[PATCH v2 04/23] submodule: fix leaking update strategy

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We're not freeing the submodule update strategy command. Provide a
helper function that does this for us and call it in
`update_data_release()`.

Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
---
 builtin/submodule--helper.c | 1 +
 submodule-config.c          | 2 +-
 submodule.c                 | 5 +++++
 submodule.h                 | 6 ++++--
 t/t7406-submodule-update.sh | 1 +
 5 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index bf8f9a4012..ed05dc5134 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -2021,6 +2021,7 @@ struct update_data {
 static void update_data_release(struct update_data *ud)
 {
 	free(ud->displaypath);
+	submodule_update_strategy_release(&ud->update_strategy);
 	module_list_release(&ud->list);
 }
 
diff --git a/submodule-config.c b/submodule-config.c
index c8f2bb2bdd..471637a725 100644
--- a/submodule-config.c
+++ b/submodule-config.c
@@ -95,7 +95,7 @@ static void free_one_config(struct submodule_entry *entry)
 	free((void *) entry->config->branch);
 	free((void *) entry->config->url);
 	free((void *) entry->config->ignore);
-	free((void *) entry->config->update_strategy.command);
+	submodule_update_strategy_release(&entry->config->update_strategy);
 	free(entry->config);
 }
 
diff --git a/submodule.c b/submodule.c
index 97d0d47b56..0e67984d77 100644
--- a/submodule.c
+++ b/submodule.c
@@ -424,6 +424,11 @@ int parse_submodule_update_strategy(const char *value,
 	return 0;
 }
 
+void submodule_update_strategy_release(struct submodule_update_strategy *strategy)
+{
+	free((char *) strategy->command);
+}
+
 const char *submodule_update_type_to_string(enum submodule_update_type type)
 {
 	switch (type) {
diff --git a/submodule.h b/submodule.h
index b50d29eba4..4deb1b5f84 100644
--- a/submodule.h
+++ b/submodule.h
@@ -41,6 +41,10 @@ struct submodule_update_strategy {
 	.type = SM_UPDATE_UNSPECIFIED, \
 }
 
+int parse_submodule_update_strategy(const char *value,
+				    struct submodule_update_strategy *dst);
+void submodule_update_strategy_release(struct submodule_update_strategy *strategy);
+
 int is_gitmodules_unmerged(struct index_state *istate);
 int is_writing_gitmodules_ok(void);
 int is_staging_gitmodules_ok(struct index_state *istate);
@@ -70,8 +74,6 @@ void die_in_unpopulated_submodule(struct index_state *istate,
 void die_path_inside_submodule(struct index_state *istate,
 			       const struct pathspec *ps);
 enum submodule_update_type parse_submodule_update_type(const char *value);
-int parse_submodule_update_strategy(const char *value,
-				    struct submodule_update_strategy *dst);
 const char *submodule_update_type_to_string(enum submodule_update_type type);
 void handle_ignore_submodules_arg(struct diff_options *, const char *);
 void show_submodule_diff_summary(struct diff_options *o, const char *path,
diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 297c6c3b5c..0f0c86f9cb 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -12,6 +12,7 @@ submodule and "git submodule update --rebase/--merge" does not detach the HEAD.
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 
-- 
2.46.2.852.g229c0bf0e5.dirty





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