From 939cae8c4610f121f9a4b3194975de5a9e9a9d98 Mon Sep 17 00:00:00 2001
From: cyrgani <ansgar.w.zielke@gmail.com>
Date: Sun, 12 Jan 2025 21:27:54 +0100
Subject: [PATCH] add help message for `#[macroquad::main]` on a non-async
 function

---
 macroquad_macro/src/lib.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/macroquad_macro/src/lib.rs b/macroquad_macro/src/lib.rs
index 76b2249b..4b20f7f4 100644
--- a/macroquad_macro/src/lib.rs
+++ b/macroquad_macro/src/lib.rs
@@ -80,7 +80,11 @@ pub fn main(attr: TokenStream, item: TokenStream) -> TokenStream {
     };
 
     if let TokenTree::Ident(ident) = source.next().unwrap() {
-        assert_eq!(format!("{}", ident), "async");
+        assert_eq!(
+            format!("{}", ident),
+            "async",
+            "[macroquad::main] is allowed only for async functions"
+        );
 
         modified.extend(std::iter::once(TokenTree::Ident(ident)));
     } else {