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Merge ty::TyBox into ty::TyAdt

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This commit is contained in:
Vadim Petrochenkov 2017-01-21 17:40:31 +03:00
parent 55f9712d14
commit ffba0cea62
73 changed files with 315 additions and 345 deletions
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1
src/liballoc/boxed.rs
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@ -103,6 +103,7 @@ pub struct ExchangeHeapSingleton {
///
/// See the [module-level documentation](../../std/boxed/index.html) for more.
#[lang = "owned_box"]
#[fundamental]
#[stable(feature = "rust1", since = "1.0.0")]
pub struct Box<T: ?Sized>(Unique<T>);

1
src/librustc/infer/freshen.rs
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@ -156,7 +156,6 @@ impl<'a, 'gcx, 'tcx> TypeFolder<'gcx, 'tcx> for TypeFreshener<'a, 'gcx, 'tcx> {
ty::TyUint(..) |
ty::TyFloat(..) |
ty::TyAdt(..) |
ty::TyBox(..) |
ty::TyStr |
ty::TyError |
ty::TyArray(..) |

2
src/librustc/middle/mem_categorization.rs
View File

@ -961,7 +961,7 @@ impl<'a, 'gcx, 'tcx> MemCategorizationContext<'a, 'gcx, 'tcx> {
-> cmt<'tcx>
{
let ptr = match base_cmt.ty.sty {
ty::TyBox(..) => Unique,
ty::TyAdt(def, ..) if def.is_box() => Unique,
ty::TyRawPtr(ref mt) => UnsafePtr(mt.mutbl),
ty::TyRef(r, mt) => {
let bk = ty::BorrowKind::from_mutbl(mt.mutbl);

13
src/librustc/traits/coherence.rs
View File

@ -199,7 +199,7 @@ fn orphan_check_trait_ref<'tcx>(tcx: TyCtxt,
fn uncovered_tys<'tcx>(tcx: TyCtxt, ty: Ty<'tcx>, infer_is_local: InferIsLocal)
-> Vec<Ty<'tcx>> {
if ty_is_local_constructor(tcx, ty, infer_is_local) {
if ty_is_local_constructor(ty, infer_is_local) {
vec![]
} else if fundamental_ty(tcx, ty) {
ty.walk_shallow()
@ -219,13 +219,13 @@ fn is_type_parameter(ty: Ty) -> bool {
}
fn ty_is_local(tcx: TyCtxt, ty: Ty, infer_is_local: InferIsLocal) -> bool {
ty_is_local_constructor(tcx, ty, infer_is_local) ||
ty_is_local_constructor(ty, infer_is_local) ||
fundamental_ty(tcx, ty) && ty.walk_shallow().any(|t| ty_is_local(tcx, t, infer_is_local))
}
fn fundamental_ty(tcx: TyCtxt, ty: Ty) -> bool {
match ty.sty {
ty::TyBox(..) | ty::TyRef(..) => true,
ty::TyRef(..) => true,
ty::TyAdt(def, _) => def.is_fundamental(),
ty::TyDynamic(ref data, ..) => {
data.principal().map_or(false, |p| tcx.has_attr(p.def_id(), "fundamental"))
@ -234,7 +234,7 @@ fn fundamental_ty(tcx: TyCtxt, ty: Ty) -> bool {
}
}
fn ty_is_local_constructor(tcx: TyCtxt, ty: Ty, infer_is_local: InferIsLocal)-> bool {
fn ty_is_local_constructor(ty: Ty, infer_is_local: InferIsLocal)-> bool {
debug!("ty_is_local_constructor({:?})", ty);
match ty.sty {
@ -265,11 +265,6 @@ fn ty_is_local_constructor(tcx: TyCtxt, ty: Ty, infer_is_local: InferIsLocal)->
def.did.is_local()
}
ty::TyBox(_) => { // Box<T>
let krate = tcx.lang_items.owned_box().map(|d| d.krate);
krate == Some(LOCAL_CRATE)
}
ty::TyDynamic(ref tt, ..) => {
tt.principal().map_or(false, |p| p.def_id().is_local())
}

