Re: [PATCH 05/15] log: report errno on failure to fopen() a file

[Jeff King <peff@peff.net>]

On Thu, Apr 20, 2017 at 06:25:59PM +0700, Nguyễn Thái Ngọc Duy wrote:

> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> ---
>  builtin/log.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/builtin/log.c b/builtin/log.c
> index b3b10cc1ed..26d6a3cf14 100644
> --- a/builtin/log.c
> +++ b/builtin/log.c
> @@ -858,7 +858,8 @@ static int open_next_file(struct commit *commit, const char *subject,
>  		printf("%s\n", filename.buf + outdir_offset);
>  
>  	if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL)
> -		return error(_("Cannot open patch file %s"), filename.buf);
> +		return error_errno(_("Cannot open patch file %s"),
> +				   filename.buf);
>  
>  	strbuf_release(&filename);
>  	return 0;

Not a new problem with your patch, but just looking at the context it
seems clear that "filename" is leaked in the error case.

-Peff