From 88ccd0612872f7a75afc0661ed12b185c14c4306 Mon Sep 17 00:00:00 2001
From: kojix2 <2xijok@gmail.com>
Date: Sat, 24 May 2025 21:41:08 +0900
Subject: [PATCH] Fix GCC compilation issue on Fedora 43 Fixes #221

---
 ext/numo/narray/ndloop.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ext/numo/narray/ndloop.c b/ext/numo/narray/ndloop.c
index 7a3b74c4..214f328b 100644
--- a/ext/numo/narray/ndloop.c
+++ b/ext/numo/narray/ndloop.c
@@ -38,6 +38,8 @@ typedef struct NA_LOOP_XARGS {
     bool free_user_iter;   // alloc LARG(lp,j).iter=lp->xargs[j].iter
 } na_loop_xargs_t;
 
+struct NA_MD_LOOP;
+
 typedef struct NA_MD_LOOP {
     int  narg;
     int  nin;
@@ -56,7 +58,7 @@ typedef struct NA_MD_LOOP {
     VALUE  reduce;
     VALUE  loop_opt;
     ndfunc_t  *ndfunc;
-    void (*loop_func)();
+    void (*loop_func)(ndfunc_t*, struct NA_MD_LOOP*);
 } na_md_loop_t;
 
 #define LARG(lp,iarg) ((lp)->user.args[iarg])