Re: [PATCH 2/2] diff-no-index: release prefixed filenames

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Hi René,

On Tue, 6 Sep 2022, René Scharfe wrote:

> diff --git a/diff-no-index.c b/diff-no-index.c
> index a3683d8a04..35809f26d7 100644
> --- a/diff-no-index.c
> +++ b/diff-no-index.c
> @@ -245,6 +245,7 @@ int diff_no_index(struct rev_info *revs,
>  	int i, no_index;
>  	int ret = 1;
>  	const char *paths[2];
> +	char *to_free[2] = { 0 };
>  	struct strbuf replacement = STRBUF_INIT;
>  	const char *prefix = revs->prefix;
>  	struct option no_index_options[] = {
> @@ -274,7 +275,7 @@ int diff_no_index(struct rev_info *revs,
>  			 */
>  			p = file_from_standard_input;
>  		else if (prefix)
> -			p = prefix_filename(prefix, p);
> +			p = to_free[i] = prefix_filename(prefix, p);
>  		paths[i] = p;
>  	}
>
> @@ -308,6 +309,8 @@ int diff_no_index(struct rev_info *revs,
>  	ret = diff_result_code(&revs->diffopt, 0);
>
>  out:
> +	for (i = 0; i < 2; i++)
> +		free(to_free[i]);

Heh. That's long-hand for

	free(to_free[0]);
	free(to_free[1]);

If you do want to have that loop, please replace the hard-coded 2 by
`ARRAY_SIZE(to_free)`.

Otherwise, both patches look fine to me.

Thanks!
Dscho

>  	strbuf_release(&replacement);
>  	return ret;
>  }
> --
> 2.37.2
>

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