Constify read-only arguments.

diff --git a/ez-node.h b/ez-node.h
index 74f12bb..7e3a7d5 100644 (file)
--- a/ez-node.h
+++ b/ez-node.h
@@ -139,12 +139,11 @@ struct ez_string_node {
 #include <string.h>
 
 // see also ez-set.h ez_string_node_hash()
-
-static __inline__ int ez_string_node_equals(void *a, void *b) {
+static __inline__ int ez_string_node_equals(const void *a, const void *b) {
        return strcmp(((struct ez_string_node *)a)->name, ((struct ez_string_node *)b)->name) == 0;
 }
 
-static __inline__ int ez_string_node_cmp(void *a, void *b) {
+static __inline__ int ez_string_node_cmp(const void *a, const void *b) {
        return strcmp(((struct ez_string_node *)a)->name, ((struct ez_string_node *)b)->name);
 }
 

diff --git a/ez-tree.c b/ez-tree.c
index ee6d390..5ebb2af 100644 (file)
--- a/ez-tree.c
+++ b/ez-tree.c
@@ -403,7 +403,7 @@ static void *ez_tree_scan_dir(ez_tree_scan *scan, enum ez_node_link_t dir) {
        }
 }
 
-void *ez_tree_scan_init_key(ez_tree *tree, ez_tree_scan *scan, enum ez_node_link_t scan_dir, enum ez_node_link_t key_dir, void *key) {
+void *ez_tree_scan_init_key(ez_tree *tree, ez_tree_scan *scan, enum ez_node_link_t scan_dir, enum ez_node_link_t key_dir, const void *key) {
        struct ez_node *p = ez_node_right(&tree->root);
        ez_cmp_fn node_cmp = tree->node_cmp;
        int l = 0;

diff --git a/ez-tree.h b/ez-tree.h
index 6ecb3ce..83c9b7a 100644 (file)
--- a/ez-tree.h
+++ b/ez-tree.h
@@ -172,8 +172,7 @@ void *ez_tree_remove(ez_tree *tree, const void *key_node);
  * @param key_node optional key node for starting point.
  * @return The found node if any is returned.
  */
-void *ez_tree_scan_init_key(ez_tree *tree, ez_tree_scan *scan, enum ez_node_link_t scan_dir, enum ez_node_link_t key_dir, void *key_node);
-
+void *ez_tree_scan_init_key(ez_tree *tree, ez_tree_scan *scan, enum ez_node_link_t scan_dir, enum ez_node_link_t key_dir, const void *key_node);
 
 /**
  * Initialise tree scanner for walking tree in order from an end.