1
notes.c
+6 -1
@@ -1219,11 +1219,16 @@ void prune_notes(struct notes_tree *t, int flags)
1219 for_each_note(t, 0, prune_notes_helper, &l);
1220
1221 while (l) {
1222 + struct note_delete_list *next;
1223 +
1224 if (flags & NOTES_PRUNE_VERBOSE)
1225 printf("%s\n", hash_to_hex(l->sha1));
1226 if (!(flags & NOTES_PRUNE_DRYRUN))
1227 remove_note(t, l->sha1);
1226 - l = l->next;
1228 +
1229 + next = l->next;
1230 + free(l);
1231 + l = next;
1232 }
1233 }
1234
t/t3306-notes-prune.sh
+1
@@ -2,6 +2,7 @@
2
3 test_description='Test git notes prune'
4
5 +TEST_PASSES_SANITIZE_LEAK=true
6 . ./test-lib.sh
7
8 test_expect_success 'setup: create a few commits with notes' '