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worktree: fix leak in check_clean_worktree()

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We allocate a child_env strvec but never free its memory. Instead, let's
just use the strvec that our child_process struct provides, which is
cleaned up automatically when we run the command.

And while we're moving the initialization of the child_process around,
let's switch it to use the official init function (zero-initializing it
works OK, since strvec is happy enough with that, but it sets a bad
example).

Signed-off-by: Jeff King <peff@peff.net>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2020-08-27 01:25:04 -04:00 committed by Junio C Hamano
parent 47ae905ffb
commit 27ed6ccc12
1 changed files with 3 additions and 5 deletions
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8
builtin/worktree.c
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@ -924,7 +924,6 @@ static int move_worktree(int ac, const char **av, const char *prefix)
static void check_clean_worktree(struct worktree *wt,
const char *original_path)
{
struct argv_array child_env = ARGV_ARRAY_INIT;
struct child_process cp;
char buf[1];
int ret;
@ -935,15 +934,14 @@ static void check_clean_worktree(struct worktree *wt,
*/
validate_no_submodules(wt);
argv_array_pushf(&child_env, "%s=%s/.git",
child_process_init(&cp);
argv_array_pushf(&cp.env_array, "%s=%s/.git",
GIT_DIR_ENVIRONMENT, wt->path);
argv_array_pushf(&child_env, "%s=%s",
argv_array_pushf(&cp.env_array, "%s=%s",
GIT_WORK_TREE_ENVIRONMENT, wt->path);
memset(&cp, 0, sizeof(cp));
argv_array_pushl(&cp.args, "status",
"--porcelain", "--ignore-submodules=none",
NULL);
cp.env = child_env.argv;
cp.git_cmd = 1;
cp.dir = wt->path;
cp.out = -1;