stabilize ptr.is_aligned, move ptr.is_aligned_to to a new feature gate

This is an alternative to #121920
2024-11-22 06:44:35 +00:00 · 2024-03-03 14:44:15 -05:00 · 2024-03-03 14:44:15 -05:00 · ea92faec49
commit ea92faec49
parent faae5f1ffe
13 changed files with 30 additions and 51 deletions
--- a/compiler/rustc_codegen_gcc/patches/libgccjit12/0001-core-Disable-portable-simd-test.patch
+++ b/compiler/rustc_codegen_gcc/patches/libgccjit12/0001-core-Disable-portable-simd-test.patch
@ -14,7 +14,7 @@ index d0a119c..76fdece 100644
@@ -89,7 +89,6 @@
 #![feature(never_type)]
 #![feature(unwrap_infallible)]
- #![feature(pointer_is_aligned)]
+ #![feature(pointer_is_aligned_to)]
 -#![feature(portable_simd)]
 #![feature(ptr_metadata)]
 #![feature(lazy_cell)]
--- a/library/alloc/src/lib.rs
+++ b/library/alloc/src/lib.rs
@ -198,7 +198,6 @@
 #![feature(multiple_supertrait_upcastable)]
 #![feature(negative_impls)]
 #![feature(never_type)]
-#![feature(pointer_is_aligned)]
 #![feature(rustc_allow_const_fn_unstable)]
 #![feature(rustc_attrs)]
 #![feature(slice_internals)]
--- a/library/alloc/tests/lib.rs
+++ b/library/alloc/tests/lib.rs
@ -37,7 +37,7 @@
 #![feature(const_trait_impl)]
 #![feature(const_str_from_utf8)]
 #![feature(panic_update_hook)]
-#![feature(pointer_is_aligned)]
+#![feature(pointer_is_aligned_to)]
 #![feature(slice_flatten)]
 #![feature(thin_box)]
 #![feature(strict_provenance)]
--- a/library/core/src/ptr/const_ptr.rs
+++ b/library/core/src/ptr/const_ptr.rs
@ -1401,8 +1401,6 @@ impl<T: ?Sized> *const T {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
-    ///
    /// // On some platforms, the alignment of i32 is less than 4.
    /// #[repr(align(4))]
    /// struct AlignedI32(i32);
@ -1425,7 +1423,6 @@ impl<T: ?Sized> *const T {
    /// underlying allocation.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of primitives is less than their size.
@ -1451,7 +1448,6 @@ impl<T: ?Sized> *const T {
    /// pointer is aligned, even if the compiletime pointer wasn't aligned.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of primitives is less than their size.
@ -1477,7 +1473,6 @@ impl<T: ?Sized> *const T {
    /// runtime and compiletime.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of primitives is less than their size.
@ -1501,7 +1496,7 @@ impl<T: ?Sized> *const T {
    /// [tracking issue]: https://github.com/rust-lang/rust/issues/104203
    #[must_use]
    #[inline]
-    #[unstable(feature = "pointer_is_aligned", issue = "96284")]
+    #[stable(feature = "pointer_is_aligned", since = "CURRENT_RUSTC_VERSION")]
    #[rustc_const_unstable(feature = "const_pointer_is_aligned", issue = "104203")]
    pub const fn is_aligned(self) -> bool
    where
@ -1522,7 +1517,7 @@ impl<T: ?Sized> *const T {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
    /// #[repr(align(4))]
@ -1551,7 +1546,7 @@ impl<T: ?Sized> *const T {
    /// cannot be stricter aligned than the reference's underlying allocation.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
@ -1576,7 +1571,7 @@ impl<T: ?Sized> *const T {
    /// pointer is aligned, even if the compiletime pointer wasn't aligned.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
@ -1600,7 +1595,7 @@ impl<T: ?Sized> *const T {
    /// runtime and compiletime.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// const _: () = {
@ -1616,7 +1611,7 @@ impl<T: ?Sized> *const T {
    /// [tracking issue]: https://github.com/rust-lang/rust/issues/104203
    #[must_use]
    #[inline]
-    #[unstable(feature = "pointer_is_aligned", issue = "96284")]
+    #[unstable(feature = "pointer_is_aligned_to", issue = "96284")]
    #[rustc_const_unstable(feature = "const_pointer_is_aligned", issue = "104203")]
    pub const fn is_aligned_to(self, align: usize) -> bool {
        if !align.is_power_of_two() {
--- a/library/core/src/ptr/mut_ptr.rs
+++ b/library/core/src/ptr/mut_ptr.rs
@ -1660,8 +1660,6 @@ impl<T: ?Sized> *mut T {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
-    ///
    /// // On some platforms, the alignment of i32 is less than 4.
    /// #[repr(align(4))]
    /// struct AlignedI32(i32);
@ -1684,7 +1682,6 @@ impl<T: ?Sized> *mut T {
    /// underlying allocation.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    /// #![feature(const_mut_refs)]
    ///
@ -1711,7 +1708,6 @@ impl<T: ?Sized> *mut T {
    /// pointer is aligned, even if the compiletime pointer wasn't aligned.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of primitives is less than their size.
@ -1738,7 +1734,6 @@ impl<T: ?Sized> *mut T {
    /// runtime and compiletime.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of primitives is less than their size.
@ -1762,7 +1757,7 @@ impl<T: ?Sized> *mut T {
    /// [tracking issue]: https://github.com/rust-lang/rust/issues/104203
    #[must_use]
    #[inline]
-    #[unstable(feature = "pointer_is_aligned", issue = "96284")]
+    #[stable(feature = "pointer_is_aligned", since = "CURRENT_RUSTC_VERSION")]
    #[rustc_const_unstable(feature = "const_pointer_is_aligned", issue = "104203")]
    pub const fn is_aligned(self) -> bool
    where
@ -1783,7 +1778,7 @@ impl<T: ?Sized> *mut T {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
    /// #[repr(align(4))]
@ -1812,7 +1807,7 @@ impl<T: ?Sized> *mut T {
    /// cannot be stricter aligned than the reference's underlying allocation.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    /// #![feature(const_mut_refs)]
    ///
@ -1838,7 +1833,7 @@ impl<T: ?Sized> *mut T {
    /// pointer is aligned, even if the compiletime pointer wasn't aligned.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
@ -1863,7 +1858,7 @@ impl<T: ?Sized> *mut T {
    /// runtime and compiletime.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// const _: () = {
