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| author | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2018-01-03 15:40:49 +0100 |
|---|---|---|
| committer | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2018-06-13 05:49:23 +0200 |
| commit | 5fbbd26babaccac0ee3d6c6036fdea881298a627 (patch) | |
| tree | 14faedb1deaff87f9a82122018c55a58284e57fe | |
| parent | 320da0d6a1bfad5bad24600da763cdeabd30c5ba (diff) | |
| download | sparse-dev-5fbbd26babaccac0ee3d6c6036fdea881298a627.tar.gz | |
ptrlist: add helper PTR_UNTAG()
The macro PTR_ENTRY() need tp strip possible tag from the entry.
Let create a small helper for this 'untagging' operation.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
| -rw-r--r-- | ptrlist.h | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -61,8 +61,9 @@ extern int linearize_ptr_list(struct ptr_list *, void **, int); #define free_ptr_list(list) \ do { VRFY_PTR_LIST(*(list)); __free_ptr_list((struct ptr_list **)(list)); } while (0) +#define PTR_UNTAG(p) ((void*)(~3UL & (unsigned long)(p))) #define PTR_ENTRY_NOTAG(h,i) ((h)->list[i]) -#define PTR_ENTRY(h,i) (void *)(~3UL & (unsigned long)PTR_ENTRY_NOTAG(h,i)) +#define PTR_ENTRY(h,i) PTR_UNTAG((h)->list[i]) static inline void *first_ptr_list(struct ptr_list *list) { |