Merge branch 'ab/plug-random-leaks'

Plug random memory leaks.

* ab/plug-random-leaks:
  repository.c: free the "path cache" in repo_clear()
  range-diff: plug memory leak in read_patches()
  range-diff: plug memory leak in common invocation
  lockfile API users: simplify and don't leak "path"
  commit-graph: stop fill_oids_from_packs() progress on error and free()
  commit-graph: fix memory leak in misused string_list API
  submodule--helper: fix trivial leak in module_add()
  transport: stop needlessly copying bundle header references
  bundle: call strvec_clear() on allocated strvec
  remote-curl.c: free memory in cmd_main()
  urlmatch.c: add and use a *_release() function
  diff.c: free "buf" in diff_words_flush()
  merge-base: free() allocated "struct commit **" list
  index-pack: fix memory leaks

7 files changed, 19 insertions, 8 deletions

diff --git a/builtin/bundle.c b/builtin/bundle.c
index 5a85d7cd0f..2adad545a2 100644
--- a/builtin/bundle.c
+++ b/builtin/bundle.c
@@ -93,6 +93,7 @@ static int cmd_bundle_create(int argc, const char **argv, const char *prefix) {
 	if (!startup_info->have_repository)
 		die(_("Need a repository to create a bundle."));
 	ret = !!create_bundle(the_repository, bundle_file, argc, argv, &pack_opts, version);
+	strvec_clear(&pack_opts);
 	free(bundle_file);
 	return ret;
 }
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index 4247fbde95..51c4040ea6 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -192,7 +192,7 @@ static int git_commit_graph_write_config(const char *var, const char *value,
 
 static int graph_write(int argc, const char **argv)
 {
-	struct string_list pack_indexes = STRING_LIST_INIT_NODUP;
+	struct string_list pack_indexes = STRING_LIST_INIT_DUP;
 	struct strbuf buf = STRBUF_INIT;
 	struct oidset commits = OIDSET_INIT;
 	struct object_directory *odb = NULL;
@@ -273,8 +273,8 @@ static int graph_write(int argc, const char **argv)
 
 	if (opts.stdin_packs) {
 		while (strbuf_getline(&buf, stdin) != EOF)
-			string_list_append(&pack_indexes,
-					   strbuf_detach(&buf, NULL));
+			string_list_append_nodup(&pack_indexes,
+						 strbuf_detach(&buf, NULL));
 	} else if (opts.stdin_commits) {
 		oidset_init(&commits, 0);
 		if (opts.progress)
diff --git a/builtin/config.c b/builtin/config.c
index 542d8d02b2..ebec61868b 100644
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -612,7 +612,7 @@ static int get_urlmatch(const char *var, const char *url)
 
 		strbuf_release(&matched->value);
 	}
-	string_list_clear(&config.vars, 1);
+	urlmatch_config_release(&config);
 	string_list_clear(&values, 1);
 	free(config.url.url);
 
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index c45273de3b..38fb4f4e55 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -1113,6 +1113,7 @@ static void *threaded_second_pass(void *data)
 			list_add(&child->list, &work_head);
 			base_cache_used += child->size;
 			prune_base_data(NULL);
+			free_base_data(child);
 		} else {
 			/*
 			 * This child does not have its own children. It may be
@@ -1135,6 +1136,7 @@ static void *threaded_second_pass(void *data)
 
 				p = next_p;
 			}
+			FREE_AND_NULL(child);
 		}
 		work_unlock();
 	}
@@ -1428,6 +1430,7 @@ static void fix_unresolved_deltas(struct hashfile *f)
 		 * object).
 		 */
 		append_obj_to_pack(f, d->oid.hash, data, size, type);
+		free(data);
 		threaded_second_pass(NULL);
 
 		display_progress(progress, nr_resolved_deltas);
@@ -1707,6 +1710,7 @@ static void show_pack_info(int stat_only)
 			  i + 1,
 			  chain_histogram[i]);
 	}
+	free(chain_histogram);
 }
 
 int cmd_index_pack(int argc, const char **argv, const char *prefix)
@@ -1936,6 +1940,7 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
 	if (do_fsck_object && fsck_finish(&fsck_options))
 		die(_("fsck error in pack objects"));
 
+	free(opts.anomaly);
 	free(objects);
 	strbuf_release(&index_name_buf);
 	strbuf_release(&rev_index_name_buf);
diff --git a/builtin/merge-base.c b/builtin/merge-base.c
index 26b84980db..a11f8c6e4b 100644
--- a/builtin/merge-base.c
+++ b/builtin/merge-base.c
@@ -138,6 +138,7 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix)
 	int rev_nr = 0;
 	int show_all = 0;
 	int cmdmode = 0;
+	int ret;
 
 	struct option options[] = {
 		OPT_BOOL('a', "all", &show_all, N_("output all common ancestors")),
@@ -186,5 +187,7 @@ int cmd_merge_base(int argc, const char **argv, const char *prefix)
 	ALLOC_ARRAY(rev, argc);
 	while (argc-- > 0)
 		rev[rev_nr++] = get_commit_reference(*argv++);
-	return show_merge_base(rev, rev_nr, show_all);
+	ret = show_merge_base(rev, rev_nr, show_all);
+	free(rev);
+	return ret;
 }
diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
index 5518ed47f6..7f02e4352a 100644
--- a/builtin/sparse-checkout.c
+++ b/builtin/sparse-checkout.c
@@ -329,11 +329,11 @@ static int write_patterns_and_update(struct pattern_list *pl)
 
 	fd = hold_lock_file_for_update(&lk, sparse_filename,
 				      LOCK_DIE_ON_ERROR);
+	free(sparse_filename);
 
 	result = update_working_directory(pl);
 	if (result) {
 		rollback_lock_file(&lk);
-		free(sparse_filename);
 		clear_pattern_list(pl);
 		update_working_directory(NULL);
 		return result;
@@ -349,7 +349,6 @@ static int write_patterns_and_update(struct pattern_list *pl)
 	fflush(fp);
 	commit_lock_file(&lk);
 
-	free(sparse_filename);
 	clear_pattern_list(pl);
 
 	return 0;
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index d8638434dc..2f7c58362b 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -3309,6 +3309,7 @@ static int module_add(int argc, const char **argv, const char *prefix)
 {
 	int force = 0, quiet = 0, progress = 0, dissociate = 0;
 	struct add_data add_data = ADD_DATA_INIT;
+	char *to_free = NULL;
 
 	struct option options[] = {
 		OPT_STRING('b', "branch", &add_data.branch, N_("branch"),
@@ -3360,7 +3361,8 @@ static int module_add(int argc, const char **argv, const char *prefix)
 			      "of the working tree"));
 
 		/* dereference source url relative to parent's url */
-		add_data.realrepo = resolve_relative_url(add_data.repo, NULL, 1);
+		to_free = resolve_relative_url(add_data.repo, NULL, 1);
+		add_data.realrepo = to_free;
 	} else if (is_dir_sep(add_data.repo[0]) || strchr(add_data.repo, ':')) {
 		add_data.realrepo = add_data.repo;
 	} else {
@@ -3413,6 +3415,7 @@ static int module_add(int argc, const char **argv, const char *prefix)
 	}
 	configure_added_submodule(&add_data);
 	free(add_data.sm_path);
+	free(to_free);
 
 	return 0;
 }