@ -1879,7 +1874,7 @@ impl<T: ?Sized> *mut T {
    /// [tracking issue]: https://github.com/rust-lang/rust/issues/104203
    #[must_use]
    #[inline]
-    #[unstable(feature = "pointer_is_aligned", issue = "96284")]
+    #[unstable(feature = "pointer_is_aligned_to", issue = "96284")]
    #[rustc_const_unstable(feature = "const_pointer_is_aligned", issue = "104203")]
    pub const fn is_aligned_to(self, align: usize) -> bool {
        if !align.is_power_of_two() {
--- a/library/core/src/ptr/non_null.rs
+++ b/library/core/src/ptr/non_null.rs
@ -1288,7 +1288,6 @@ impl<T: ?Sized> NonNull<T> {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// use std::ptr::NonNull;
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
@ -1313,7 +1312,6 @@ impl<T: ?Sized> NonNull<T> {
    /// underlying allocation.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    /// #![feature(non_null_convenience)]
    /// #![feature(const_option)]
@ -1343,7 +1341,6 @@ impl<T: ?Sized> NonNull<T> {
    /// pointer is aligned, even if the compiletime pointer wasn't aligned.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of primitives is less than their size.
@ -1369,7 +1366,6 @@ impl<T: ?Sized> NonNull<T> {
    /// runtime and compiletime.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// #![feature(const_pointer_is_aligned)]
    /// #![feature(const_option)]
    /// #![feature(const_nonnull_new)]
@ -1394,7 +1390,7 @@ impl<T: ?Sized> NonNull<T> {
    /// ```
    ///
    /// [tracking issue]: https://github.com/rust-lang/rust/issues/104203
-    #[unstable(feature = "pointer_is_aligned", issue = "96284")]
+    #[stable(feature = "pointer_is_aligned", since = "CURRENT_RUSTC_VERSION")]
    #[rustc_const_unstable(feature = "const_pointer_is_aligned", issue = "104203")]
    #[must_use]
    #[inline]
@ -1417,7 +1413,7 @@ impl<T: ?Sized> NonNull<T> {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
    /// #[repr(align(4))]
@ -1446,7 +1442,7 @@ impl<T: ?Sized> NonNull<T> {
    /// cannot be stricter aligned than the reference's underlying allocation.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
@ -1471,7 +1467,7 @@ impl<T: ?Sized> NonNull<T> {
    /// pointer is aligned, even if the compiletime pointer wasn't aligned.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// // On some platforms, the alignment of i32 is less than 4.
@ -1495,7 +1491,7 @@ impl<T: ?Sized> NonNull<T> {
    /// runtime and compiletime.
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
+    /// #![feature(pointer_is_aligned_to)]
    /// #![feature(const_pointer_is_aligned)]
    ///
    /// const _: () = {
@ -1509,7 +1505,7 @@ impl<T: ?Sized> NonNull<T> {
    /// ```
    ///
    /// [tracking issue]: https://github.com/rust-lang/rust/issues/104203
-    #[unstable(feature = "pointer_is_aligned", issue = "96284")]
+    #[unstable(feature = "pointer_is_aligned_to", issue = "96284")]
    #[rustc_const_unstable(feature = "const_pointer_is_aligned", issue = "104203")]
    #[must_use]
    #[inline]
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@ -418,14 +418,12 @@ impl AtomicBool {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// use std::sync::atomic::{self, AtomicBool};
-    /// use std::mem::align_of;
    ///
    /// // Get a pointer to an allocated value
    /// let ptr: *mut bool = Box::into_raw(Box::new(false));
    ///
-    /// assert!(ptr.is_aligned_to(align_of::<AtomicBool>()));
+    /// assert!(ptr.cast::<AtomicBool>().is_aligned());
    ///
    /// {
    ///     // Create an atomic view of the allocated value
@ -1216,14 +1214,12 @@ impl<T> AtomicPtr<T> {
    /// # Examples
    ///
    /// ```
-    /// #![feature(pointer_is_aligned)]
    /// use std::sync::atomic::{self, AtomicPtr};
-    /// use std::mem::align_of;
    ///
    /// // Get a pointer to an allocated value
    /// let ptr: *mut *mut u8 = Box::into_raw(Box::new(std::ptr::null_mut()));
    ///
-    /// assert!(ptr.is_aligned_to(align_of::<AtomicPtr<u8>>()));
+    /// assert!(ptr.cast::<AtomicPtr<u8>>().is_aligned());
    ///
    /// {
    ///     // Create an atomic view of the allocated value
@ -2199,14 +2195,12 @@ macro_rules! atomic_int {
            /// # Examples
            ///
            /// ```
-            /// #![feature(pointer_is_aligned)]
            #[doc = concat!($extra_feature, "use std::sync::atomic::{self, ", stringify!($atomic_type), "};")]
-            /// use std::mem::align_of;
            ///
            /// // Get a pointer to an allocated value
            #[doc = concat!("let ptr: *mut ", stringify!($int_type), " = Box::into_raw(Box::new(0));")]
            ///
-            #[doc = concat!("assert!(ptr.is_aligned_to(align_of::<", stringify!($atomic_type), ">()));")]
+            #[doc = concat!("assert!(ptr.cast::<", stringify!($atomic_type), ">().is_aligned());")]
            ///
            /// {
            ///     // Create an atomic view of the allocated value
--- a/library/core/tests/lib.rs
+++ b/library/core/tests/lib.rs
@ -95,7 +95,7 @@
 #![feature(const_waker)]
 #![feature(never_type)]
 #![feature(unwrap_infallible)]
-#![feature(pointer_is_aligned)]
+#![feature(pointer_is_aligned_to)]
 #![feature(portable_simd)]
 #![feature(ptr_metadata)]
 #![feature(lazy_cell)]
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@ -341,7 +341,7 @@
 #![feature(panic_can_unwind)]
 #![feature(panic_info_message)]
 #![feature(panic_internals)]
-#![feature(pointer_is_aligned)]
+#![feature(pointer_is_aligned_to)]
 #![feature(portable_simd)]
 #![feature(prelude_2024)]
 #![feature(ptr_as_uninit)]
--- a/src/tools/miri/tests/pass-dep/shims/posix_memalign.rs
+++ b/src/tools/miri/tests/pass-dep/shims/posix_memalign.rs
@ -1,6 +1,6 @@
 //@ignore-target-windows: No libc on Windows

