diff --git a/compiler/rustc_const_eval/src/interpret/validity.rs b/compiler/rustc_const_eval/src/interpret/validity.rs index 469af35ec1bd..ca38f7792565 100644 --- a/compiler/rustc_const_eval/src/interpret/validity.rs +++ b/compiler/rustc_const_eval/src/interpret/validity.rs @@ -14,6 +14,7 @@ use hir::def::DefKind; use rustc_ast::Mutability; use rustc_data_structures::fx::FxHashSet; use rustc_hir as hir; +use rustc_middle::bug; use rustc_middle::mir::interpret::ValidationErrorKind::{self, *}; use rustc_middle::mir::interpret::{ alloc_range, ExpectedKind, InterpError, InvalidMetaKind, Misalignment, PointerKind, Provenance, @@ -21,7 +22,6 @@ use rustc_middle::mir::interpret::{ }; use rustc_middle::ty::layout::{LayoutCx, LayoutOf, TyAndLayout}; use rustc_middle::ty::{self, Ty, TyCtxt}; -use rustc_middle::{bug, span_bug}; use rustc_span::symbol::{sym, Symbol}; use rustc_target::abi::{ Abi, FieldIdx, FieldsShape, Scalar as ScalarAbi, Size, VariantIdx, Variants, WrappingRange, @@ -617,13 +617,7 @@ impl<'rt, 'tcx, M: Machine<'tcx>> ValidityVisitor<'rt, 'tcx, M> { if ptr_expected_mutbl == Mutability::Mut && alloc_actual_mutbl == Mutability::Not { - if !self.ecx.tcx.sess.opts.unstable_opts.unleash_the_miri_inside_of_you - { - span_bug!( - self.ecx.tcx.span, - "the static const safety checks accepted mutable references they should not have accepted" - ); - } + // This can actually occur with transmutes. throw_validation_failure!(self.path, MutableRefToImmutable); } // In a const, everything must be completely immutable. diff --git a/src/ci/github-actions/jobs.yml b/src/ci/github-actions/jobs.yml index 14c0e4d2a67a..f65083eec470 100644 --- a/src/ci/github-actions/jobs.yml +++ b/src/ci/github-actions/jobs.yml @@ -24,6 +24,10 @@ runners: os: macos-14 <<: *base-job + - &job-windows + os: windows-2022 + <<: *base-job + - &job-windows-8c os: windows-2022-8core-32gb <<: *base-job @@ -388,7 +392,7 @@ auto: python x.py miri --stage 2 library/alloc --test-args notest && python x.py miri --stage 2 library/std --test-args notest RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-lld - <<: *job-windows-8c + <<: *job-windows # 32/64-bit MinGW builds. # diff --git a/tests/crashes/129262.rs b/tests/crashes/129262.rs new file mode 100644 index 000000000000..c430af35988d --- /dev/null +++ b/tests/crashes/129262.rs @@ -0,0 +1,21 @@ +//@ known-bug: rust-lang/rust#129262 +//@ compile-flags: -Zvalidate-mir --edition=2018 --crate-type=lib -Copt-level=3 + +#![feature(async_closure)] + +fn main() {} + +fn needs_fn_mut(mut x: impl FnMut() -> T) { + x(); +} + +fn hello(x: Ty) { + needs_fn_mut(async || { + x.hello(); + }); +} + +struct Ty; +impl Ty { + fn hello(self) {} +} diff --git a/tests/crashes/129850.rs b/tests/crashes/129850.rs new file mode 100644 index 000000000000..9c04805587a6 --- /dev/null +++ b/tests/crashes/129850.rs @@ -0,0 +1,9 @@ +//@ known-bug: rust-lang/rust#129850 + +pub trait Foo2 { + fn bar<'a: 'a>(&'a mut self) -> impl Sized + use<'static>; +} + +impl Foo2 for () { + fn bar<'a: 'a>(&'a mut self) -> impl Sized + 'a {} +} diff --git a/tests/crashes/130104.rs b/tests/crashes/130104.rs new file mode 100644 index 000000000000..0ffc21ad3604 --- /dev/null +++ b/tests/crashes/130104.rs @@ -0,0 +1,6 @@ +//@ known-bug: rust-lang/rust#130104 + +fn main() { + let non_secure_function = + core::mem::transmute:: _, extern "C-cmse-nonsecure-call" fn() -> _>; +} diff --git a/tests/crashes/130310.rs b/tests/crashes/130310.rs new file mode 100644 index 000000000000..d59dd39983c7 --- /dev/null +++ b/tests/crashes/130310.rs @@ -0,0 +1,15 @@ +//@ known-bug: rust-lang/rust#130310 + +use std::marker::PhantomData; + +#[repr(C)] +struct A { + a: *const A>, + p: PhantomData, +} + +extern "C" { + fn f(a: *const A<()>); +} + +fn main() {} diff --git a/tests/crashes/130346.rs b/tests/crashes/130346.rs new file mode 100644 index 000000000000..ee25f0fcc5b1 --- /dev/null +++ b/tests/crashes/130346.rs @@ -0,0 +1,10 @@ +//@ known-bug: rust-lang/rust#130346 + +#![feature(non_lifetime_binders)] +#![allow(unused)] + +trait A: Iterator {} + +fn demo(x: &mut impl for A) { + let _: Option = x.next(); // Removing this line stops the ICE +} diff --git a/tests/crashes/130372-1.rs b/tests/crashes/130372-1.rs new file mode 100644 index 000000000000..5d58c14e7abf --- /dev/null +++ b/tests/crashes/130372-1.rs @@ -0,0 +1,9 @@ +//@ known-bug: rust-lang/rust#130372 + +pub fn variadic_fn(n: usize, mut args: ...) {} + +reuse variadic_fn; + +fn main() { + variadic_fn(); +} diff --git a/tests/crashes/130372-2.rs b/tests/crashes/130372-2.rs new file mode 100644 index 000000000000..46404191e329 --- /dev/null +++ b/tests/crashes/130372-2.rs @@ -0,0 +1,11 @@ +//@ known-bug: rust-lang/rust#130372 + +pub fn test_va_copy(_: u64, mut ap: ...) {} + +pub fn main() { + unsafe { + test_va_copy(); + + call(x); + } +} diff --git a/tests/crashes/130372-3.rs b/tests/crashes/130372-3.rs new file mode 100644 index 000000000000..6e1c57437c8a --- /dev/null +++ b/tests/crashes/130372-3.rs @@ -0,0 +1,7 @@ +//@ known-bug: rust-lang/rust#130372 + +fn bar() -> impl Fn() { + wrap() +} + +fn wrap(...: impl ...) -> impl Fn() {} diff --git a/tests/crashes/130399.rs b/tests/crashes/130399.rs new file mode 100644 index 000000000000..2248c8c0124a --- /dev/null +++ b/tests/crashes/130399.rs @@ -0,0 +1,5 @@ +//@ known-bug: rust-lang/rust#130399 + +fn elided(main: &()) -> impl Sized + use
{} + +fn main() {} diff --git a/tests/ui/consts/const-eval/transmute-const.64bit.stderr b/tests/ui/consts/const-eval/transmute-const.64bit.stderr deleted file mode 100644 index 35a5cabaa671..000000000000 --- a/tests/ui/consts/const-eval/transmute-const.64bit.stderr +++ /dev/null @@ -1,14 +0,0 @@ -error[E0080]: it is undefined behavior to use this value - --> $DIR/transmute-const.rs:4:1 - | -LL | static FOO: bool = unsafe { mem::transmute(3u8) }; - | ^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0x03, but expected a boolean - | - = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior. - = note: the raw bytes of the constant (size: 1, align: 1) { - 03 │ . - } - -error: aborting due to 1 previous error - -For more information about this error, try `rustc --explain E0080`. diff --git a/tests/ui/consts/const-eval/transmute-const.rs b/tests/ui/consts/const-eval/transmute-const.rs index bf25b52ed66f..1cfad00ca76d 100644 --- a/tests/ui/consts/const-eval/transmute-const.rs +++ b/tests/ui/consts/const-eval/transmute-const.rs @@ -1,4 +1,3 @@ -//@ stderr-per-bitwidth use std::mem; static FOO: bool = unsafe { mem::transmute(3u8) }; diff --git a/tests/ui/consts/const-eval/transmute-const.32bit.stderr b/tests/ui/consts/const-eval/transmute-const.stderr similarity index 95% rename from tests/ui/consts/const-eval/transmute-const.32bit.stderr rename to tests/ui/consts/const-eval/transmute-const.stderr index 35a5cabaa671..d72289487d7b 100644 --- a/tests/ui/consts/const-eval/transmute-const.32bit.stderr +++ b/tests/ui/consts/const-eval/transmute-const.stderr @@ -1,5 +1,5 @@ error[E0080]: it is undefined behavior to use this value - --> $DIR/transmute-const.rs:4:1 + --> $DIR/transmute-const.rs:3:1 | LL | static FOO: bool = unsafe { mem::transmute(3u8) }; | ^^^^^^^^^^^^^^^^ constructing invalid value: encountered 0x03, but expected a boolean diff --git a/tests/ui/consts/const-mut-refs/mut_ref_in_final.rs b/tests/ui/consts/const-mut-refs/mut_ref_in_final.rs index 60a9171731ee..af7463e6574f 100644 --- a/tests/ui/consts/const-mut-refs/mut_ref_in_final.rs +++ b/tests/ui/consts/const-mut-refs/mut_ref_in_final.rs @@ -1,4 +1,9 @@ +//@ normalize-stderr-test: "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)" +//@ normalize-stderr-test: "( 0x[0-9a-f][0-9a-f] │)? ([0-9a-f][0-9a-f] |__ |╾─*ALLOC[0-9]+(\+[a-z0-9]+)?()?─*╼ )+ *│.*" -> " HEX_DUMP" +//@ normalize-stderr-test: "HEX_DUMP\s*\n\s*HEX_DUMP" -> "HEX_DUMP" + use std::cell::UnsafeCell; +use std::mem; const NULL: *mut i32 = std::ptr::null_mut(); const A: *const i32 = &4; @@ -17,6 +22,11 @@ const B3: Option<&mut i32> = Some(&mut 42); //~ ERROR temporary value dropped wh const fn helper(x: &mut i32) -> Option<&mut i32> { Some(x) } const B4: Option<&mut i32> = helper(&mut 42); //~ ERROR temporary value dropped while borrowed +// Not ok, since it points to read-only memory. +const IMMUT_MUT_REF: &mut u16 = unsafe { mem::transmute(&13) }; +//~^ ERROR undefined behavior to use this value +//~| pointing to read-only memory + // Ok, because no references to mutable data exist here, since the `{}` moves // its value and then takes a reference to that. const C: *const i32 = &{ diff --git a/tests/ui/consts/const-mut-refs/mut_ref_in_final.stderr b/tests/ui/consts/const-mut-refs/mut_ref_in_final.stderr index 53d7b3d65f9d..4f50ae323129 100644 --- a/tests/ui/consts/const-mut-refs/mut_ref_in_final.stderr +++ b/tests/ui/consts/const-mut-refs/mut_ref_in_final.stderr @@ -1,11 +1,11 @@ error[E0764]: mutable references are not allowed in the final value of constants - --> $DIR/mut_ref_in_final.rs:9:21 + --> $DIR/mut_ref_in_final.rs:14:21 | LL | const B: *mut i32 = &mut 4; | ^^^^^^ error[E0716]: temporary value dropped while borrowed - --> $DIR/mut_ref_in_final.rs:15:40 + --> $DIR/mut_ref_in_final.rs:20:40 | LL | const B3: Option<&mut i32> = Some(&mut 42); | ----------^^- @@ -15,7 +15,7 @@ LL | const B3: Option<&mut i32> = Some(&mut 42); | using this value as a constant requires that borrow lasts for `'static` error[E0716]: temporary value dropped while borrowed - --> $DIR/mut_ref_in_final.rs:18:42 + --> $DIR/mut_ref_in_final.rs:23:42 | LL | const B4: Option<&mut i32> = helper(&mut 