Teach 'submodule_has_commits()' to ensure that if a commit exists in a
submodule, that it is also reachable from a ref.
This is a prepritory step prior to merging the logic which checkes for
changed submodules when fetching or pushing.
Signed-off-by: Brandon Williams <bmwill@xxxxxxxxxx>
---
submodule.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/submodule.c b/submodule.c
index 3bcf44521..100d31d39 100644
--- a/submodule.c
+++ b/submodule.c
@@ -648,6 +648,30 @@ static int submodule_has_commits(const char *path, struct oid_array *commits)
return 0;
oid_array_for_each_unique(commits, check_has_commit, &has_commit);
+
+ if (has_commit) {
+ /*
+ * Even if the submodule is checked out and the commit is
+ * present, make sure it is reachable from a ref.
+ */
+ struct child_process cp = CHILD_PROCESS_INIT;
+ struct strbuf out = STRBUF_INIT;
+
+ argv_array_pushl(&cp.args, "rev-list", "-n", "1", NULL);
+ oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args);
+ argv_array_pushl(&cp.args, "--not", "--all", NULL);
+
+ prepare_submodule_repo_env(&cp.env_array);
+ cp.git_cmd = 1;
+ cp.no_stdin = 1;
+ cp.dir = path;
+
+ if (capture_command(&cp, &out, 1024) || out.len)
+ has_commit = 0;
+
+ strbuf_release(&out);
+ }
+
return has_commit;
}
--
2.13.0.rc0.306.g87b477812d-goog