1 files changed, 1 insertions, 0 deletions
diff --git a/commit.h b/commit.h
index 3a7b06a828..ba9f63813e 100644
--- a/commit.h
+++ b/commit.h
@@ -133,6 +133,7 @@ extern int is_repository_shallow(void);
 extern struct commit_list *get_shallow_commits(struct object_array *heads,
 		int depth, int shallow_flag, int not_shallow_flag);
 
+int is_descendant_of(struct commit *, struct commit_list *);
 int in_merge_bases(struct commit *, struct commit **, int);
 
 extern int interactive_add(int argc, const char **argv, const char *prefix);