Re: [PATCH v1 1/2] submodule: port submodule subcommand 'sync' from shell to C

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Prathamesh Chavan <pc44800@xxxxxxxxx> writes:

> +static int print_default_remote(int argc, const char **argv, const char *prefix)
> +{
> +	const char *remote;
> +
> +	if (argc != 1)
> +		die(_("submodule--helper print-default-remote takes no arguments"));
> +
> +	remote = get_default_remote();
> +	if (remote)
> +		printf("%s\n", remote);
> +
> +	return 0;
> +}

This is called directly from main and return immediately after
printing, so a small leak of remote does not matter, I guess.

> +static void sync_submodule(const char *path, const char *prefix,
> +			   unsigned int flags)
> +{
> +	const struct submodule *sub;
> +	char *remote_key = NULL;
> +	char *sub_origin_url, *super_config_url, *displaypath;
> +	struct strbuf sb = STRBUF_INIT;
> +	struct child_process cp = CHILD_PROCESS_INIT;
> +	char *sub_config_path = NULL;
> +
> +	if (!is_submodule_active(the_repository, path))
> +		return;
> +
> +	sub = submodule_from_path(&null_oid, path);
> +
> +	if (sub && sub->url) {
> +		if (starts_with_dot_dot_slash(sub->url) || starts_with_dot_slash(sub->url)) {

Not a big deal, but other codepaths seem to fold this pattern into
two lines, i.e.

		if (starts_with_dot_dot_slash(sub->url) ||
		    starts_with_dot_slash(sub->url)) {

> +			sub_origin_url = relative_url(remote_url, sub->url, up_path);
> +			super_config_url = relative_url(remote_url, sub->url, NULL);

On this side, these two are allocated memory that need to be freed.

> +		} else {
> +			sub_origin_url = xstrdup(sub->url);
> +			super_config_url = xstrdup(sub->url);

This side as well.

> +		}
> +	} else {
> +		sub_origin_url = "";
> +		super_config_url = "";

But not these.  You have free() of these two at the end of this
function, which will break things.




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