Auto merge of #46362 - kennytm:rollup, r=kennytm

Rollup of 10 pull requests

- Successful merges: #45969, #46077, #46219, #46287, #46293, #46322, #46323, #46330, #46354, #46356
- Failed merges:

9 files changed, 19 insertions, 77 deletions

diff --git a/src/libcore/cell.rs b/src/libcore/cell.rs
index d02576ae546..d4cd3f6264e 100644
--- a/src/libcore/cell.rs
+++ b/src/libcore/cell.rs
@@ -329,7 +329,6 @@ impl<T> Cell<T> {
     /// let c = Cell::new(5);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_unstable(feature = "const_cell_new")]
     #[inline]
     pub const fn new(value: T) -> Cell<T> {
         Cell {
@@ -544,7 +543,6 @@ impl<T> RefCell<T> {
     /// let c = RefCell::new(5);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_unstable(feature = "const_refcell_new")]
     #[inline]
     pub const fn new(value: T) -> RefCell<T> {
         RefCell {
@@ -1215,7 +1213,6 @@ impl<T> UnsafeCell<T> {
     /// let uc = UnsafeCell::new(5);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_unstable(feature = "const_unsafe_cell_new")]
     #[inline]
     pub const fn new(value: T) -> UnsafeCell<T> {
         UnsafeCell { value: value }
diff --git a/src/libcore/fmt/num.rs b/src/libcore/fmt/num.rs
index c8218172583..ee989854a37 100644
--- a/src/libcore/fmt/num.rs
+++ b/src/libcore/fmt/num.rs
@@ -134,7 +134,7 @@ macro_rules! radix {
     }
 }
 
-radix! { Binary,    2, "0b", x @  0 ...  2 => b'0' + x }
+radix! { Binary,    2, "0b", x @  0 ...  1 => b'0' + x }
 radix! { Octal,     8, "0o", x @  0 ...  7 => b'0' + x }
 radix! { Decimal,  10, "",   x @  0 ...  9 => b'0' + x }
 radix! { LowerHex, 16, "0x", x @  0 ...  9 => b'0' + x,
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 631b9f98589..07b45ad6a50 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -85,47 +85,13 @@
 #![feature(prelude_import)]
 #![feature(repr_simd, platform_intrinsics)]
 #![feature(rustc_attrs)]
-#![feature(rustc_const_unstable)]
 #![feature(specialization)]
 #![feature(staged_api)]
 #![feature(unboxed_closures)]
 #![feature(untagged_unions)]
 #![feature(unwind_attributes)]
-#![feature(const_min_value)]
-#![feature(const_max_value)]
-#![feature(const_atomic_bool_new)]
-#![feature(const_atomic_isize_new)]
-#![feature(const_atomic_usize_new)]
-#![feature(const_atomic_i8_new)]
-#![feature(const_atomic_u8_new)]
-#![feature(const_atomic_i16_new)]
-#![feature(const_atomic_u16_new)]
-#![feature(const_atomic_i32_new)]
-#![feature(const_atomic_u32_new)]
-#![feature(const_atomic_i64_new)]
-#![feature(const_atomic_u64_new)]
-#![feature(const_unsafe_cell_new)]
-#![feature(const_cell_new)]
-#![feature(const_nonzero_new)]
 #![cfg_attr(not(stage0), feature(doc_spotlight))]
 
