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Better const cast logic

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(although still gcc gives const violation warning)
This commit is contained in:
Zdenek Kabelac 2011-04-08 14:14:57 +00:00
parent 45109d497c
commit 040cdff1d4
1 changed files with 4 additions and 4 deletions
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8
lib/datastruct/btree.c
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@ -55,7 +55,7 @@ static uint32_t _shuffle(uint32_t k)
#endif
}
static struct node **_lookup(struct node *const *c, uint32_t key,
static struct node *const *_lookup(struct node *const *c, uint32_t key,
struct node **p)
{
*p = NULL;
@ -71,20 +71,20 @@ static struct node **_lookup(struct node *const *c, uint32_t key,
c = &(*c)->r;
}
return (struct node **)c;
return c;
}
void *btree_lookup(const struct btree *t, uint32_t k)
{
uint32_t key = _shuffle(k);
struct node *p, **c = _lookup(&t->root, key, &p);
struct node *p, *const *c = _lookup(&t->root, key, &p);
return (*c) ? (*c)->data : NULL;
}
int btree_insert(struct btree *t, uint32_t k, void *data)
{
uint32_t key = _shuffle(k);
struct node *p, **c = _lookup(&t->root, key, &p), *n;
struct node *p, **c = (struct node **) _lookup(&t->root, key, &p), *n;
if (!*c) {
if (!(n = dm_pool_alloc(t->mem, sizeof(*n))))