util/rb_tree: Fix a compiler warning

Gcc 8 warns "cast to pointer from integer of different size" in 32-bit
builds.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>

diff --git a/src/util/rb_tree.h b/src/util/rb_tree.h
index e8750b32d0e91676c57d9410ba3bc0e5ad5b0a04..c77e9255ea2d6dfc6309a34546574f0ec1881397 100644 (file)
--- a/src/util/rb_tree.h
+++ b/src/util/rb_tree.h
@@ -55,7 +55,7 @@ struct rb_node {
 static inline struct rb_node *
 rb_node_parent(struct rb_node *n)
 {
 static inline struct rb_node *
 rb_node_parent(struct rb_node *n)
 {

-    return (struct rb_node *)(n->parent & ~1ull);
+    return (struct rb_node *)(n->parent & ~(uintptr_t)1);

 }
 
 /** A red-black tree
 }
 
 /** A red-black tree