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move strict provenance lints to new feature gate, remove old feature …
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RalfJung committed Sep 14, 2024
1 parent 18c72d0 commit 01e8884
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Showing 89 changed files with 41 additions and 126 deletions.
1 change: 0 additions & 1 deletion compiler/rustc_arena/src/lib.rs
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Expand Up @@ -23,7 +23,6 @@
#![feature(maybe_uninit_slice)]
#![feature(rustc_attrs)]
#![feature(rustdoc_internals)]
#![feature(strict_provenance)]
#![warn(unreachable_pub)]
// tidy-alphabetical-end

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1 change: 0 additions & 1 deletion compiler/rustc_codegen_ssa/src/lib.rs
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Expand Up @@ -10,7 +10,6 @@
#![feature(let_chains)]
#![feature(negative_impls)]
#![feature(rustdoc_internals)]
#![feature(strict_provenance)]
#![feature(try_blocks)]
#![warn(unreachable_pub)]
// tidy-alphabetical-end
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1 change: 0 additions & 1 deletion compiler/rustc_const_eval/src/lib.rs
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Expand Up @@ -10,7 +10,6 @@
#![feature(never_type)]
#![feature(rustdoc_internals)]
#![feature(slice_ptr_get)]
#![feature(strict_provenance)]
#![feature(trait_alias)]
#![feature(try_blocks)]
#![feature(yeet_expr)]
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1 change: 0 additions & 1 deletion compiler/rustc_data_structures/src/lib.rs
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Expand Up @@ -32,7 +32,6 @@
#![feature(ptr_alignment_type)]
#![feature(rustc_attrs)]
#![feature(rustdoc_internals)]
#![feature(strict_provenance)]
#![feature(test)]
#![feature(thread_id_value)]
#![feature(type_alias_impl_trait)]
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2 changes: 1 addition & 1 deletion compiler/rustc_feature/src/unstable.rs
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Expand Up @@ -596,7 +596,7 @@ 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.
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6 changes: 2 additions & 4 deletions compiler/rustc_lint_defs/src/builtin.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2721,7 +2721,6 @@ declare_lint! {
/// ### Example
///
/// ```rust
/// #![feature(strict_provenance)]
/// #![warn(fuzzy_provenance_casts)]
///
/// fn main() {
Expand Down Expand Up @@ -2755,7 +2754,7 @@ 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! {
Expand All @@ -2765,7 +2764,6 @@ declare_lint! {
/// ### Example
///
/// ```rust
/// #![feature(strict_provenance)]
/// #![warn(lossy_provenance_casts)]
///
/// fn main() {
Expand Down Expand Up @@ -2801,7 +2799,7 @@ 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! {
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1 change: 0 additions & 1 deletion compiler/rustc_middle/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,6 @@
#![feature(ptr_alignment_type)]
#![feature(rustc_attrs)]
#![feature(rustdoc_internals)]
#![feature(strict_provenance)]
#![feature(trait_upcasting)]
#![feature(trusted_len)]
#![feature(try_blocks)]
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2 changes: 1 addition & 1 deletion compiler/rustc_span/src/symbol.rs
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Expand Up @@ -1857,7 +1857,7 @@ symbols! {
str_trim,
str_trim_end,
str_trim_start,
strict_provenance,
strict_provenance_lints,
string_deref_patterns,
stringify,
struct_field_attributes,
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3 changes: 2 additions & 1 deletion library/alloc/benches/lib.rs
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Expand Up @@ -4,7 +4,8 @@
#![feature(iter_next_chunk)]
#![feature(repr_simd)]
#![feature(slice_partition_dedup)]
#![feature(strict_provenance)]
#![cfg_attr(bootstrap, feature(strict_provenance))]
#![cfg_attr(not(bootstrap), feature(strict_provenance_lints))]
#![feature(test)]
#![deny(fuzzy_provenance_casts)]

