Subject: Re: [PATCH 1/2] index-pack: reduce object_entry size to save memory

From: Junio C Hamano <[email-masked]>
Date: Sun, 22 Feb 2015 18:37:03 -0800

Nguyễn Thái Ngọc Duy  <[email-masked]> writes:

> diff --git a/builtin/index-pack.c b/builtin/index-pack.c
> index 4632117..07b2c0c 100644
> --- a/builtin/index-pack.c
> +++ b/builtin/index-pack.c
> @@ -18,9 +18,12 @@ static const char index_pack_usage[] =
>  struct object_entry {
>  	struct pack_idx_entry idx;
>  	unsigned long size;
> -	unsigned int hdr_size;
> -	enum object_type type;
> -	enum object_type real_type;
> +	unsigned char hdr_size;
> +	char type;
> +	char real_type;

Don't you need these two fields to be able to hold a negative value
like OBJ_BAD (= -1)?  You'd need to spell "signed char" out here.