diff options
Diffstat (limited to 'contrib/bind/include/isc/list.h')
| -rw-r--r-- | contrib/bind/include/isc/list.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/contrib/bind/include/isc/list.h b/contrib/bind/include/isc/list.h index febfbf8..21dd565 100644 --- a/contrib/bind/include/isc/list.h +++ b/contrib/bind/include/isc/list.h @@ -17,6 +17,7 @@ #ifndef LIST_H #define LIST_H 1 +#include <isc/assertions.h> #define LIST(type) struct { type *head, *tail; } #define INIT_LIST(list) \ @@ -28,7 +29,7 @@ (elt)->link.prev = (void *)(-1); \ (elt)->link.next = (void *)(-1); \ } while (0) -#define LINKED(elt, link) ((elt)->link.prev != (void *)(-1)) +#define LINKED(elt, link) ((void *)((elt)->link.prev) != (void *)(-1)) #define HEAD(list) ((list).head) #define TAIL(list) ((list).tail) @@ -36,6 +37,7 @@ #define PREPEND(list, elt, link) \ do { \ + INSIST(!LINKED(elt, link));\ if ((list).head != NULL) \ (list).head->link.prev = (elt); \ else \ @@ -47,6 +49,7 @@ #define APPEND(list, elt, link) \ do { \ + INSIST(!LINKED(elt, link));\ if ((list).tail != NULL) \ (list).tail->link.next = (elt); \ else \ @@ -58,6 +61,7 @@ #define UNLINK(list, elt, link) \ do { \ + INSIST(LINKED(elt, link));\ if ((elt)->link.next != NULL) \ (elt)->link.next->link.prev = (elt)->link.prev; \ else \ @@ -74,6 +78,7 @@ #define INSERT_BEFORE(list, before, elt, link) \ do { \ + INSIST(!LINKED(elt, link));\ if ((before)->link.prev == NULL) \ PREPEND(list, elt, link); \ else { \ @@ -86,6 +91,7 @@ #define INSERT_AFTER(list, after, elt, link) \ do { \ + INSIST(!LINKED(elt, link));\ if ((after)->link.next == NULL) \ APPEND(list, elt, link); \ else { \ |
