From 17ca5018ebb28d5d392d61aee62170fb3e4f2a5b Mon Sep 17 00:00:00 2001
From: "Tobin C. Harding" <me@tobin.cc>
Date: Fri, 22 Nov 2024 10:42:17 +1100
Subject: [PATCH] units: Comment alloc feature

Add a comment to the `serde` module about why we have all the `alloc`
feature gating.

Done as part of #3556 - auditing the whole crate for use of `alloc`
feature.
---
 units/src/amount/serde.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/units/src/amount/serde.rs b/units/src/amount/serde.rs
index 038b530ef..a485994b7 100644
--- a/units/src/amount/serde.rs
+++ b/units/src/amount/serde.rs
@@ -24,7 +24,7 @@ use core::fmt;
 
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 
-#[cfg(feature = "alloc")]
+#[cfg(feature = "alloc")] // This is because `to_float_in` uses `to_string`.
 use super::Denomination;
 use super::{Amount, ParseAmountError, SignedAmount};