Horrible fix for libgit2#3173.

src/checkout.c

@@ -2521,7 +2521,8 @@ int git_checkout_iterator(
 
 	if (data.opts.baseline_index) {
 		if ((error = git_iterator_for_index(
-				&baseline, data.opts.baseline_index, &baseline_opts)) < 0)
+				&baseline, git_index_owner(data.opts.baseline_index),
+				data.opts.baseline_index, &baseline_opts)) < 0)
 			goto cleanup;
 	} else {
 		if ((error = git_iterator_for_tree(
@@ -2633,7 +2634,7 @@ int git_checkout_index(
 		return error;
 	GIT_REFCOUNT_INC(index);
 
-	if (!(error = git_iterator_for_index(&index_i, index, NULL)))
+	if (!(error = git_iterator_for_index(&index_i, repo, index, NULL)))
 		error = git_checkout_iterator(index_i, index, opts);
 
 	if (owned)

src/diff.c

@@ -1371,7 +1371,7 @@ int git_diff_tree_to_index(
 
 	DIFF_FROM_ITERATORS(
 		git_iterator_for_tree(&a, old_tree, &a_opts), iflag,
-		git_iterator_for_index(&b, index, &b_opts), iflag
+		git_iterator_for_index(&b, repo, index, &b_opts), iflag
 	);
 
 	/* if index is in case-insensitive order, re-sort deltas to match */
@@ -1395,7 +1395,7 @@ int git_diff_index_to_workdir(
 		return error;
 
 	DIFF_FROM_ITERATORS(
-		git_iterator_for_index(&a, index, &a_opts),
+		git_iterator_for_index(&a, repo, index, &a_opts),
 		GIT_ITERATOR_INCLUDE_CONFLICTS,
 
 		git_iterator_for_workdir(&b, repo, index, NULL, &b_opts),
@@ -1472,8 +1472,8 @@ int git_diff_index_to_index(
 	assert(diff && old_index && new_index);
 
 	DIFF_FROM_ITERATORS(
-		git_iterator_for_index(&a, old_index, &a_opts), GIT_ITERATOR_DONT_IGNORE_CASE,
-		git_iterator_for_index(&b, new_index, &b_opts), GIT_ITERATOR_DONT_IGNORE_CASE
+		git_iterator_for_index(&a, repo, old_index, &a_opts), GIT_ITERATOR_DONT_IGNORE_CASE,
+		git_iterator_for_index(&b, repo, new_index, &b_opts), GIT_ITERATOR_DONT_IGNORE_CASE
 	);
 
 	/* if index is in case-insensitive order, re-sort deltas to match */

src/index.c

@@ -2907,8 +2907,8 @@ int git_index_read_index(
 
 	opts.flags = GIT_ITERATOR_DONT_IGNORE_CASE;
 
-	if ((error = git_iterator_for_index(&index_iterator, index, &opts)) < 0 ||
-		(error = git_iterator_for_index(&new_iterator, (git_index *)new_index, &opts)) < 0)
+	if ((error = git_iterator_for_index(&index_iterator, git_index_owner(index), index, &opts)) < 0 ||
+		(error = git_iterator_for_index(&new_iterator, git_index_owner(new_index), (git_index *)new_index, &opts)) < 0)
 		goto done;
 
 	if (((error = git_iterator_current(&old_entry, index_iterator)) < 0 &&

src/iterator.c

@@ -1080,6 +1080,7 @@ static void index_iterator__free(git_iterator *self)
 
 int git_iterator_for_index(
 	git_iterator **iter,
+	git_repository *repo,
 	git_index  *index,
 	git_iterator_options *options)
 {
@@ -1093,7 +1094,7 @@ int git_iterator_for_index(
 	}
 	ii->index = index;
 
