From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 16 Mar 2022 14:30:14 +0000 (+0000)
Subject: DOES NOT COMPILE
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=ff56f60c844347c109255fa95248b55bc123d0e4;p=rust-experiments.git

DOES NOT COMPILE
---

diff --git a/src/main.rs b/src/main.rs
index 26c43dd..cc60311 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,10 +3,7 @@ struct Struct;
 impl Trait for Struct { }
 
 fn optmap(s: Option<&Struct>) -> Option<&dyn Trait> {
-    match s {
-        Some(s) => Some(s),
-        None => None,
-    }
+    s
 }
 
 fn main() {