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3 changes: 2 additions & 1 deletion library/alloc/src/lib.rs
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Expand Up @@ -149,7 +149,6 @@
#![feature(slice_range)]
#![feature(std_internals)]
#![feature(str_internals)]
#![feature(strict_provenance)]
#![feature(trusted_fused)]
#![feature(trusted_len)]
#![feature(trusted_random_access)]
Expand All @@ -164,6 +163,8 @@
//
// Language features:
// tidy-alphabetical-start
#![cfg_attr(bootstrap, feature(strict_provenance))]
#![cfg_attr(not(bootstrap), feature(strict_provenance_lints))]
#![cfg_attr(not(test), feature(coroutine_trait))]
#![cfg_attr(test, feature(panic_update_hook))]
#![cfg_attr(test, feature(test))]
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3 changes: 2 additions & 1 deletion library/alloc/tests/lib.rs
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Expand Up @@ -35,7 +35,8 @@
#![feature(panic_update_hook)]
#![feature(pointer_is_aligned_to)]
#![feature(thin_box)]
#![feature(strict_provenance)]
#![cfg_attr(bootstrap, feature(strict_provenance))]
#![cfg_attr(not(bootstrap), feature(strict_provenance_lints))]
#![feature(drain_keep_rest)]
#![feature(local_waker)]
#![feature(vec_pop_if)]
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1 change: 0 additions & 1 deletion library/core/src/intrinsics.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2888,7 +2888,6 @@ where
/// #![feature(is_val_statically_known)]
/// #![feature(core_intrinsics)]
/// # #![allow(internal_features)]
/// #![feature(strict_provenance)]
/// use std::intrinsics::is_val_statically_known;
///
/// fn foo(x: &i32) -> bool {
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3 changes: 2 additions & 1 deletion library/core/src/lib.rs
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Expand Up @@ -180,7 +180,6 @@
#![feature(str_internals)]
#![feature(str_split_inclusive_remainder)]
#![feature(str_split_remainder)]
#![feature(strict_provenance)]
#![feature(ub_checks)]
#![feature(unchecked_neg)]
#![feature(unchecked_shifts)]
Expand All @@ -191,6 +190,8 @@
//
// Language features:
// tidy-alphabetical-start
#![cfg_attr(bootstrap, feature(strict_provenance))]
#![cfg_attr(not(bootstrap), feature(strict_provenance_lints))]
#![feature(abi_unadjusted)]
#![feature(adt_const_params)]
#![feature(allow_internal_unsafe)]
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2 changes: 1 addition & 1 deletion library/core/src/ptr/const_ptr.rs
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Expand Up @@ -505,7 +505,7 @@ impl<T: ?Sized> *const T {
/// ## Examples
///
/// ```
/// #![feature(ptr_mask, strict_provenance)]
/// #![feature(ptr_mask)]
/// let v = 17_u32;
/// let ptr: *const u32 = &v;
///
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2 changes: 0 additions & 2 deletions library/core/src/ptr/mod.rs
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Expand Up @@ -249,8 +249,6 @@
//! represent the tagged pointer as an actual pointer and not a `usize`*. For instance:
//!
//! ```
//! #![feature(strict_provenance)]
//!
//! unsafe {
//! // A flag we want to pack into our pointer
//! static HAS_DATA: usize = 0x1;
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2 changes: 1 addition & 1 deletion library/core/src/ptr/mut_ptr.rs
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Expand Up @@ -501,7 +501,7 @@ impl<T: ?Sized> *mut T {
/// ## Examples
///
/// ```
/// #![feature(ptr_mask, strict_provenance)]
/// #![feature(ptr_mask)]
/// let mut v = 17_u32;
/// let ptr: *mut u32 = &mut v;
///
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1 change: 0 additions & 1 deletion library/core/src/ptr/non_null.rs
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Expand Up @@ -732,7 +732,6 @@ impl<T: ?Sized> NonNull<T> {
/// *Incorrect* usage:
///
/// ```rust,no_run
/// #![feature(strict_provenance)]
/// use std::ptr::NonNull;
///
/// let ptr1 = NonNull::new(Box::into_raw(Box::new(0u8))).unwrap();
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12 changes: 6 additions & 6 deletions library/core/src/sync/atomic.rs
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Expand Up @@ -1739,7 +1739,7 @@ impl<T> AtomicPtr<T> {
/// # Examples
///
/// ```
/// #![feature(strict_provenance_atomic_ptr, strict_provenance)]
/// #![feature(strict_provenance_atomic_ptr)]
/// use core::sync::atomic::{AtomicPtr, Ordering};
///
/// let atom = AtomicPtr::<i64>::new(core::ptr::null_mut());
Expand Down Expand Up @@ -1819,7 +1819,7 @@ impl<T> AtomicPtr<T> {
/// # Examples
///
/// ```
/// #![feature(strict_provenance_atomic_ptr, strict_provenance)]
/// #![feature(strict_provenance_atomic_ptr)]
/// use core::sync::atomic::{AtomicPtr, Ordering};
///
/// let atom = AtomicPtr::<i64>::new(core::ptr::null_mut());
Expand Down Expand Up @@ -1855,7 +1855,7 @@ impl<T> AtomicPtr<T> {
/// # Examples
///
/// ```
/// #![feature(strict_provenance_atomic_ptr, strict_provenance)]
/// #![feature(strict_provenance_atomic_ptr)]
/// use core::sync::atomic::{AtomicPtr, Ordering};
///
/// let atom = AtomicPtr::<i64>::new(core::ptr::without_provenance_mut(1));
Expand Down Expand Up @@ -1900,7 +1900,7 @@ impl<T> AtomicPtr<T> {
/// # Examples
///
/// ```
/// #![feature(strict_provenance_atomic_ptr, strict_provenance)]
/// #![feature(strict_provenance_atomic_ptr)]
/// use core::sync::atomic::{AtomicPtr, Ordering};
///
/// let pointer = &mut 3i64 as *mut i64;
Expand Down Expand Up @@ -1951,7 +1951,7 @@ impl<T> AtomicPtr<T> {
/// # Examples
///
/// ```
/// #![feature(strict_provenance_atomic_ptr, strict_provenance)]
/// #![feature(strict_provenance_atomic_ptr)]
/// use core::sync::atomic::{AtomicPtr, Ordering};
///
/// let pointer = &mut 3i64 as *mut i64;
Expand Down Expand Up @@ -2001,7 +2001,7 @@ impl<T> AtomicPtr<T> {
/// # Examples
///
/// ```
/// #![feature(strict_provenance_atomic_ptr, strict_provenance)]
/// #![feature(strict_provenance_atomic_ptr)]
/// use core::sync::atomic::{AtomicPtr, Ordering};
///
/// let pointer = &mut 3i64 as *mut i64;
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3 changes: 2 additions & 1 deletion library/core/tests/lib.rs
Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
// tidy-alphabetical-start
#![cfg_attr(bootstrap, feature(strict_provenance))]
#![cfg_attr(not(bootstrap), feature(strict_provenance_lints))]
#![cfg_attr(target_has_atomic = "128", feature(integer_atomics))]
#![cfg_attr(test, feature(cfg_match))]
#![feature(alloc_layout_extra)]
Expand Down Expand Up @@ -98,7 +100,6 @@
#![feature(std_internals)]
#![feature(step_trait)]
#![feature(str_internals)]
#![feature(strict_provenance)]
#![feature(strict_provenance_atomic_ptr)]
#![feature(test)]
#![feature(trait_upcasting)]
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2 changes: 0 additions & 2 deletions library/panic_unwind/src/lib.rs
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Expand Up @@ -19,8 +19,6 @@
#![feature(panic_unwind)]
#![feature(staged_api)]
#![feature(std_internals)]
#![feature(strict_provenance)]
#![feature(exposed_provenance)]
#![feature(rustc_attrs)]
#![panic_runtime]
#![feature(panic_runtime)]
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1 change: 0 additions & 1 deletion library/portable-simd/crates/core_simd/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,6 @@
repr_simd,
simd_ffi,
staged_api,
strict_provenance,
prelude_import,
ptr_metadata
)]
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2 changes: 1 addition & 1 deletion library/portable-simd/crates/core_simd/tests/pointers.rs
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
#![feature(portable_simd, strict_provenance, exposed_provenance)]
#![feature(portable_simd)]

