From dfd81323d5f362aeb553b14e5345e9d63c2948a9 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Thu, 10 May 2018 08:44:26 -0700
Subject: [PATCH] Cfg away a macro used only by flatten

---
 serde/src/private/de.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/serde/src/private/de.rs b/serde/src/private/de.rs
index dce863fd..dcf5008f 100644
--- a/serde/src/private/de.rs
+++ b/serde/src/private/de.rs
@@ -2653,6 +2653,7 @@ where
     }
 }
 
+#[cfg(any(feature = "std", feature = "alloc"))]
 macro_rules! forward_to_deserialize_other {
     ($($func:ident ( $($arg:ty),* ))*) => {
         $(