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allow mutable references in const values when they point to no memory

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This commit is contained in:
Ralf Jung 2024-02-16 09:58:53 +01:00
parent 0f806a9812
commit 0702701297
8 changed files with 93 additions and 84 deletions
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24
compiler/rustc_const_eval/src/errors.rs
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@ -603,18 +603,18 @@ impl<'tcx> ReportErrorExt for ValidationErrorInfo<'tcx> {
PtrToUninhabited { ptr_kind: PointerKind::Box, .. } => {
const_eval_validation_box_to_uninhabited
}
PtrToUninhabited { ptr_kind: PointerKind::Ref, .. } => {
PtrToUninhabited { ptr_kind: PointerKind::Ref(_), .. } => {
const_eval_validation_ref_to_uninhabited
}
PtrToStatic { ptr_kind: PointerKind::Box } => const_eval_validation_box_to_static,
PtrToStatic { ptr_kind: PointerKind::Ref } => const_eval_validation_ref_to_static,
PtrToStatic { ptr_kind: PointerKind::Ref(_) } => const_eval_validation_ref_to_static,
PointerAsInt { .. } => const_eval_validation_pointer_as_int,
PartialPointer => const_eval_validation_partial_pointer,
ConstRefToMutable => const_eval_validation_const_ref_to_mutable,
ConstRefToExtern => const_eval_validation_const_ref_to_extern,
MutableRefInConst => const_eval_validation_mutable_ref_in_const,
MutableRefInConstOrStatic => const_eval_validation_mutable_ref_in_const_or_static,
MutableRefToImmutable => const_eval_validation_mutable_ref_to_immutable,
NullFnPtr => const_eval_validation_null_fn_ptr,
NeverVal => const_eval_validation_never_val,
@ -630,37 +630,39 @@ impl<'tcx> ReportErrorExt for ValidationErrorInfo<'tcx> {
InvalidMetaSliceTooLarge { ptr_kind: PointerKind::Box } => {
const_eval_validation_invalid_box_slice_meta
}
InvalidMetaSliceTooLarge { ptr_kind: PointerKind::Ref } => {
InvalidMetaSliceTooLarge { ptr_kind: PointerKind::Ref(_) } => {
const_eval_validation_invalid_ref_slice_meta
}
InvalidMetaTooLarge { ptr_kind: PointerKind::Box } => {
const_eval_validation_invalid_box_meta
}
InvalidMetaTooLarge { ptr_kind: PointerKind::Ref } => {
InvalidMetaTooLarge { ptr_kind: PointerKind::Ref(_) } => {
const_eval_validation_invalid_ref_meta
}
UnalignedPtr { ptr_kind: PointerKind::Ref, .. } => const_eval_validation_unaligned_ref,
UnalignedPtr { ptr_kind: PointerKind::Ref(_), .. } => {
const_eval_validation_unaligned_ref
}
UnalignedPtr { ptr_kind: PointerKind::Box, .. } => const_eval_validation_unaligned_box,
NullPtr { ptr_kind: PointerKind::Box } => const_eval_validation_null_box,
NullPtr { ptr_kind: PointerKind::Ref } => const_eval_validation_null_ref,
NullPtr { ptr_kind: PointerKind::Ref(_) } => const_eval_validation_null_ref,
DanglingPtrNoProvenance { ptr_kind: PointerKind::Box, .. } => {
const_eval_validation_dangling_box_no_provenance
}
DanglingPtrNoProvenance { ptr_kind: PointerKind::Ref, .. } => {
DanglingPtrNoProvenance { ptr_kind: PointerKind::Ref(_), .. } => {
const_eval_validation_dangling_ref_no_provenance
}
DanglingPtrOutOfBounds { ptr_kind: PointerKind::Box } => {
const_eval_validation_dangling_box_out_of_bounds
}
DanglingPtrOutOfBounds { ptr_kind: PointerKind::Ref } => {
DanglingPtrOutOfBounds { ptr_kind: PointerKind::Ref(_) } => {
const_eval_validation_dangling_ref_out_of_bounds
}
DanglingPtrUseAfterFree { ptr_kind: PointerKind::Box } => {
const_eval_validation_dangling_box_use_after_free
}
DanglingPtrUseAfterFree { ptr_kind: PointerKind::Ref } => {
DanglingPtrUseAfterFree { ptr_kind: PointerKind::Ref(_) } => {
const_eval_validation_dangling_ref_use_after_free
}
InvalidBool { .. } => const_eval_validation_invalid_bool,
@ -766,7 +768,7 @@ impl<'tcx> ReportErrorExt for ValidationErrorInfo<'tcx> {
}
NullPtr { .. }
| PtrToStatic { .. }
| MutableRefInConst
| MutableRefInConstOrStatic
| ConstRefToMutable
| ConstRefToExtern
| MutableRefToImmutable