use core_simd::simd::{
ptr::{SimdConstPtr, SimdMutPtr},
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1 change: 0 additions & 1 deletion library/proc_macro/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,6 @@
#![feature(restricted_std)]
#![feature(rustc_attrs)]
#![feature(min_specialization)]
#![feature(strict_provenance)]
#![recursion_limit = "256"]
#![allow(internal_features)]
#![deny(ffi_unwind_calls)]
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4 changes: 2 additions & 2 deletions library/std/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -272,6 +272,8 @@
//
// Language features:
// tidy-alphabetical-start
#![cfg_attr(bootstrap, feature(strict_provenance))]
#![cfg_attr(not(bootstrap), feature(strict_provenance_lints))]
#![feature(alloc_error_handler)]
#![feature(allocator_internals)]
#![feature(allow_internal_unsafe)]
Expand Down Expand Up @@ -328,7 +330,6 @@
#![feature(error_iter)]
#![feature(exact_size_is_empty)]
#![feature(exclusive_wrapper)]
#![feature(exposed_provenance)]
#![feature(extend_one)]
#![feature(float_gamma)]
#![feature(float_minimum_maximum)]
Expand All @@ -352,7 +353,6 @@
#![feature(slice_range)]
#![feature(std_internals)]
#![feature(str_internals)]
#![feature(strict_provenance)]
#![feature(strict_provenance_atomic_ptr)]
#![feature(ub_checks)]
// tidy-alphabetical-end
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1 change: 0 additions & 1 deletion library/unwind/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@
#![unstable(feature = "panic_unwind", issue = "32837")]
#![feature(link_cfg)]
#![feature(staged_api)]
#![feature(strict_provenance)]
#![cfg_attr(target_arch = "wasm64", feature(simd_wasm64))]
#![cfg_attr(not(target_env = "msvc"), feature(libc))]
#![cfg_attr(
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Original file line number Diff line number Diff line change
@@ -1,18 +1,18 @@
# `strict_provenance`
# `strict_provenance_lints`

