Add missing env!-decl variant

lukaslueg · lukaslueg · commit dee54244a68c · 2021-02-14T22:39:47.000+01:00
Resolves rust-lang#82117
diff --git 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.

Original file line number	Diff line number	Diff line change
`@@ -816,6 +816,7 @@ pub(crate) mod builtin {`
`816`	`816`	`#[macro_export]`
`817`	`817`	`macro_rules! env {`
`818`	`818`	`($name:expr $(,)?) => {{ /* compiler built-in */ }};`
	`819`	`+ ($name:expr, $error_msg:expr) => {{ /* compiler built-in */ }};`
`819`	`820`	`}`
`820`	`821`
`821`	`822`	`/// Optionally inspects an environment variable at compile time.`