std: Remove the curious inner module

This isn't actually necessary any more with the advent of `$crate` and changes
in the compiler to expand macros to `::core::$foo` in the context of a
`#![no_std]` crate.

The libcore inner module was also trimmed down a bit to the bare bones.

5 files changed, 27 insertions, 44 deletions

diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 3d3a46e61d5..9f582c28cfd 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -421,27 +421,10 @@ pub mod __rand {
 // because rustdoc only looks for these modules at the crate level.
 include!("primitive_docs.rs");
 
-// A curious inner-module that's not exported that contains the binding
-// 'std' so that macro-expanded references to std::error and such
-// can be resolved within libstd.
-#[doc(hidden)]
+// The expansion of --test has a few references to `::std::$foo` so this module
+// is necessary to get things to compile.
+#[cfg(test)]
 mod std {
-    pub use sync; // used for select!()
-    pub use error; // used for try!()
-    pub use fmt; // used for any formatting strings
-    pub use option; // used for thread_local!{}
-    pub use rt; // used for panic!()
-    pub use vec; // used for vec![]
-    pub use cell; // used for tls!
-    pub use thread; // used for thread_local!
-    pub use marker;  // used for tls!
-
-    // The test runner calls ::std::env::args() but really wants realstd
-    #[cfg(test)] pub use realstd::env as env;
-    // The test runner requires std::slice::Vector, so re-export std::slice just for it.
-    //
-    // It is also used in vec![]
-    pub use slice;
-
-    pub use boxed; // used for vec![]
+    pub use option;
+    pub use realstd::env;
 }
diff --git a/src/libstd/process.rs b/src/libstd/process.rs
index 269a1638b0a..fefd7bb051f 100644
--- a/src/libstd/process.rs
+++ b/src/libstd/process.rs
@@ -799,7 +799,7 @@ mod tests {
     #[cfg(not(target_os="android"))]
     #[test]
     fn test_inherit_env() {
-        use std::env;
+        use env;
 
         let result = env_cmd().output().unwrap();
         let output = String::from_utf8(result.stdout).unwrap();
diff --git a/src/libstd/sync/mpsc/mod.rs b/src/libstd/sync/mpsc/mod.rs
index 1453c91fd4d..d80d858e7a9 100644
--- a/src/libstd/sync/mpsc/mod.rs
+++ b/src/libstd/sync/mpsc/mod.rs
@@ -1107,7 +1107,7 @@ impl error::Error for TryRecvError {
 mod tests {
     use prelude::v1::*;
 
-    use std::env;
+    use env;
     use super::*;
     use thread;
 
@@ -1655,7 +1655,7 @@ mod tests {
 mod sync_tests {
     use prelude::v1::*;
 
-    use std::env;
+    use env;
     use thread;
     use super::*;
 
diff --git a/src/libstd/thread/local.rs b/src/libstd/thread/local.rs
index 11b375dcce2..9a6d68acb9f 100644
--- a/src/libstd/thread/local.rs
+++ b/src/libstd/thread/local.rs
@@ -107,14 +107,14 @@ pub struct LocalKey<T> {
 #[cfg(not(no_elf_tls))]
 macro_rules! thread_local {
     (static $name:ident: $t:ty = $init:expr) => (
-        static $name: ::std::thread::LocalKey<$t> =
+        static $name: $crate::thread::LocalKey<$t> =
             __thread_local_inner!($t, $init,
                 #[cfg_attr(all(any(target_os = "macos", target_os = "linux"),
                                not(target_arch = "aarch64")),
                            thread_local)]);
     );
     (pub static $name:ident: $t:ty = $init:expr) => (
-        pub static $name: ::std::thread::LocalKey<$t> =
+        pub static $name: $crate::thread::LocalKey<$t> =
             __thread_local_inner!($t, $init,
                 #[cfg_attr(all(any(target_os = "macos", target_os = "linux"),
                                not(target_arch = "aarch64")),
@@ -128,11 +128,11 @@ macro_rules! thread_local {
 #[cfg(no_elf_tls)]
 macro_rules! thread_local {
     (static $name:ident: $t:ty = $init:expr) => (
-        static $name: ::std::thread::LocalKey<$t> =
+        static $name: $crate::thread::LocalKey<$t> =
             __thread_local_inner!($t, $init, #[]);
     );
     (pub static $name:ident: $t:ty = $init:expr) => (
-        pub static $name: ::std::thread::LocalKey<$t> =
+        pub static $name: $crate::thread::LocalKey<$t> =
             __thread_local_inner!($t, $init, #[]);
     );
 }
@@ -145,11 +145,11 @@ macro_rules! thread_local {
 macro_rules! __thread_local_inner {
     ($t:ty, $init:expr, #[$($attr:meta),*]) => {{
         $(#[$attr])*
-        static __KEY: ::std::thread::__LocalKeyInner<$t> =
-            ::std::thread::__LocalKeyInner::new();
+        static __KEY: $crate::thread::__LocalKeyInner<$t> =
+            $crate::thread::__LocalKeyInner::new();
         fn __init() -> $t { $init }
-        fn __getit() -> &'static ::std::thread::__LocalKeyInner<$t> { &__KEY }
-        ::std::thread::LocalKey::new(__getit, __init)
+        fn __getit() -> &'static $crate::thread::__LocalKeyInner<$t> { &__KEY }
+        $crate::thread::LocalKey::new(__getit, __init)
     }}
 }
 