The tracking issue for this feature is: [#95228]

[#95228]: https://github.com/rust-lang/rust/issues/95228
-----

The `strict_provenance` feature allows to enable the `fuzzy_provenance_casts` and `lossy_provenance_casts` lints.
The `strict_provenance_lints` feature allows to enable the `fuzzy_provenance_casts` and `lossy_provenance_casts` lints.
These lint on casts between integers and pointers, that are recommended against or invalid in the strict provenance model.
The same feature gate is also used for the experimental strict provenance API in `std` (actually `core`).

## Example

```rust
#![feature(strict_provenance)]
#![feature(strict_provenance_lints)]
#![warn(fuzzy_provenance_casts)]

fn main() {
Expand Down
2 changes: 0 additions & 2 deletions src/tools/miri/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -12,8 +12,6 @@
#![feature(let_chains)]
#![feature(trait_upcasting)]
#![feature(strict_overflow_ops)]
#![feature(strict_provenance)]
#![feature(exposed_provenance)]
#![feature(pointer_is_aligned_to)]
// Configure clippy and other lints
#![allow(
Expand Down
Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
#![feature(strict_provenance)]
use std::ptr;

fn direct_raw(x: *const (i32, i32)) -> *const i32 {
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Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
// Should be caught even without retagging
//@compile-flags: -Zmiri-disable-stacked-borrows
#![feature(strict_provenance)]
use std::ptr::{self, addr_of_mut};

// Deref'ing a dangling raw pointer is fine, but for a dangling box it is not.
Expand Down
Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
// Should be caught even without retagging
//@compile-flags: -Zmiri-disable-stacked-borrows
#![feature(strict_provenance)]
use std::ptr::{self, addr_of_mut};

// Deref'ing a dangling raw pointer is fine, but for a dangling reference it is not.
Expand Down
Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
#![feature(strict_provenance)]
use core::ptr;

fn main() {
Expand Down
Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
#![feature(strict_provenance)]
use std::mem;

#[repr(C, usize)]
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Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
//@compile-flags: -Zmiri-permissive-provenance
#![feature(strict_provenance)]

use std::mem;

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1 change: 0 additions & 1 deletion src/tools/miri/tests/fail/provenance/ptr_int_unexposed.rs
Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
//@compile-flags: -Zmiri-permissive-provenance
#![feature(strict_provenance, exposed_provenance)]

fn main() {
let x: i32 = 3;
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1 change: 0 additions & 1 deletion src/tools/miri/tests/fail/provenance/ptr_invalid.rs
Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
#![feature(strict_provenance, exposed_provenance)]

// Ensure that a `ptr::without_provenance` ptr is truly invalid.
fn main() {
Expand Down
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