Thread (162 messages) 162 messages, 2 authors, 2022-09-01
STALE1368d

[PATCH v4 16/17] submodule--helper: free rest of "displaypath" in "struct update_data"

From: Ævar Arnfjörð Bjarmason <hidden>
Date: 2022-07-28 16:31:15
Subsystem: the rest · Maintainer: Linus Torvalds

Fix a leak in code added in c51f8f94e5b (submodule--helper: run update
procedures from C, 2021-08-24), we clobber the "displaypath" member of
the passed-in "struct update_data" both so that die() messages in this
update_submodule() function itself can use it, and for the
run_update_procedure() called within this function.

Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
 builtin/submodule--helper.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 2e39750fb06..2a171d25992 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -2460,10 +2460,11 @@ static int update_submodule(struct update_data *update_data,
 			    int *must_die_on_failure)
 {
 	int ret = 1;
+	char *to_free, *restore = update_data->displaypath;
 
 	ensure_core_worktree(update_data->sm_path);
 
-	update_data->displaypath = get_submodule_displaypath(
+	update_data->displaypath = to_free = get_submodule_displaypath(
 		update_data->sm_path, update_data->prefix);
 
 	determine_submodule_update_strategy(the_repository, update_data->just_cloned,
@@ -2537,6 +2538,9 @@ static int update_submodule(struct update_data *update_data,
 
 	ret = 0;
 cleanup:
+	free(to_free);
+	update_data->displaypath = restore;
+
 	return ret;
 }
 
-- 
2.37.1.1197.g7ed548b7807
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