[Tarantool-patches] [PATCH v2 1/2] b-tree: return NULL on matras_alloc fail

[Ilya Kosarev]

Hi!
 
Thanks for the review. Remarks fixed in v3.
 
>Среда, 15 января 2020, 0:00 +03:00 от Vladislav Shpilevoy < v.shpilevoy at tarantool.org >:
>  
>Hi! Thanks for the patch!
>
>On 13/01/2020 22:31, Ilya Kosarev wrote:
>> In bps_tree_create_leaf we use matras_alloc in case
>> bps_tree_garbage_pop didn't work out. However it also might not
>> succeed. Then we need to return NULL instead of dereferencing NULL
>> pointer.
>>
>> Part of: #3807
>
>Please, drop ':', we don't use it when reference tickets.
>
>> ---
>> src/lib/salad/bps_tree.h | 7 +++++--
>> 1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/src/lib/salad/bps_tree.h b/src/lib/salad/bps_tree.h
>> index d28b53f53..ede2a3b7f 100644
>> --- a/src/lib/salad/bps_tree.h
>> +++ b/src/lib/salad/bps_tree.h
>> @@ -2147,8 +2147,11 @@ bps_tree_create_leaf(struct bps_tree *tree, bps_tree_block_id_t *id)
>> {
>> struct bps_leaf *res = (struct bps_leaf *)
>> bps_tree_garbage_pop(tree, id);
>> - if (!res)
>> - res = (struct bps_leaf *)matras_alloc(&tree->matras, id);
>> + if (!res) {
>> + res = (struct bps_leaf *) matras_alloc(&tree->matras, id);
>> + if (!res)
>> + return NULL;
>> + }
>
>Since you've changed this code anyway, lets use explicit
>'== NULL' instead of '!'. 
 
 
--
Ilya Kosarev
 
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