diff options
| -rw-r--r-- | stc/clist.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/stc/clist.h b/stc/clist.h index 31d6ec88..c424d439 100644 --- a/stc/clist.h +++ b/stc/clist.h @@ -305,14 +305,13 @@ STC_API size_t _clist_size(const clist_void* self); \
STC_DEF clist_##X \
clist_##X##_split(clist_##X* self, clist_##X##_iter_t pos1, clist_##X##_iter_t pos2) { \
- clist_##X##_node_t *p1 = pos1.ref ? pos1._prev : NULL, \
- *p2 = pos2.ref ? pos2._prev : self->last; \
clist_##X list = {NULL}; \
- if (p1 && p2) { \
- p1->next = p2->next, p2->next = _clist_node(X, pos1.ref); \
- if (self->last == p2) self->last = pos2.ref ? p1 : NULL; \
- list.last = p2; \
- } \
+ if (pos1.ref == pos2.ref) return list; \
+ clist_##X##_node_t *p1 = pos1._prev, \
+ *p2 = pos2.ref ? pos2._prev : self->last; \
+ p1->next = p2->next, p2->next = _clist_node(X, pos1.ref); \
+ if (self->last == p2) self->last = (p1 == p2) ? NULL : p1; \
+ list.last = p2; \
return list; \
} \
\
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