Auto merge of rust-lang#132005 - matthiaskrgr:rollup-ced4upi, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#130350 (stabilize Strict Provenance and Exposed Provenance APIs)
 - rust-lang#131737 (linkchecker: add a reminder on broken links to add new/renamed pages to `SUMMARY.md` for mdBooks)
 - rust-lang#131991 (test: Add test for trait in FQS cast, issue rust-lang#98565)
 - rust-lang#131997 (Make `rustc_abi` compile on stable again)
 - rust-lang#131999 (Improve test coverage for `unit_bindings` lint)
 - rust-lang#132001 (fix coherence error for very large tuples™)
 - rust-lang#132003 (update ABI compatibility docs for new option-like rules)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_abi/src/callconv.rs

@@ -3,18 +3,23 @@ mod abi {
     pub(crate) use crate::Variants;
 }
 
+#[cfg(feature = "nightly")]
 use rustc_macros::HashStable_Generic;
 
-use crate::{Abi, Align, FieldsShape, HasDataLayout, Size, TyAbiInterface, TyAndLayout};
+#[cfg(feature = "nightly")]
+use crate::{Abi, FieldsShape, TyAbiInterface, TyAndLayout};
+use crate::{Align, HasDataLayout, Size};
 
-#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, HashStable_Generic)]
+#[cfg_attr(feature = "nightly", derive(HashStable_Generic))]
+#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
 pub enum RegKind {
     Integer,
     Float,
     Vector,
 }
 
-#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, HashStable_Generic)]
+#[cfg_attr(feature = "nightly", derive(HashStable_Generic))]
+#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
 pub struct Reg {
     pub kind: RegKind,
     pub size: Size,
@@ -108,15 +113,8 @@ impl HomogeneousAggregate {
     }
 }
 
+#[cfg(feature = "nightly")]
 impl<'a, Ty> TyAndLayout<'a, Ty> {
-    /// Returns `true` if this is an aggregate type (including a ScalarPair!)
-    pub fn is_aggregate(&self) -> bool {
-        match self.abi {
-            Abi::Uninhabited | Abi::Scalar(_) | Abi::Vector { .. } => false,
-            Abi::ScalarPair(..) | Abi::Aggregate { .. } => true,
-        }
-    }
-
     /// Returns `Homogeneous` if this layout is an aggregate containing fields of
     /// only a single type (e.g., `(u32, u32)`). Such aggregates are often
     /// special-cased in ABIs.

compiler/rustc_abi/src/layout.rs

@@ -11,8 +11,10 @@ use crate::{
     Variants, WrappingRange,
 };
 
+#[cfg(feature = "nightly")]
 mod ty;
 
+#[cfg(feature = "nightly")]
 pub use ty::{FIRST_VARIANT, FieldIdx, Layout, TyAbiInterface, TyAndLayout, VariantIdx};
 
 // A variant is absent if it's uninhabited and only has ZST fields.

compiler/rustc_abi/src/lib.rs

@@ -29,14 +29,14 @@ mod layout;
 mod tests;
 
 pub use callconv::{Heterogeneous, HomogeneousAggregate, Reg, RegKind};
-pub use layout::{
-    FIRST_VARIANT, FieldIdx, Layout, LayoutCalculator, LayoutCalculatorError, TyAbiInterface,
-    TyAndLayout, VariantIdx,
-};
+#[cfg(feature = "nightly")]
+pub use layout::{FIRST_VARIANT, FieldIdx, Layout, TyAbiInterface, TyAndLayout, VariantIdx};
+pub use layout::{LayoutCalculator, LayoutCalculatorError};
 
 /// Requirements for a `StableHashingContext` to be used in this crate.
 /// This is a hack to allow using the `HashStable_Generic` derive macro
 /// instead of implementing everything in `rustc_middle`.
+#[cfg(feature = "nightly")]
 pub trait HashStableContext {}
 
 #[derive(Clone, Copy, PartialEq, Eq, Default)]
@@ -1644,6 +1644,14 @@ pub struct LayoutS<FieldIdx: Idx, VariantIdx: Idx> {
 }
 
 impl<FieldIdx: Idx, VariantIdx: Idx> LayoutS<FieldIdx, VariantIdx> {
+    /// Returns `true` if this is an aggregate type (including a ScalarPair!)
+    pub fn is_aggregate(&self) -> bool {
+        match self.abi {
+            Abi::Uninhabited | Abi::Scalar(_) | Abi::Vector { .. } => false,
+            Abi::ScalarPair(..) | Abi::Aggregate { .. } => true,
+        }
+    }
+
     pub fn scalar<C: HasDataLayout>(cx: &C, scalar: Scalar) -> Self {
         let largest_niche = Niche::from_scalar(cx, Size::ZERO, scalar);
         let size = scalar.size(cx);

