Re: [PATCH 3/4] unpack-trees: trivial cleanup

2013-06-03 Thread Felipe Contreras
On Mon, Jun 3, 2013 at 12:13 PM, Junio C Hamano  wrote:
> Felipe Contreras  writes:
>
>> dfc has not been initialized at this point.
>>
>> Signed-off-by: Felipe Contreras 
>> ---
>
> Upon the first entry to this function, because dfc is
>
> static struct cache_entry *dfc;

Ah, I didn't notice it's static. Smells error-prone, but I guess it's
OK for now.

-- 
Felipe Contreras
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Re: [PATCH 3/4] unpack-trees: trivial cleanup

2013-06-03 Thread Junio C Hamano
Felipe Contreras  writes:

> dfc has not been initialized at this point.
>
> Signed-off-by: Felipe Contreras 
> ---

Upon the first entry to this function, because dfc is 

static struct cache_entry *dfc;

it is NULL.  In that case, we allocate one instance.  When the
function is called again, we can reuse the entry, because it merely
acts as a unique sentinel value.

And we do not free() it.

>  unpack-trees.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/unpack-trees.c b/unpack-trees.c
> index ede4299..36f4ff7 100644
> --- a/unpack-trees.c
> +++ b/unpack-trees.c
> @@ -1040,8 +1040,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, 
> struct unpack_trees_options
>   if (!o->skip_sparse_checkout)
>   mark_new_skip_worktree(o->el, o->src_index, 0, 
> CE_NEW_SKIP_WORKTREE);
>  
> - if (!dfc)
> - dfc = xcalloc(1, cache_entry_size(0));
> + dfc = xcalloc(1, cache_entry_size(0));
>   o->df_conflict_entry = dfc;
>  
>   if (len) {
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