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| author | Jeff Garzik <jeff@garzik.org> | 2006-09-30 23:45:41 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-09-30 23:45:41 -0400 |
| commit | 1c7da74c4aab595a994beb5fe728ebf0d0b41f59 (patch) | |
| tree | 64128abdf9550ebb51d8f3ee6732d7350b9c62f2 /lib/rbtree.c | |
| parent | aebb1153ac54ddbbd3d3f0481a193f4bf0ead53b (diff) | |
| parent | 1bdfd554be94def718323659173517c5d4a69d25 (diff) | |
Merge branch 'master' into upstream
Diffstat (limited to 'lib/rbtree.c')
| -rw-r--r-- | lib/rbtree.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/rbtree.c b/lib/rbtree.c index 1e55ba1c2ed..48499c2d88c 100644 --- a/lib/rbtree.c +++ b/lib/rbtree.c @@ -322,6 +322,9 @@ struct rb_node *rb_next(struct rb_node *node) { struct rb_node *parent; + if (rb_parent(node) == node) + return NULL; + /* If we have a right-hand child, go down and then left as far as we can. */ if (node->rb_right) { @@ -348,6 +351,9 @@ struct rb_node *rb_prev(struct rb_node *node) { struct rb_node *parent; + if (rb_parent(node) == node) + return NULL; + /* If we have a left-hand child, go down and then right as far as we can. */ if (node->rb_left) { |