From dee54244a68c33df5bcb375c3138a42aa80acb50 Mon Sep 17 00:00:00 2001
From: Lukas Lueg <lukas.lueg@gmail.com>
Date: Sun, 14 Feb 2021 22:39:47 +0100
Subject: [PATCH] Add missing env!-decl variant

Resolves #82117
---
 library/core/src/macros/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/library/core/src/macros/mod.rs b/library/core/src/macros/mod.rs
index 7aaf5a5fd461..82272c451c3f 100644
--- a/library/core/src/macros/mod.rs
+++ b/library/core/src/macros/mod.rs
@@ -816,6 +816,7 @@ pub(crate) mod builtin {
     #[macro_export]
     macro_rules! env {
         ($name:expr $(,)?) => {{ /* compiler built-in */ }};
+        ($name:expr, $error_msg:expr) => {{ /* compiler built-in */ }};
     }
 
     /// Optionally inspects an environment variable at compile time.