https://github.com/fluxbox/fluxbox/pull/78
From: Brahmajit Das <brahmajit.xyz@gmail.com>
Date: Tue, 16 May 2023 16:46:09 +0530
Subject: [PATCH] util/fbsetroot: Don't use register keyword

Register keyword has been deprecated since c++14 and completely removed
since c++17.

Encountered while building fluxbox with clang-16.

Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
--- a/util/fbsetroot.cc
+++ b/util/fbsetroot.cc
@@ -224,7 +224,7 @@ void fbsetroot::modula(int x, int y) {
     char data[32];
     long pattern = 0;
 
-    register int i;
+    int i;
 
     FbRootWindow root(screen);
 
-- 
2.40.1