In d3115660b4 (branch: add flags and config to inherit tracking,
2021-12-20) a new option was introduced to allow creating a new branch,
inheriting the tracking of another branch.
The new code, strdup()'d the remote_name of the existing branch, but
unfortunately it was not freed, producing a leak.
$ git remote add local .
$ git update-ref refs/remotes/local/foo HEAD
$ git branch --track bar local/foo
branch 'bar' set up to track 'local/foo'.
$ git branch --track=inherit baz bar
branch 'baz' set up to track 'local/foo'.
Direct leak of 6 byte(s) in 1 object(s) allocated from:
... in xstrdup wrapper.c
... in inherit_tracking branch.c
... in setup_tracking branch.c
... in create_branch branch.c
... in cmd_branch builtin/branch.c
... in run_builtin git.c
Actually, the string we're strdup()'ing is from the struct branch
returned by get_branch(). Which, in turn, retrieves the string from the
global "struct repository". This makes perfectly valid to use the
string throughout the entire execution of create_branch(). There is no
need to duplicate it.
Let's fix the leak, removing the strdup().
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 ff81c2266a..19d606d360 100644
--- a/branch.c
+++ b/branch.c
@@ -233,7 +233,7 @@ static int inherit_tracking(struct tracking *tracking, const char *orig_ref)
return -1;
}
- tracking->remote = xstrdup(branch->remote_name);
+ tracking->remote = branch->remote_name;
for (i = 0; i < branch->merge_nr; i++)
string_list_append(tracking->srcs, branch->merge_name[i]);
return 0;
--
2.40.1
