diff options
| -rw-r--r-- | Modules/gcmodule.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c index 4bfdea643a..c563ed84d2 100644 --- a/Modules/gcmodule.c +++ b/Modules/gcmodule.c @@ -168,14 +168,16 @@ gc_list_remove(PyGC_Head *node) static void gc_list_move(PyGC_Head *node, PyGC_Head *list) { + PyGC_Head *new_prev; PyGC_Head *current_prev = node->gc.gc_prev; PyGC_Head *current_next = node->gc.gc_next; - PyGC_Head *new_prev = list->gc.gc_prev; + /* Unlink from current list. */ current_prev->gc.gc_next = current_next; current_next->gc.gc_prev = current_prev; - node->gc.gc_next = list; - node->gc.gc_prev = new_prev; + /* Relink at end of new list. */ + new_prev = node->gc.gc_prev = list->gc.gc_prev; new_prev->gc.gc_next = list->gc.gc_prev = node; + node->gc.gc_next = list; } /* append list `from` onto list `to`; `from` becomes an empty list */ |