compiler/rustc_arena/src/lib.rs

@@ -23,7 +23,6 @@
 #![feature(maybe_uninit_slice)]
 #![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]
-#![feature(strict_provenance)]
 #![warn(unreachable_pub)]
 // tidy-alphabetical-end
 

compiler/rustc_codegen_ssa/src/lib.rs

@@ -11,7 +11,6 @@
 #![feature(let_chains)]
 #![feature(negative_impls)]
 #![feature(rustdoc_internals)]
-#![feature(strict_provenance)]
 #![feature(trait_alias)]
 #![feature(try_blocks)]
 #![warn(unreachable_pub)]

compiler/rustc_codegen_ssa/src/mir/rvalue.rs

@@ -361,12 +361,16 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
             (Int(..) | Float(_), Int(..) | Float(_)) => bx.bitcast(imm, to_backend_ty),
             (Pointer(..), Pointer(..)) => bx.pointercast(imm, to_backend_ty),
             (Int(..), Pointer(..)) => bx.ptradd(bx.const_null(bx.type_ptr()), imm),
-            (Pointer(..), Int(..)) => bx.ptrtoint(imm, to_backend_ty),
+            (Pointer(..), Int(..)) => {
+                // FIXME: this exposes the provenance, which shouldn't be necessary.
+                bx.ptrtoint(imm, to_backend_ty)
+            }
             (Float(_), Pointer(..)) => {
                 let int_imm = bx.bitcast(imm, bx.cx().type_isize());
                 bx.ptradd(bx.const_null(bx.type_ptr()), int_imm)
             }
             (Pointer(..), Float(_)) => {
+                // FIXME: this exposes the provenance, which shouldn't be necessary.
                 let int_imm = bx.ptrtoint(imm, bx.cx().type_isize());
                 bx.bitcast(int_imm, to_backend_ty)
             }

compiler/rustc_const_eval/src/lib.rs

@@ -10,7 +10,6 @@
 #![feature(never_type)]
 #![feature(rustdoc_internals)]
 #![feature(slice_ptr_get)]
-#![feature(strict_provenance)]
 #![feature(trait_alias)]
 #![feature(try_blocks)]
 #![feature(unqualified_local_imports)]

compiler/rustc_data_structures/src/lib.rs

@@ -33,7 +33,6 @@
 #![feature(ptr_alignment_type)]
 #![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]
-#![feature(strict_provenance)]
 #![feature(test)]
 #![feature(thread_id_value)]
 #![feature(type_alias_impl_trait)]

compiler/rustc_feature/src/unstable.rs

@@ -595,7 +595,7 @@ declare_features! (
     /// Allows attributes on expressions and non-item statements.
     (unstable, stmt_expr_attributes, "1.6.0", Some(15701)),
     /// Allows lints part of the strict provenance effort.
-    (unstable, strict_provenance, "1.61.0", Some(95228)),
+    (unstable, strict_provenance_lints, "1.61.0", Some(130351)),
     /// Allows string patterns to dereference values to match them.
     (unstable, string_deref_patterns, "1.67.0", Some(87121)),
     /// Allows the use of `#[target_feature]` on safe functions.

compiler/rustc_lint_defs/src/builtin.rs

@@ -2667,7 +2667,6 @@ declare_lint! {
     /// ### Example
     ///
     /// ```rust
-    /// #![feature(strict_provenance)]
     /// #![warn(fuzzy_provenance_casts)]
     ///
     /// fn main() {
@@ -2701,7 +2700,7 @@ declare_lint! {
     pub FUZZY_PROVENANCE_CASTS,
     Allow,
     "a fuzzy integer to pointer cast is used",
-    @feature_gate = strict_provenance;
+    @feature_gate = strict_provenance_lints;
 }
 
 declare_lint! {
@@ -2711,7 +2710,6 @@ declare_lint! {
     /// ### Example
     ///
     /// ```rust
-    /// #![feature(strict_provenance)]
     /// #![warn(lossy_provenance_casts)]
     ///
     /// fn main() {
@@ -2747,7 +2745,7 @@ declare_lint! {
     pub LOSSY_PROVENANCE_CASTS,
     Allow,
     "a lossy pointer to integer cast is used",
-    @feature_gate = strict_provenance;
+    @feature_gate = strict_provenance_lints;
 }
 
 declare_lint! {