Re: PATCH] bisect--helper: plug strvec leak in bisect_start()

[Junio C Hamano <gitster@pobox.com>]

René Scharfe <l.s.r@web.de> writes:

> The strvec "argv" is used to build a command for run_command_v_opt(),
> but never freed.  Use the "args" strvec of struct child_process and
> run_command() instead, which releases the allocated memory both on
> success and on error.  We just also need to set the "git_cmd" bit
> directly.

Well reasoned and explained.

Thanks.

>
> Signed-off-by: René Scharfe <l.s.r@web.de>
> ---
>  builtin/bisect--helper.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
> index 501245fac9..9fe0c08479 100644
> --- a/builtin/bisect--helper.c
> +++ b/builtin/bisect--helper.c
> @@ -765,11 +765,12 @@ static enum bisect_error bisect_start(struct bisect_terms *terms, const char **a
>  		strbuf_read_file(&start_head, git_path_bisect_start(), 0);
>  		strbuf_trim(&start_head);
>  		if (!no_checkout) {
> -			struct strvec argv = STRVEC_INIT;
> +			struct child_process cmd = CHILD_PROCESS_INIT;
>
> -			strvec_pushl(&argv, "checkout", start_head.buf,
> +			cmd.git_cmd = 1;
> +			strvec_pushl(&cmd.args, "checkout", start_head.buf,
>  				     "--", NULL);
> -			if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
> +			if (run_command(&cmd)) {
>  				res = error(_("checking out '%s' failed."
>  						 " Try 'git bisect start "
>  						 "<valid-branch>'."),
> --
> 2.37.3