42); | ------------^^- @@ -24,8 +24,19 @@ LL | const B4: Option<&mut i32> = helper(&mut 42); | | creates a temporary value which is freed while still in use | using this value as a constant requires that borrow lasts for `'static` +error[E0080]: it is undefined behavior to use this value + --> $DIR/mut_ref_in_final.rs:26:1 + | +LL | const IMMUT_MUT_REF: &mut u16 = unsafe { mem::transmute(&13) }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered mutable reference or box pointing to read-only memory + | + = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior. + = note: the raw bytes of the constant (size: $SIZE, align: $ALIGN) { + HEX_DUMP + } + error[E0716]: temporary value dropped while borrowed - --> $DIR/mut_ref_in_final.rs:40:65 + --> $DIR/mut_ref_in_final.rs:50:65 | LL | const FOO: NotAMutex<&mut i32> = NotAMutex(UnsafeCell::new(&mut 42)); | -------------------------------^^-- @@ -35,7 +46,7 @@ LL | const FOO: NotAMutex<&mut i32> = NotAMutex(UnsafeCell::new(&mut 42)); | using this value as a constant requires that borrow lasts for `'static` error[E0716]: temporary value dropped while borrowed - --> $DIR/mut_ref_in_final.rs:43:67 + --> $DIR/mut_ref_in_final.rs:53:67 | LL | static FOO2: NotAMutex<&mut i32> = NotAMutex(UnsafeCell::new(&mut 42)); | -------------------------------^^-- @@ -45,7 +56,7 @@ LL | static FOO2: NotAMutex<&mut i32> = NotAMutex(UnsafeCell::new(&mut 42)); | using this value as a static requires that borrow lasts for `'static` error[E0716]: temporary value dropped while borrowed - --> $DIR/mut_ref_in_final.rs:46:71 + --> $DIR/mut_ref_in_final.rs:56:71 | LL | static mut FOO3: NotAMutex<&mut i32> = NotAMutex(UnsafeCell::new(&mut 42)); | -------------------------------^^-- @@ -55,30 +66,30 @@ LL | static mut FOO3: NotAMutex<&mut i32> = NotAMutex(UnsafeCell::new(&mut 42)); | using this value as a static requires that borrow lasts for `'static` error[E0764]: mutable references are not allowed in the final value of statics - --> $DIR/mut_ref_in_final.rs:59:53 + --> $DIR/mut_ref_in_final.rs:69:53 | LL | static RAW_MUT_CAST_S: SyncPtr = SyncPtr { x : &mut 42 as *mut _ as *const _ }; | ^^^^^^^ error[E0764]: mutable references are not allowed in the final value of statics - --> $DIR/mut_ref_in_final.rs:61:54 + --> $DIR/mut_ref_in_final.rs:71:54 | LL | static RAW_MUT_COERCE_S: SyncPtr = SyncPtr { x: &mut 0 }; | ^^^^^^ error[E0764]: mutable references are not allowed in the final value of constants - --> $DIR/mut_ref_in_final.rs:63:52 + --> $DIR/mut_ref_in_final.rs:73:52 | LL | const RAW_MUT_CAST_C: SyncPtr = SyncPtr { x : &mut 42 as *mut _ as *const _ }; | ^^^^^^^ error[E0764]: mutable references are not allowed in the final value of constants - --> $DIR/mut_ref_in_final.rs:65:53 + --> $DIR/mut_ref_in_final.rs:75:53 | LL | const RAW_MUT_COERCE_C: SyncPtr = SyncPtr { x: &mut 0 }; | ^^^^^^ -error: aborting due to 10 previous errors +error: aborting due to 11 previous errors -Some errors have detailed explanations: E0716, E0764. -For more information about an error, try `rustc --explain E0716`. +Some errors have detailed explanations: E0080, E0716, E0764. +For more information about an error, try `rustc --explain E0080`.