[RFC PATCH 5/5] strvec API users: fix more leaks by using "STRVEC_INIT_NODUP"

[Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>]

For these cases where most of the the strings we were pushing to the
"struct strvec" were fixed strings, but others are dynamically
allocated. For the latter we keep around a "to_free" list of them.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 builtin/describe.c       | 22 +++++++++++++++++-----
 builtin/upload-archive.c |  9 +++++++--
 t/t5003-archive-zip.sh   |  1 +
 3 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/builtin/describe.c b/builtin/describe.c
index cb205f6b561..eda59ebb19a 100644
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -596,8 +596,10 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
 		die(_("options '%s' and '%s' cannot be used together"), "--long", "--abbrev=0");
 
 	if (contains) {
+		struct string_list to_free = STRING_LIST_INIT_DUP;
 		struct string_list_item *item;
-		struct strvec args = STRVEC_INIT;
+		struct strvec args = STRVEC_INIT_NODUP;
+
 		int ret;
 
 		strvec_pushl(&args, "name-rev",
@@ -607,10 +609,19 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
 			strvec_push(&args, "--always");
 		if (!all) {
 			strvec_push(&args, "--tags");
-			for_each_string_list_item(item, &patterns)
-				strvec_pushf(&args, "--refs=refs/tags/%s", item->string);
-			for_each_string_list_item(item, &exclude_patterns)
-				strvec_pushf(&args, "--exclude=refs/tags/%s", item->string);
+			for_each_string_list_item(item, &patterns) {
+				char *str = xstrfmt("--refs=refs/tags/%s", item->string);
+				const char *item = string_list_append_nodup(&to_free, str)->string;
+
+				strvec_push(&args, item);
+			}
+			for_each_string_list_item(item, &exclude_patterns) {
+				char *str = xstrfmt("--exclude=refs/tags/%s", item->string);
+
+				const char *item = string_list_append_nodup(&to_free, str)->string;
+
+				strvec_push(&args, item);
+			}
 		}
 		if (argc)
 			strvec_pushv(&args, argv);
@@ -618,6 +629,7 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
 			strvec_push(&args, "HEAD");
 		ret = cmd_name_rev(args.nr, args.v, prefix);
 		strvec_clear(&args);
+		string_list_clear(&to_free, 0);
 		return ret;
 	}
 
diff --git a/builtin/upload-archive.c b/builtin/upload-archive.c
index 6ef0d06ee8b..95c6cdc4be0 100644
--- a/builtin/upload-archive.c
+++ b/builtin/upload-archive.c
@@ -19,7 +19,8 @@ static const char deadchild[] =
 
 int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
 {
-	struct strvec sent_argv = STRVEC_INIT;
+	struct string_list to_free = STRING_LIST_INIT_DUP;
+	struct strvec sent_argv = STRVEC_INIT_NODUP;
 	const char *arg_cmd = "argument ";
 	int ret;
 
@@ -34,6 +35,7 @@ int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
 	/* put received options in sent_argv[] */
 	strvec_push(&sent_argv, "git-upload-archive");
 	for (;;) {
+		struct string_list_item *item;
 		char *buf = packet_read_line(0, NULL);
 		if (!buf)
 			break;	/* got a flush */
@@ -42,13 +44,16 @@ int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
 
 		if (!starts_with(buf, arg_cmd))
 			die("'argument' token or flush expected");
-		strvec_push(&sent_argv, buf + strlen(arg_cmd));
+
+		item = string_list_append(&to_free, buf + strlen(arg_cmd));
+		strvec_push(&sent_argv, item->string);
 	}
 
 	/* parse all options sent by the client */
 	ret = write_archive(sent_argv.nr, sent_argv.v, prefix,
 			    the_repository, NULL, 1);
 	strvec_clear(&sent_argv);
+	string_list_clear(&to_free, 0);
 	return ret;
 }
 
diff --git a/t/t5003-archive-zip.sh b/t/t5003-archive-zip.sh
index fc499cdff01..cc1ce060558 100755
--- a/t/t5003-archive-zip.sh
+++ b/t/t5003-archive-zip.sh
@@ -2,6 +2,7 @@
 
 test_description='git archive --format=zip test'
 
+TEST_PASSES_SANITIZE_LEAK=true
 TEST_CREATE_REPO_NO_TEMPLATE=1
 . ./test-lib.sh
 
-- 
2.39.0.rc2.1048.g0e5493b8d5b