-	ITERATOR_BASE_INIT(ii, index, INDEX, git_index_owner(index));
+	ITERATOR_BASE_INIT(ii, index, INDEX, repo);
 
 	if ((error = iterator__update_ignore_case((git_iterator *)ii, options ? options->flags : 0)) < 0) {
 		git_iterator_free((git_iterator *)ii);
@@ -2071,7 +2072,7 @@ int git_iterator_advance_over_with_status(
 
 			if (!error)
 				continue;
-			
+
 			else if (error == GIT_ENOTFOUND) {
 				/* we entered this directory only hoping to find child matches to
 				 * our pathlist (eg, this is `foo` and we had a pathlist entry for

src/iterator.h

@@ -95,6 +95,7 @@ extern int git_iterator_for_tree(
  */
 extern int git_iterator_for_index(
 	git_iterator **out,
+	git_repository *repo,
 	git_index *index,
 	git_iterator_options *options);
 

src/merge.c

@@ -2083,9 +2083,9 @@ static int iterator_for_annotated_commit(
 	opts.flags = GIT_ITERATOR_DONT_IGNORE_CASE;
 
 	if (commit == NULL) {
-		error = git_iterator_for_nothing(out, &opts); 
+		error = git_iterator_for_nothing(out, &opts);
 	} else if (commit->type == GIT_ANNOTATED_COMMIT_VIRTUAL) {
-		error = git_iterator_for_index(out, commit->index, &opts);
+		error = git_iterator_for_index(out, git_index_owner(commit->index), commit->index, &opts);
 	} else {
 		if (!commit->tree &&
 			(error = git_commit_tree(&commit->tree, commit->commit)) < 0)
@@ -2427,7 +2427,7 @@ static int write_merge_msg(
 	assert(repo && heads);
 
 	entries = git__calloc(heads_len, sizeof(struct merge_msg_entry));
-	GITERR_CHECK_ALLOC(entries); 
+	GITERR_CHECK_ALLOC(entries);
 
 	if (git_vector_init(&matching, heads_len, NULL) < 0) {
 		git__free(entries);
@@ -2481,7 +2481,7 @@ static int write_merge_msg(
 
 	if (matching.length)
 		sep =',';
-	
+
 	if ((error = merge_msg_entries(&matching, entries, heads_len, msg_entry_is_tag)) < 0 ||
 		(error = merge_msg_write_tags(&file, &matching, sep)) < 0)
 		goto cleanup;
@@ -2682,8 +2682,8 @@ static int merge_check_index(size_t *conflicts, git_repository *repo, git_index
 	iter_opts.pathlist.strings = (char **)staged_paths.contents;
 	iter_opts.pathlist.count = staged_paths.length;
 
-	if ((error = git_iterator_for_index(&iter_repo, index_repo, &iter_opts)) < 0 ||
-		(error = git_iterator_for_index(&iter_new, index_new, &iter_opts)) < 0 ||
+	if ((error = git_iterator_for_index(&iter_repo, repo, index_repo, &iter_opts)) < 0 ||
+		(error = git_iterator_for_index(&iter_new, repo, index_new, &iter_opts)) < 0 ||
 		(error = git_diff__from_iterators(&index_diff_list, repo, iter_repo, iter_new, &opts)) < 0)
 		goto done;
 
@@ -2759,7 +2759,7 @@ int git_merge__check_result(git_repository *repo, git_index *index_new)
 
 	if ((error = git_repository_head_tree(&head_tree, repo)) < 0 ||
 		(error = git_iterator_for_tree(&iter_head, head_tree, &iter_opts)) < 0 ||
-		(error = git_iterator_for_index(&iter_new, index_new, &iter_opts)) < 0 ||
+		(error = git_iterator_for_index(&iter_new, repo, index_new, &iter_opts)) < 0 ||
 		(error = git_diff__from_iterators(&merged_list, repo, iter_head, iter_new, &opts)) < 0)
 		goto done;
 

src/pathspec.c

@@ -550,7 +550,7 @@ int git_pathspec_match_index(
 
 	iter_opts.flags = pathspec_match_iter_flags(flags);
 