-#![cfg_attr(not(stage0), feature(const_min_value))]
-#![cfg_attr(not(stage0), feature(const_max_value))]
-#![cfg_attr(not(stage0), feature(const_atomic_bool_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_isize_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_usize_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_i8_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_u8_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_i16_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_u16_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_i32_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_u32_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_i64_new))]
-#![cfg_attr(not(stage0), feature(const_atomic_u64_new))]
-#![cfg_attr(not(stage0), feature(const_unsafe_cell_new))]
-#![cfg_attr(not(stage0), feature(const_cell_new))]
-#![cfg_attr(not(stage0), feature(const_nonzero_new))]
-
 #[prelude_import]
 #[allow(unused)]
 use prelude::v1::*;
diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
index d57fbdf55f8..5b1a9399c39 100644
--- a/src/libcore/mem.rs
+++ b/src/libcore/mem.rs
@@ -311,7 +311,6 @@ pub fn forget<T>(t: T) {
 /// [alignment]: ./fn.align_of.html
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature = "const_size_of")]
 pub const fn size_of<T>() -> usize {
     unsafe { intrinsics::size_of::<T>() }
 }
@@ -403,7 +402,6 @@ pub fn min_align_of_val<T: ?Sized>(val: &T) -> usize {
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature = "const_align_of")]
 pub const fn align_of<T>() -> usize {
     unsafe { intrinsics::min_align_of::<T>() }
 }
diff --git a/src/libcore/nonzero.rs b/src/libcore/nonzero.rs
index ec277b4ae99..2c966eb3b57 100644
--- a/src/libcore/nonzero.rs
+++ b/src/libcore/nonzero.rs
@@ -70,7 +70,6 @@ impl<T: Zeroable> NonZero<T> {
     #[unstable(feature = "nonzero",
                reason = "needs an RFC to flesh out the design",
                issue = "27730")]
-    #[rustc_const_unstable(feature = "const_nonzero_new")]
     #[inline]
     pub const unsafe fn new_unchecked(inner: T) -> Self {
         NonZero(inner)
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 19e91a65964..5b9dd4b1c69 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -110,7 +110,6 @@ macro_rules! int_impl {
         /// assert_eq!(i8::min_value(), -128);
         /// ```
         #[stable(feature = "rust1", since = "1.0.0")]
-        #[rustc_const_unstable(feature = "const_min_value")]
         #[inline]
         pub const fn min_value() -> Self {
             !0 ^ ((!0 as $UnsignedT) >> 1) as Self
@@ -124,7 +123,6 @@ macro_rules! int_impl {
         /// assert_eq!(i8::max_value(), 127);
         /// ```
         #[stable(feature = "rust1", since = "1.0.0")]
-        #[rustc_const_unstable(feature = "const_max_value")]
         #[inline]
         pub const fn max_value() -> Self {
             !Self::min_value()
@@ -1290,7 +1288,6 @@ macro_rules! uint_impl {
         /// assert_eq!(u8::min_value(), 0);
         /// ```
         #[stable(feature = "rust1", since = "1.0.0")]
-        #[rustc_const_unstable(feature = "const_min_value")]
         #[inline]
         pub const fn min_value() -> Self { 0 }
 
@@ -1302,7 +1299,6 @@ macro_rules! uint_impl {
         /// assert_eq!(u8::max_value(), 255);
         /// ```
         #[stable(feature = "rust1", since = "1.0.0")]
-        #[rustc_const_unstable(feature = "const_max_value")]
         #[inline]
         pub const fn max_value() -> Self { !0 }
 
@@ -2438,7 +2434,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_alphabetic());
     /// assert!(!esc.is_ascii_alphabetic());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_alphabetic(&self) -> bool {
         if *self >= 0x80 { return false; }
@@ -2476,7 +2472,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_uppercase());
     /// assert!(!esc.is_ascii_uppercase());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_uppercase(&self) -> bool {
         if *self >= 0x80 { return false }
@@ -2514,7 +2510,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_lowercase());
     /// assert!(!esc.is_ascii_lowercase());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_lowercase(&self) -> bool {
         if *self >= 0x80 { return false }
@@ -2555,7 +2551,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_alphanumeric());
     /// assert!(!esc.is_ascii_alphanumeric());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_alphanumeric(&self) -> bool {
         if *self >= 0x80 { return false }
@@ -2593,7 +2589,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_digit());
     /// assert!(!esc.is_ascii_digit());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_digit(&self) -> bool {
         if *self >= 0x80 { return false }
@@ -2634,7 +2630,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_hexdigit());
     /// assert!(!esc.is_ascii_hexdigit());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_hexdigit(&self) -> bool {
         if *self >= 0x80 { return false }
@@ -2676,7 +2672,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_punctuation());
     /// assert!(!esc.is_ascii_punctuation());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_punctuation(&self) -> bool {
         if *self >= 0x80 { return false }
@@ -2714,7 +2710,7 @@ impl u8 {
     /// assert!(!lf.is_ascii_graphic());
     /// assert!(!esc.is_ascii_graphic());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_graphic(&self) -> bool {
         if *self >= 0x80 { return false; }
@@ -2769,7 +2765,7 @@ impl u8 {
     /// assert!(lf.is_ascii_whitespace());
     /// assert!(!esc.is_ascii_whitespace());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_whitespace(&self) -> bool {
         if *self >= 0x80 { return false; }
@@ -2809,7 +2805,7 @@ impl u8 {
     /// assert!(lf.is_ascii_control());
     /// assert!(esc.is_ascii_control());
     /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
+    #[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
     #[inline]
     pub fn is_ascii_control(&self) -> bool {
         if *self >= 0x80 { return false; }
diff --git a/src/libcore/ptr.rs b/src/libcore/ptr.rs
index 19553d0c37b..5e70c8283f4 100644
--- a/src/libcore/ptr.rs
+++ b/src/libcore/ptr.rs
@@ -74,7 +74,6 @@ pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature = "const_ptr_null")]
 pub const fn null<T>() -> *const T { 0 as *const T }
 
 /// Creates a null mutable raw pointer.
@@ -89,7 +88,6 @@ pub const fn null<T>() -> *const T { 0 as *const T }
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature = "const_ptr_null_mut")]
 pub const fn null_mut<T>() -> *mut T { 0 as *mut T }
 
