From 7de4e06781c619741e43690dc8b05e12c2f0fbb4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ale=C5=A1=20Bizjak?= <ab@concordium.com>
Date: Fri, 5 May 2023 20:03:21 +0200
Subject: [PATCH] Explain redundant closure.

---
 concordium-std/src/impls.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/concordium-std/src/impls.rs b/concordium-std/src/impls.rs
index ba953bab..76799ffc 100644
--- a/concordium-std/src/impls.rs
+++ b/concordium-std/src/impls.rs
@@ -2658,6 +2658,8 @@ impl<A> UnwrapAbort for Option<A> {
 
     #[inline(always)]
     #[allow(clippy::redundant_closure)]
+    // The redundant_closure here is needed since there is an implicit coercion from
+    // ! to A. This does not happen if we just use unwrap_or_else(crate::trap).
     fn unwrap_abort(self) -> Self::Unwrap { self.unwrap_or_else(|| crate::trap()) }
 }