submodule--helper: add and use *_release() functions

Add release functions for "struct module_list", "struct
submodule_update_clone" and "struct update_data".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Reviewed-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/submodule--helper.c

@@ -172,6 +172,11 @@ struct module_list {
 };
 #define MODULE_LIST_INIT { 0 }
 
+static void module_list_release(struct module_list *ml)
+{
+	free(ml->entries);
+}
+
 static int module_list_compute(int argc, const char **argv,
 			       const char *prefix,
 			       struct pathspec *pathspec,
@@ -234,7 +239,7 @@ static void module_list_active(struct module_list *list)
 		active_modules.entries[active_modules.nr++] = ce;
 	}
 
-	free(list->entries);
+	module_list_release(list);
 	*list = active_modules;
 }
 
@@ -407,6 +412,7 @@ static int module_foreach(int argc, const char **argv, const char *prefix)
 
 	ret = 0;
 cleanup:
+	module_list_release(&list);
 	clear_pathspec(&pathspec);
 	return ret;
 }
@@ -553,6 +559,7 @@ static int module_init(int argc, const char **argv, const char *prefix)
 
 	ret = 0;
 cleanup:
+	module_list_release(&list);
 	clear_pathspec(&pathspec);
 	return ret;
 }
@@ -730,6 +737,7 @@ static int module_status(int argc, const char **argv, const char *prefix)
 
 	ret = 0;
 cleanup:
+	module_list_release(&list);
 	clear_pathspec(&pathspec);
 	return ret;
 }
@@ -1302,6 +1310,7 @@ static int module_sync(int argc, const char **argv, const char *prefix)
 
 	ret = 0;
 cleanup:
+	module_list_release(&list);
 	clear_pathspec(&pathspec);
 	return ret;
 }
@@ -1454,6 +1463,7 @@ static int module_deinit(int argc, const char **argv, const char *prefix)
 
 	ret = 0;
 cleanup:
+	module_list_release(&list);
 	clear_pathspec(&pathspec);
 	return ret;
 }
@@ -1831,6 +1841,12 @@ struct submodule_update_clone {
 };
 #define SUBMODULE_UPDATE_CLONE_INIT { 0 }
 
+static void submodule_update_clone_release(struct submodule_update_clone *suc)
+{
+	free(suc->update_clone);
+	free(suc->failed_clones);
+}
+
 struct update_data {
 	const char *prefix;
 	const char *displaypath;
@@ -1869,6 +1885,11 @@ struct update_data {
 	.max_jobs = 1, \
 }
 
+static void update_data_release(struct update_data *ud)
+{
+	module_list_release(&ud->list);
+}
+
 static void next_submodule_warn_missing(struct submodule_update_clone *suc,
 		struct strbuf *out, const char *displaypath)
 {
@@ -2554,6 +2575,7 @@ static int update_submodules(struct update_data *update_data)
 	}
 
 cleanup:
+	submodule_update_clone_release(&suc);
 	string_list_clear(&update_data->references, 0);
 	return ret;
 }
@@ -2651,6 +2673,7 @@ static int module_update(int argc, const char **argv, const char *prefix)
 
 		if (module_list_compute(argc, argv, opt.prefix,
 					&pathspec2, &list) < 0) {
+			module_list_release(&list);
 			ret = 1;
 			goto cleanup;
 		}
@@ -2667,10 +2690,12 @@ static int module_update(int argc, const char **argv, const char *prefix)
 			info.flags |= OPT_QUIET;
 
 		for_each_listed_submodule(&list, init_submodule_cb, &info);
+		module_list_release(&list);
 	}
 
 	ret = update_submodules(&opt);
 cleanup:
+	update_data_release(&opt);
 	list_objects_filter_release(&filter_options);
 	clear_pathspec(&pathspec);
 	clear_pathspec(&pathspec2);
@@ -2786,6 +2811,7 @@ static int absorb_git_dirs(int argc, const char **argv, const char *prefix)
 	ret = 0;
 cleanup:
 	clear_pathspec(&pathspec);
+	module_list_release(&list);
 	return ret;
 }
 

t/t6134-pathspec-in-submodule.sh

@@ -2,6 +2,7 @@
 
 test_description='test case exclude pathspec'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup a submodule' '