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[PATCH] leak tests: free() before die for two API functions

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Oct 21, 2021, 11:42 UTC
Message-ID
<patch-1.1-5a47bf2e9c9-20211021T114223Z-avarab@gmail.com>

Call free() just before die() in two API functions whose tests are asserted under SANITIZE=leak. Normally this would not be needed due to how SANITIZE=leak works, but in these cases my GCC version (10.2.1-6) will fail tests t0001 and t0017 under SANITIZE=leak depending on the optimization level.

See 956d2e4639b (tests: add a test mode for SANITIZE=leak, run it in CI, 2021-09-23) for the commit that marked t0017 for testing with SANITIZE=leak, and c150064dbe2 (leak tests: run various built-in tests in t00*.sh SANITIZE=leak, 2021-10-12) for t0001 (currently in "next").

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 config.c | 4 +++-
 refs.c   | 5 ++++-
 2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/config.c b/config.c
index 2dcbe901b6b..93979d39b21 100644
--- a/config.c
+++ b/config.c
@@ -159,11 +159,13 @@ static int handle_path_include(const char *path, struct config_include_data *inc
 	}
 
 	if (!access_or_die(path, R_OK, 0)) {
-		if (++inc->depth > MAX_INCLUDE_DEPTH)
+		if (++inc->depth > MAX_INCLUDE_DEPTH) {
+			free(expanded);
 			die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path,
 			    !cf ? "<unknown>" :
 			    cf->name ? cf->name :
 			    "the command line");
+		}
 		ret = git_config_from_file(git_config_include, path, inc);
 		inc->depth--;
 	}
diff --git a/refs.c b/refs.c
index 7f019c2377e..52929286032 100644
--- a/refs.c
+++ b/refs.c
@@ -590,8 +590,11 @@ char *repo_default_branch_name(struct repository *r, int quiet)
 	}
 
 	full_ref = xstrfmt("refs/heads/%s", ret);
-	if (check_refname_format(full_ref, 0))
+	if (check_refname_format(full_ref, 0)) {
+		free(ret);
+		free(full_ref);
 		die(_("invalid branch name: %s = %s"), config_display_key, ret);
+	}
 	free(full_ref);
 
 	return ret;
-- 
2.33.1.1486.gb2bc4955b90
Next: Andrzej Hunt
Message 1 of 26 in “leak tests: free() before die for two API functions”
  1. leak tests: free() before die for two API functionsÆvar Arnfjörð Bjarmason, Oct 21, 2021
  2. Andrzej HuntOct 21, 2021
  3. Junio C HamanoOct 21, 2021
  4. Martin ÅgrenOct 21, 2021
  5. 0/3 refs.c + config.c: plug memory leaksÆvar Arnfjörð Bjarmason, Oct 21, 2021
  6. 2/3 config.c: don't leak memory in handle_path_include()Ævar Arnfjörð Bjarmason, Oct 21, 2021
  7. Junio C HamanoOct 21, 2021
  8. Ævar Arnfjörð BjarmasonOct 22, 2021
  9. Junio C HamanoOct 22, 2021
  10. Ævar Arnfjörð BjarmasonOct 22, 2021
  11. 1/3 refs.c: make "repo_default_branch_name" static, remove xstrfmt()Ævar Arnfjörð Bjarmason, Oct 21, 2021
  12. Junio C HamanoOct 21, 2021
  13. 3/3 config.c: free(expanded) before die(), work around GCC oddityÆvar Arnfjörð Bjarmason, Oct 21, 2021
  14. Junio C HamanoOct 21, 2021
  15. 0/6 usage.c: add die_message() & plug memory leaks in refs.c & config.cÆvar Arnfjörð Bjarmason, Oct 22, 2021
  16. 1/6 usage.c: add a die_message() routineÆvar Arnfjörð Bjarmason, Oct 22, 2021
  17. Junio C HamanoOct 24, 2021
  18. 2/6 usage.c API users: use die_message() where appropriateÆvar Arnfjörð Bjarmason, Oct 22, 2021
  19. 3/6 usage.c + gc: add and use a die_message_errno()Ævar Arnfjörð Bjarmason, Oct 22, 2021
  20. Junio C HamanoOct 24, 2021
  21. 4/6 config.c: don't leak memory in handle_path_include()Ævar Arnfjörð Bjarmason, Oct 22, 2021
  22. Junio C HamanoOct 24, 2021
  23. 5/6 config.c: free(expanded) before die(), work around GCC oddityÆvar Arnfjörð Bjarmason, Oct 22, 2021
  24. Jeff KingOct 26, 2021
  25. 6/6 refs: plug memory leak in repo_default_branch_name()Ævar Arnfjörð Bjarmason, Oct 22, 2021
  26. Jonathan TanOct 27, 2021

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