From 42247d8616b0f8fb62d8a5a6e8dd8f6a17e1b3eb Mon Sep 17 00:00:00 2001
From: Vinzent Steinberg <Vinzent.Steinberg@gmail.com>
Date: Fri, 28 Aug 2020 16:27:25 +0200
Subject: [PATCH] Restrict `rand::rngs::adapter` to `std`

See #911.
---
 src/rngs/adapter/mod.rs       | 5 +++--
 src/rngs/adapter/reseeding.rs | 4 ++--
 src/rngs/mod.rs               | 3 ++-
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/rngs/adapter/mod.rs b/src/rngs/adapter/mod.rs
index 45e56af7266..fb21a467b9e 100644
--- a/src/rngs/adapter/mod.rs
+++ b/src/rngs/adapter/mod.rs
@@ -8,8 +8,9 @@
 
 //! Wrappers / adapters forming RNGs
 
-#[cfg(feature = "std")] mod read;
+mod read;
 mod reseeding;
 
-#[cfg(feature = "std")] pub use self::read::{ReadError, ReadRng};
+pub use self::read::{ReadError, ReadRng};
+#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
 pub use self::reseeding::ReseedingRng;
diff --git a/src/rngs/adapter/reseeding.rs b/src/rngs/adapter/reseeding.rs
index c67196123f6..1977cb31906 100644
--- a/src/rngs/adapter/reseeding.rs
+++ b/src/rngs/adapter/reseeding.rs
@@ -279,7 +279,7 @@ where
 }
 
 
-#[cfg(all(unix, feature = "std", not(target_os = "emscripten")))]
+#[cfg(all(unix, not(target_os = "emscripten")))]
 mod fork {
     use core::sync::atomic::{AtomicUsize, Ordering};
     use std::sync::Once;
@@ -316,7 +316,7 @@ mod fork {
     }
 }
 
-#[cfg(not(all(unix, feature = "std", not(target_os = "emscripten"))))]
+#[cfg(not(all(unix, not(target_os = "emscripten"))))]
 mod fork {
     pub fn get_fork_counter() -> usize {
         0
diff --git a/src/rngs/mod.rs b/src/rngs/mod.rs
index 6d6e3d0cfd5..f866409579b 100644
--- a/src/rngs/mod.rs
+++ b/src/rngs/mod.rs
@@ -96,7 +96,8 @@
 //! [`rand_xoshiro`]: https://crates.io/crates/rand_xoshiro
 //! [`rng` tag]: https://crates.io/keywords/rng
 
-pub mod adapter;
+#[cfg_attr(doc_cfg, doc(cfg(feature = "std")))]
+#[cfg(feature = "std")] pub mod adapter;
 
 pub mod mock; // Public so we don't export `StepRng` directly, making it a bit
               // more clear it is intended for testing.