From cfe2e4660d7b6a37cab534935f67eda5dace49a9 Mon Sep 17 00:00:00 2001
From: Pavel Grigorenko <grigorenkopv@ya.ru>
Date: Wed, 14 Jun 2023 18:29:08 +0300
Subject: [PATCH] Mention `env!` in `option_env!`'s docs

---
 library/core/src/macros/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/library/core/src/macros/mod.rs b/library/core/src/macros/mod.rs
index c4134dbcd25..45e5b76272e 100644
--- a/library/core/src/macros/mod.rs
+++ b/library/core/src/macros/mod.rs
@@ -960,6 +960,8 @@ pub(crate) mod builtin {
     ///
     /// A compile time error is never emitted when using this macro regardless
     /// of whether the environment variable is present or not.
+    /// To emit a compile error if the environment variable is not present,
+    /// use the [`env!`] macro instead.
     ///
     /// # Examples
     ///