The commit d3115660b4 (branch: add flags and config to inherit tracking,
2021-12-20) replaced in "struct tracking", the member "char *src" by a
new "struct string_list *srcs".
This caused a modification in find_tracked_branch(). The string
returned by remote_find_tracking(), previously assigned to "src", is now
added to the string_list "srcs".
That string_list is initialized with STRING_LIST_INIT_DUP, which means
that what is added is not the given string, but a duplicate. Therefore,
the string returned by remote_find_tracking() is leaked.
The leak can be reviewed with:
$ git branch foo
$ git remote add local .
$ git fetch local
$ git branch --track bar local/foo
Direct leak of 24 byte(s) in 1 object(s) allocated from:
... in xrealloc wrapper.c
... in strbuf_grow strbuf.c
... in strbuf_add strbuf.c
... in match_name_with_pattern remote.c
... in query_refspecs remote.c
... in remote_find_tracking remote.c
... in find_tracked_branch branch.c
... in for_each_remote remote.c
... in setup_tracking branch.c
... in create_branch branch.c
... in cmd_branch builtin/branch.c
... in run_builtin git.c
Let's fix the leak, using the "_nodup" API to add to the string_list.
This way, the string itself will be added instead of being strdup()'d.
And when the string_list is cleared, the string will be freed.
Signed-off-by: Rubén Justo <rjusto@xxxxxxxxx>
---
branch.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/branch.c b/branch.c
index 09b9563ae7..d88f50a48a 100644
--- a/branch.c
+++ b/branch.c
@@ -37,7 +37,7 @@ static int find_tracked_branch(struct remote *remote, void *priv)
if (!remote_find_tracking(remote, &tracking->spec)) {
switch (++tracking->matches) {
case 1:
- string_list_append(tracking->srcs, tracking->spec.src);
+ string_list_append_nodup(tracking->srcs, tracking->spec.src);
tracking->remote = remote->name;
break;
case 2:
--
2.40.1
