diff options
| -rw-r--r-- | library/core/src/macros/mod.rs | 2 |
1 files changed, 2 insertions, 0 deletions
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 /// |