 /// Swaps the values at two mutable locations of the same type, without
@@ -2347,7 +2345,6 @@ impl<T: ?Sized> Unique<T> {
     ///
     /// `ptr` must be non-null.
     #[unstable(feature = "unique", issue = "27730")]
-    #[rustc_const_unstable(feature = "const_unique_new")]
     pub const unsafe fn new_unchecked(ptr: *mut T) -> Self {
         Unique { pointer: NonZero::new_unchecked(ptr), _marker: PhantomData }
     }
@@ -2482,7 +2479,6 @@ impl<T: ?Sized> Shared<T> {
     ///
     /// `ptr` must be non-null.
     #[unstable(feature = "shared", issue = "27730")]
-    #[rustc_const_unstable(feature = "const_shared_new")]
     pub const unsafe fn new_unchecked(ptr: *mut T) -> Self {
         Shared { pointer: NonZero::new_unchecked(ptr), _marker: PhantomData }
     }
diff --git a/src/libcore/sync/atomic.rs b/src/libcore/sync/atomic.rs
index 8a261b8f077..4c6ff4d1bb4 100644
--- a/src/libcore/sync/atomic.rs
+++ b/src/libcore/sync/atomic.rs
@@ -242,7 +242,6 @@ impl AtomicBool {
     /// ```
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_unstable(feature = "const_atomic_bool_new")]
     pub const fn new(v: bool) -> AtomicBool {
         AtomicBool { v: UnsafeCell::new(v as u8) }
     }
@@ -656,7 +655,6 @@ impl<T> AtomicPtr<T> {
     /// ```
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_unstable(feature = "const_atomic_ptr_new")]
     pub const fn new(p: *mut T) -> AtomicPtr<T> {
         AtomicPtr { p: UnsafeCell::new(p) }
     }
@@ -926,6 +924,13 @@ impl<T> AtomicPtr<T> {
     }
 }
 
+#[cfg(target_has_atomic = "8")]
+#[stable(feature = "atomic_bool_from", since = "1.24.0")]
+impl From<bool> for AtomicBool {
+    #[inline]
+    fn from(b: bool) -> Self { Self::new(b) }
+}
+
 #[cfg(target_has_atomic = "ptr")]
 #[stable(feature = "atomic_from", since = "1.23.0")]
 impl<T> From<*mut T> for AtomicPtr<T> {
@@ -935,7 +940,7 @@ impl<T> From<*mut T> for AtomicPtr<T> {
 
 #[cfg(target_has_atomic = "ptr")]
 macro_rules! atomic_int {
-    ($stable:meta, $const_unstable:meta,
+    ($stable:meta,
      $stable_cxchg:meta,
      $stable_debug:meta,
      $stable_access:meta,
@@ -1004,7 +1009,6 @@ macro_rules! atomic_int {
             /// ```
             #[inline]
             #[$stable]
-            #[$const_unstable]
             pub const fn new(v: $int_type) -> Self {
                 $atomic_type {v: UnsafeCell::new(v)}
             }
@@ -1368,7 +1372,6 @@ macro_rules! atomic_int {
 #[cfg(target_has_atomic = "8")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_i8_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1378,7 +1381,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "8")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_u8_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1388,7 +1390,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "16")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_i16_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1398,7 +1399,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "16")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_u16_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1408,7 +1408,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "32")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_i32_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1418,7 +1417,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "32")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_u32_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1428,7 +1426,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "64")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_i64_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1438,7 +1435,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "64")]
 atomic_int! {
     unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_unstable(feature = "const_atomic_u64_new"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
     unstable(feature = "integer_atomics", issue = "32976"),
@@ -1448,7 +1444,6 @@ atomic_int! {
 #[cfg(target_has_atomic = "ptr")]
 atomic_int!{
     stable(feature = "rust1", since = "1.0.0"),
-    rustc_const_unstable(feature = "const_atomic_isize_new"),
     stable(feature = "extended_compare_and_swap", since = "1.10.0"),
     stable(feature = "atomic_debug", since = "1.3.0"),
     stable(feature = "atomic_access", since = "1.15.0"),
@@ -1458,7 +1453,6 @@ atomic_int!{
 #[cfg(target_has_atomic = "ptr")]
 atomic_int!{
     stable(feature = "rust1", since = "1.0.0"),
-    rustc_const_unstable(feature = "const_atomic_usize_new"),
     stable(feature = "extended_compare_and_swap", since = "1.10.0"),
     stable(feature = "atomic_debug", since = "1.3.0"),
     stable(feature = "atomic_access", since = "1.15.0"),
diff --git a/src/libcore/tests/lib.rs b/src/libcore/tests/lib.rs
index e2283a71a0a..0e445cdac35 100644
--- a/src/libcore/tests/lib.rs
+++ b/src/libcore/tests/lib.rs
@@ -42,10 +42,6 @@
 #![feature(try_trait)]
 #![feature(unique)]
 
-#![feature(const_atomic_bool_new)]
-#![feature(const_atomic_usize_new)]
-#![feature(const_atomic_isize_new)]
-
 extern crate core;
 extern crate test;