https://sources.debian.org/patches/icoutils/0.32.3-6/c23-iterators.patch/

From 697da54703b28eb6476f5a8ea922620c5d9968ee Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@debian.org>
Date: Tue, 18 Feb 2025 10:01:05 +0000
Subject: Specify arguments in function declarations for iterators

GCC 15 rejected the previous code, since it is no longer valid in C23.

Forwarded: https://savannah.nongnu.org/bugs/index.php?66812
Bug: https://savannah.nongnu.org/bugs/index.php?66812
Bug-Debian: https://bugs.debian.org/1096829
Last-Update: 2025-02-18

Patch-Name: c23-iterators.patch
--- a/common/hmap.c
+++ b/common/hmap.c
@@ -363,7 +363,7 @@ hmap_iterator(HMap *map, HMapIterator *it)
  * function. But no other entry.
  */
 void
-hmap_foreach_value(HMap *map, void (*iterator)())
+hmap_foreach_value(HMap *map, void (*iterator)(void *))
 {
     uint32_t c;
 
@@ -378,7 +378,7 @@ hmap_foreach_value(HMap *map, void (*iterator)())
 }
 
 void
-hmap_foreach_key(HMap *map, void (*iterator)())
+hmap_foreach_key(HMap *map, void (*iterator)(void *))
 {
     uint32_t c;
 
--- a/common/hmap.h
+++ b/common/hmap.h
@@ -50,8 +50,8 @@ void *hmap_put(HMap *map, void *key, void *value);
 bool hmap_contains_key(HMap *map, const void *key);
 void *hmap_remove(HMap *map, const void *key);
 void hmap_iterator(HMap *map, HMapIterator *it);
-void hmap_foreach_key(HMap *map, void (*iterator)());
-void hmap_foreach_value(HMap *map, void (*iterator)());
+void hmap_foreach_key(HMap *map, void (*iterator)(void *));
+void hmap_foreach_value(HMap *map, void (*iterator)(void *));
 void hmap_clear(HMap *map);
 size_t hmap_size(HMap *map);
 void hmap_set_hash_fn(HMap *map, hash_fn_t hash);
--- a/common/llist.c
+++ b/common/llist.c
@@ -445,7 +445,7 @@ llist_is_empty(LList *list)
 }
 
 void
-llist_iterate(LList *list, void (*iterator_func)())
+llist_iterate(LList *list, void (*iterator_func)(void *))
 {
 	LNode *entry;
 	for (entry = list->first; entry != NULL; entry = entry->next)
--- a/common/llist.h
+++ b/common/llist.h
@@ -68,7 +68,7 @@ LList *llist_clone(LList *list);
 void **llist_to_array(LList *list);
 void **llist_to_null_terminated_array(LList *list);
 
-void llist_iterate(LList *list, void (*iterator_func)());
+void llist_iterate(LList *list, void (*iterator_func)(void *));
 void llist_iterator(LList *list, LListIterator *it);
 
 void llist_reverse(LList *list);
--- a/common/tmap.c
+++ b/common/tmap.c
@@ -512,7 +512,7 @@ predecessor(TMapNode *node)
 #endif
 
 static void
-tmap_foreach_nodes_key(TMapNode *node, void (*iterator)())
+tmap_foreach_nodes_key(TMapNode *node, void (*iterator)(void *))
 {
     if (node->left != &nil)
     	tmap_foreach_nodes_key(node->left, iterator);
@@ -522,7 +522,7 @@ tmap_foreach_nodes_key(TMapNode *node, void (*iterator)())
 }
 
 static void
-tmap_foreach_nodes_value(TMapNode *node, void (*iterator)())
+tmap_foreach_nodes_value(TMapNode *node, void (*iterator)(void *))
 {
     if (node->left != &nil)
     	tmap_foreach_nodes_value(node->left, iterator);
@@ -532,14 +532,14 @@ tmap_foreach_nodes_value(TMapNode *node, void (*iterator)())
 }
 
 void
-tmap_foreach_key(TMap *map, void (*iterator)())
+tmap_foreach_key(TMap *map, void (*iterator)(void *))
 {
     if (map->root != &nil)
 	tmap_foreach_nodes_key(map->root, iterator);
 }
 
 void
-tmap_foreach_value(TMap *map, void (*iterator)())
+tmap_foreach_value(TMap *map, void (*iterator)(void *))
 {
     if (map->root != &nil)
 	tmap_foreach_nodes_value(map->root, iterator);
--- a/common/tmap.h
+++ b/common/tmap.h
@@ -51,8 +51,8 @@ void *tmap_remove(TMap *map, const void *key);
 void tmap_iterator(TMap *map, TMapIterator *it); /* value iterator */
 bool tmap_iterator_partial(TMap *map, TMapIterator *it, const void *match, comparison_fn_t comparator);
 void tmap_clear(TMap *map);
-void tmap_foreach_key(TMap *map, void (*iterator)());
-void tmap_foreach_value(TMap *map, void (*iterator)());
+void tmap_foreach_key(TMap *map, void (*iterator)(void *));
+void tmap_foreach_value(TMap *map, void (*iterator)(void *));
 
 #ifdef ENABLE_TMAP_TESTING
 #include <stdio.h>