From cc956565dc1a6f0753b79af9c1b52a7bb90a7954 Mon Sep 17 00:00:00 2001
From: ReversedGravity <rg@youxplode.com>
Date: Tue, 26 Mar 2024 20:09:26 +0000
Subject: [PATCH] Fix track macro - it broke on `impl` types previously.

---
 luisa_compute_track/src/lib.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/luisa_compute_track/src/lib.rs b/luisa_compute_track/src/lib.rs
index 271664a..c2894d9 100644
--- a/luisa_compute_track/src/lib.rs
+++ b/luisa_compute_track/src/lib.rs
@@ -426,10 +426,6 @@ pub fn tracked(
     let item = syn::parse_macro_input!(item as ItemFn);
     let body = &item.block;
     let body_span = body.span();
-    let ret_type = match &item.sig.output {
-        ReturnType::Default => quote_spanned! {body_span=> () },
-        ReturnType::Type(_, ty) => quote_spanned! {body_span=> #ty },
-    };
     let body = proc_macro::TokenStream::from(quote!({ #body }));
     let body = track_impl(parse_macro_input!(body as Expr), &crate_path);
     let body = quote_spanned! {body_span=>
@@ -444,7 +440,7 @@ pub fn tracked(
             };
             #crate_path::lang::debug::comment(&format!("begin fn {} at {}:{}:{}", __fn_name, file!(), line!(), column!()));
             #[allow(clippy::let_unit_value)]
-            let __ret: #ret_type = #body;
+            let __ret = #body;
             #[allow(unreachable_code)]
             {
                 #crate_path::lang::debug::comment(&format!("end fn {} at {}:{}:{}", __fn_name, file!(), line!(), column!()));