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-rw-r--r--src/commit.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/src/commit.c b/src/commit.c
index 2f5a5b51e..255debe82 100644
--- a/src/commit.c
+++ b/src/commit.c
@@ -455,19 +455,18 @@ int git_commit_nth_gen_ancestor(
assert(ancestor && commit);
- current = (git_commit *)commit;
+ if (git_object_dup((git_object **) &current, (git_object *) commit) < 0)
+ return -1;
- if (n == 0)
- return git_commit_lookup(
- ancestor,
- commit->object.repo,
- git_object_id((const git_object *)commit));
+ if (n == 0) {
+ *ancestor = current;
+ return 0;
+ }
while (n--) {
- error = git_commit_parent(&parent, (git_commit *)current, 0);
+ error = git_commit_parent(&parent, current, 0);
- if (current != commit)
- git_commit_free(current);
+ git_commit_free(current);
if (error < 0)
return error;