From 71b7c7713a0056be7a2fa24658a67e5553349086 Mon Sep 17 00:00:00 2001
From: Xiangyan Sun <wishstudio@gmail.com>
Date: Wed, 1 Apr 2026 09:37:00 -0700
Subject: [PATCH] gbdfed: fix build with gcc15

---
 pkgs/by-name/gb/gbdfed/package.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/by-name/gb/gbdfed/package.nix b/pkgs/by-name/gb/gbdfed/package.nix
index 7f3a0c30622c..ef988794e367 100644
--- a/pkgs/by-name/gb/gbdfed/package.nix
+++ b/pkgs/by-name/gb/gbdfed/package.nix
@@ -26,6 +26,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   hardeningDisable = [ "format" ];
 
+  postPatch = ''
+    # gcc15
+    substituteInPlace bdfgrab.c --replace-fail 'int (*old_error_handler)();' 'XErrorHandler old_error_handler;'
+    substituteInPlace hbf.c --replace-fail 'typedef	int	bool;' '// typedef	int	bool;'
+  '';
+
   meta = {
     description = "Bitmap Font Editor";
     longDescription = ''