diff --git a/src/libstd/thread/scoped_tls.rs b/src/libstd/thread/scoped_tls.rs
index 4fbfdec8e7e..cf2c5db8277 100644
--- a/src/libstd/thread/scoped_tls.rs
+++ b/src/libstd/thread/scoped_tls.rs
@@ -70,11 +70,11 @@ pub struct ScopedKey<T> { inner: fn() -> &'static imp::KeyInner<T> }
 #[allow_internal_unstable]
 macro_rules! scoped_thread_local {
     (static $name:ident: $t:ty) => (
-        static $name: ::std::thread::ScopedKey<$t> =
+        static $name: $crate::thread::ScopedKey<$t> =
             __scoped_thread_local_inner!($t);
     );
     (pub static $name:ident: $t:ty) => (
-        pub static $name: ::std::thread::ScopedKey<$t> =
+        pub static $name: $crate::thread::ScopedKey<$t> =
             __scoped_thread_local_inner!($t);
     );
 }
@@ -87,10 +87,10 @@ macro_rules! scoped_thread_local {
 #[cfg(no_elf_tls)]
 macro_rules! __scoped_thread_local_inner {
     ($t:ty) => {{
-        static _KEY: ::std::thread::__ScopedKeyInner<$t> =
-            ::std::thread::__ScopedKeyInner::new();
-        fn _getit() -> &'static ::std::thread::__ScopedKeyInner<$t> { &_KEY }
-        ::std::thread::ScopedKey::new(_getit)
+        static _KEY: $crate::thread::__ScopedKeyInner<$t> =
+            $crate::thread::__ScopedKeyInner::new();
+        fn _getit() -> &'static $crate::thread::__ScopedKeyInner<$t> { &_KEY }
+        $crate::thread::ScopedKey::new(_getit)
     }}
 }
 
@@ -109,10 +109,10 @@ macro_rules! __scoped_thread_local_inner {
                            target_os = "openbsd",
                            target_arch = "aarch64")),
                    thread_local)]
-        static _KEY: ::std::thread::__ScopedKeyInner<$t> =
-            ::std::thread::__ScopedKeyInner::new();
-        fn _getit() -> &'static ::std::thread::__ScopedKeyInner<$t> { &_KEY }
-        ::std::thread::ScopedKey::new(_getit)
+        static _KEY: $crate::thread::__ScopedKeyInner<$t> =
+            $crate::thread::__ScopedKeyInner::new();
+        fn _getit() -> &'static $crate::thread::__ScopedKeyInner<$t> { &_KEY }
+        $crate::thread::ScopedKey::new(_getit)
     }}
 }
 
@@ -225,7 +225,7 @@ impl<T> ScopedKey<T> {
               no_elf_tls)))]
 #[doc(hidden)]
 mod imp {
-    use std::cell::Cell;
+    use cell::Cell;
 
     pub struct KeyInner<T> { inner: Cell<*mut T> }