From 079093996c718017986d1ed3f69e4fef5797c07b Mon Sep 17 00:00:00 2001
From: Lewin Bormann <lewin@lewin-bormann.info>
Date: Sat, 23 Dec 2023 15:43:15 +0100
Subject: [PATCH] Suppress warning about unused mut in memoizer function

Workaround for issue #32
---
 examples/issue32.rs | 11 +++++++++++
 inner/src/lib.rs    |  2 +-
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 examples/issue32.rs

diff --git a/examples/issue32.rs b/examples/issue32.rs
new file mode 100644
index 0000000..ba34a47
--- /dev/null
+++ b/examples/issue32.rs
@@ -0,0 +1,11 @@
+use memoize::memoize;
+
+#[memoize]
+fn expensive(mut foo: i32) -> i32 {
+    foo += 1;
+    foo
+}
+
+fn main() {
+    expensive(7);
+}
diff --git a/inner/src/lib.rs b/inner/src/lib.rs
index c7d708b..1ce5efe 100644
--- a/inner/src/lib.rs
+++ b/inner/src/lib.rs
@@ -435,7 +435,7 @@ pub fn memoize(attr: TokenStream, item: TokenStream) -> TokenStream {
         #flusher
         #store
 
-        #[allow(unused_variables)]
+        #[allow(unused_variables, unused_mut)]
         #vis #sig {
             #memoizer
         }