Rollup merge of #94220 - GuillaumeGomez:miniz-oxide-decl, r=Amanieu

matthiaskrgr · web-flow · commit ed3530925e8d · 2022-02-21T19:36:55.000+01:00
Correctly handle miniz_oxide extern crate declaration Fixes #94219. Follow-up of #94122. The `miniz_oxide` dependency is optional and therefore should allow be "imported" when it makes sense. r? `@ivmarkov`
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
@@ -366,6 +366,7 @@ extern crate unwind;
 
 #[doc(masked)]
 #[allow(unused_extern_crates)]
+#[cfg(feature = "miniz_oxide")]
 extern crate miniz_oxide;
 
 // During testing, this crate is not actually the "real" std library, but rather
