From bf3501aecfda73acca7d338316f4eb2f0adee41e Mon Sep 17 00:00:00 2001
From: zach <zachshipko@gmail.com>
Date: Fri, 22 Mar 2024 07:38:45 -0700
Subject: [PATCH] use immutable runtime handle

---
 derive/src/lib.rs | 4 ++--
 src/lib.rs        | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/derive/src/lib.rs b/derive/src/lib.rs
index 4d9be6c..59aeacb 100644
--- a/derive/src/lib.rs
+++ b/derive/src/lib.rs
@@ -219,7 +219,7 @@ pub fn ocaml_func(attribute: TokenStream, item: TokenStream) -> TokenStream {
     let inner = if returns {
         quote! {
             #[inline(always)]
-            #constness #unsafety fn inner(#gc_name: &mut ocaml::Runtime, #(#rust_args),*) -> #rust_return_type {
+            #constness #unsafety fn inner(#gc_name: &ocaml::Runtime, #(#rust_args),*) -> #rust_return_type {
                 #use_gc
                 #body
             }
@@ -227,7 +227,7 @@ pub fn ocaml_func(attribute: TokenStream, item: TokenStream) -> TokenStream {
     } else {
         quote! {
             #[inline(always)]
-            #constness #unsafety fn inner(#gc_name: &mut ocaml::Runtime, #(#rust_args),*)  {
+            #constness #unsafety fn inner(#gc_name: &ocaml::Runtime, #(#rust_args),*)  {
                 #use_gc
                 #body
             }
diff --git a/src/lib.rs b/src/lib.rs
index e7904de..7317948 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -223,8 +223,8 @@ impl Runtime {
 
     #[doc(hidden)]
     #[inline(always)]
-    pub unsafe fn recover_handle() -> &'static mut Self {
-        static mut RUNTIME: Runtime = Runtime { _private: () };
-        &mut RUNTIME
+    pub unsafe fn recover_handle() -> &'static Self {
+        static RUNTIME: Runtime = Runtime { _private: () };
+        &RUNTIME
     }
 }