-	if (!(error = git_iterator_for_index(&iter, index, &iter_opts))) {
+	if (!(error = git_iterator_for_index(&iter, git_index_owner(index), index, &iter_opts))) {
 		error = pathspec_match_from_iterator(out, iter, flags, ps);
 		git_iterator_free(iter);
 	}
@@ -718,4 +718,3 @@ const char * git_pathspec_match_list_failed_entry(
 
 	return entry ? *entry : NULL;
 }
-

src/stash.c

@@ -685,8 +685,8 @@ static int merge_indexes(
 	iter_opts.flags = GIT_ITERATOR_DONT_IGNORE_CASE;
 
 	if ((error = git_iterator_for_tree(&ancestor, ancestor_tree, &iter_opts)) < 0 ||
-		(error = git_iterator_for_index(&ours, ours_index, &iter_opts)) < 0 ||
-		(error = git_iterator_for_index(&theirs, theirs_index, &iter_opts)) < 0)
+		(error = git_iterator_for_index(&ours, repo, ours_index, &iter_opts)) < 0 ||
+		(error = git_iterator_for_index(&theirs, repo, theirs_index, &iter_opts)) < 0)
 		goto done;
 
 	error = git_merge__iterators(out, repo, ancestor, ours, theirs, NULL);
@@ -712,7 +712,7 @@ static int merge_index_and_tree(
 	iter_opts.flags = GIT_ITERATOR_DONT_IGNORE_CASE;
 
 	if ((error = git_iterator_for_tree(&ancestor, ancestor_tree, &iter_opts)) < 0 ||
-		(error = git_iterator_for_index(&ours, ours_index, &iter_opts)) < 0 ||
+		(error = git_iterator_for_index(&ours, repo, ours_index, &iter_opts)) < 0 ||
 		(error = git_iterator_for_tree(&theirs, theirs_tree, &iter_opts)) < 0)
 		goto done;
 
@@ -728,7 +728,7 @@ static int merge_index_and_tree(
 static void normalize_apply_options(
 	git_stash_apply_options *opts,
 	const git_stash_apply_options *given_apply_opts)
-{	
+{
 	if (given_apply_opts != NULL) {
 		memcpy(opts, given_apply_opts, sizeof(git_stash_apply_options));
 	} else {

src/submodule.c

@@ -327,7 +327,7 @@ static int submodules_from_index(git_strmap *map, git_index *idx, git_config *cf
        const git_index_entry *entry;
        git_buf name = GIT_BUF_INIT;
 
-       if ((error = git_iterator_for_index(&i, idx, NULL)) < 0)
+       if ((error = git_iterator_for_index(&i, git_index_owner(idx), idx, NULL)) < 0)
                return error;
 
        while (!(error = git_iterator_advance(&entry, i))) {
@@ -1037,7 +1037,7 @@ static int submodule_repo_create(
 
 	/**
 	 * Repodir: path to the sub-repo. sub-repo goes in:
-	 * <repo-dir>/modules/<name>/ with a gitlink in the 
+	 * <repo-dir>/modules/<name>/ with a gitlink in the
 	 * sub-repo workdir directory to that repository.
 	 */
 	error = git_buf_join3(
@@ -1154,7 +1154,7 @@ int git_submodule_update(git_submodule *sm, int init, git_submodule_update_optio
 		clone_options.repository_cb_payload = sm;
 
 		/*
-		 * Do not perform checkout as part of clone, instead we 
+		 * Do not perform checkout as part of clone, instead we
 		 * will checkout the specific commit manually.
 		 */
 		clone_options.checkout_opts.checkout_strategy = GIT_CHECKOUT_NONE;

tests/diff/iterator.c

@@ -380,7 +380,7 @@ static void index_iterator_test(
 	iter_opts.start = start;
 	iter_opts.end = end;
 
-	cl_git_pass(git_iterator_for_index(&i, index, &iter_opts));
+	cl_git_pass(git_iterator_for_index(&i, repo, index, &iter_opts));
 
 	while (!(error = git_iterator_advance(&entry, i))) {
 		cl_assert(entry);
@@ -974,7 +974,7 @@ static void check_index_range(
 	i_opts.start = start;
 	i_opts.end = end;
 
-	cl_git_pass(git_iterator_for_index(&i, index, &i_opts));
+	cl_git_pass(git_iterator_for_index(&i, repo, index, &i_opts));
 
 	cl_assert(git_iterator_ignore_case(i) == ignore_case);