[PATCH v2 1/3] refs.c: make "repo_default_branch_name" static, remove xstrfmt()

From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
	"Andrzej Hunt" <andrzej@ahunt.org>,
	"Martin Ågren" <martin.agren@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: [PATCH v2 1/3] refs.c: make "repo_default_branch_name" static, remove xstrfmt()
Date: Thu, 21 Oct 2021 21:54:13 +0200	[thread overview]
Message-ID: <patch-v2-1.3-4f8554bb02e-20211021T195133Z-avarab@gmail.com> (raw)
In-Reply-To: <cover-v2-0.3-00000000000-20211021T195133Z-avarab@gmail.com>

The repo_default_branch_name() function introduced in
8747ebb7cde (init: allow setting the default for the initial branch
name via the config, 2020-06-24) has never been used outside of this
file, so let's make it static, its sibling function
git_default_branch_name() is what external callers use.

In addition the xstrfmt() to get the "full_ref" in the same commit
isn't needed, we can use the "REFNAME_ALLOW_ONELEVEL" flag to
check_refname_format() instead.

This also happens to fix an issue with c150064dbe2 (leak tests: run
various built-in tests in t00*.sh SANITIZE=leak, 2021-10-12) in "next"
when combined with SANITIZE=leak and higher optimization flags on at
least some GCC versions. See [1].

1. https://lore.kernel.org/git/patch-1.1-5a47bf2e9c9-20211021T114223Z-avarab@gmail.com/

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 refs.c | 8 +++-----
 refs.h | 1 -
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/refs.c b/refs.c
index 7f019c2377e..ccb09acbf1d 100644
--- a/refs.c
+++ b/refs.c
@@ -571,11 +571,11 @@ static const char default_branch_name_advice[] = N_(
 "\tgit branch -m <name>\n"
 );
 
-char *repo_default_branch_name(struct repository *r, int quiet)
+static char *repo_default_branch_name(struct repository *r, int quiet)
 {
 	const char *config_key = "init.defaultbranch";
 	const char *config_display_key = "init.defaultBranch";
-	char *ret = NULL, *full_ref;
+	char *ret = NULL;
 	const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME");
 
 	if (env && *env)
@@ -589,10 +589,8 @@ char *repo_default_branch_name(struct repository *r, int quiet)
 			advise(_(default_branch_name_advice), ret);
 	}
 
-	full_ref = xstrfmt("refs/heads/%s", ret);
-	if (check_refname_format(full_ref, 0))
+	if (check_refname_format(ret, REFNAME_ALLOW_ONELEVEL))
 		die(_("invalid branch name: %s = %s"), config_display_key, ret);
-	free(full_ref);
 
 	return ret;
 }
diff --git a/refs.h b/refs.h
index d5099d4984e..77f899da6ef 100644
--- a/refs.h
+++ b/refs.h
@@ -171,7 +171,6 @@ int dwim_log(const char *str, int len, struct object_id *oid, char **ref);
  * return value of `git_default_branch_name()` is a singleton.
  */
 const char *git_default_branch_name(int quiet);
-char *repo_default_branch_name(struct repository *r, int quiet);
 
 /*
  * A ref_transaction represents a collection of reference updates that
-- 
2.33.1.1494.g88b39a443e1