-#![feature(pointer_is_aligned)]
+#![feature(pointer_is_aligned_to)]
 #![feature(strict_provenance)]

 use core::ptr;
--- a/tests/assembly/is_aligned.rs
+++ b/tests/assembly/is_aligned.rs
@ -7,7 +7,7 @@
 #![crate_type="rlib"]

 #![feature(core_intrinsics)]
-#![feature(pointer_is_aligned)]
+#![feature(pointer_is_aligned_to)]

 // CHECK-LABEL: is_aligned_to_unchecked
 // CHECK: decq
--- a/tests/ui/mir/alignment/packed.rs
+++ b/tests/ui/mir/alignment/packed.rs
@ -1,7 +1,7 @@
 //@ run-pass
 //@ compile-flags: -C debug-assertions

-#![feature(strict_provenance, pointer_is_aligned)]
+#![feature(strict_provenance)]

 #[repr(packed)]
 struct Misaligner {
--- a/tests/ui/structs-enums/type-sizes.rs
+++ b/tests/ui/structs-enums/type-sizes.rs
@ -4,7 +4,7 @@
 #![allow(dead_code)]
 #![feature(generic_nonzero)]
 #![feature(never_type)]
-#![feature(pointer_is_aligned)]
+#![feature(pointer_is_aligned_to)]
 #![feature(strict_provenance)]

 use std::mem::size_of;