2
src/librustc/traits/error_reporting.rs
View File

@ -154,7 +154,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
ty::TyStr => Some(2),
ty::TyInt(..) | ty::TyUint(..) | ty::TyInfer(ty::IntVar(..)) => Some(3),
ty::TyFloat(..) | ty::TyInfer(ty::FloatVar(..)) => Some(4),
ty::TyBox(..) | ty::TyRef(..) | ty::TyRawPtr(..) => Some(5),
ty::TyRef(..) | ty::TyRawPtr(..) => Some(5),
ty::TyArray(..) | ty::TySlice(..) => Some(6),
ty::TyFnDef(..) | ty::TyFnPtr(..) => Some(7),
ty::TyDynamic(..) => Some(8),

8
src/librustc/traits/select.rs
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@ -1735,7 +1735,7 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
ty::TyInfer(ty::IntVar(_)) | ty::TyInfer(ty::FloatVar(_)) |
ty::TyUint(_) | ty::TyInt(_) | ty::TyBool | ty::TyFloat(_) |
ty::TyFnDef(..) | ty::TyFnPtr(_) | ty::TyRawPtr(..) |
ty::TyChar | ty::TyBox(_) | ty::TyRef(..) |
ty::TyChar | ty::TyRef(..) |
ty::TyArray(..) | ty::TyClosure(..) | ty::TyNever |
ty::TyError => {
// safe for everything
@ -1788,7 +1788,7 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
Where(ty::Binder(Vec::new()))
}
ty::TyBox(_) | ty::TyDynamic(..) | ty::TyStr | ty::TySlice(..) |
ty::TyDynamic(..) | ty::TyStr | ty::TySlice(..) |
ty::TyClosure(..) |
ty::TyRef(_, ty::TypeAndMut { ty: _, mutbl: hir::MutMutable }) => {
Never
@ -1865,10 +1865,6 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
t);
}
ty::TyBox(referent_ty) => { // Box<T>
vec![referent_ty]
}
ty::TyRawPtr(ty::TypeAndMut { ty: element_ty, ..}) |
ty::TyRef(_, ty::TypeAndMut { ty: element_ty, ..}) => {
vec![element_ty]

8
src/librustc/ty/contents.rs
View File

@ -191,10 +191,6 @@ impl<'a, 'tcx> ty::TyS<'tcx> {
TC::None
}
ty::TyBox(typ) => {
tc_ty(tcx, typ, cache).owned_pointer()
}
ty::TyDynamic(..) => {
TC::All - TC::InteriorParam
}
@ -227,6 +223,10 @@ impl<'a, 'tcx> ty::TyS<'tcx> {
|ty| tc_ty(tcx, *ty, cache))
}
ty::TyAdt(def, _) if def.is_box() => {
tc_ty(tcx, ty.boxed_ty(), cache).owned_pointer()
}
ty::TyAdt(def, substs) => {
let mut res =
TypeContents::union(&def.variants, |v| {

8
src/librustc/ty/context.rs
View File

@ -19,6 +19,7 @@ use hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
use hir::map as hir_map;
use hir::map::DisambiguatedDefPathData;
use middle::free_region::FreeRegionMap;
use middle::lang_items;
use middle::region::RegionMaps;
use middle::resolve_lifetime;
use middle::stability;
@ -1088,7 +1089,7 @@ impl<'a, 'tcx> TyCtxt<'a, 'tcx, 'tcx> {
pub fn print_debug_stats(self) {
sty_debug_print!(
self,
TyAdt, TyBox, TyArray, TySlice, TyRawPtr, TyRef, TyFnDef, TyFnPtr,
TyAdt, TyArray, TySlice, TyRawPtr, TyRef, TyFnDef, TyFnPtr,
TyDynamic, TyClosure, TyTuple, TyParam, TyInfer, TyProjection, TyAnon);
println!("Substs interner: #{}", self.interners.substs.borrow().len());
@ -1336,7 +1337,10 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
}
pub fn mk_box(self, ty: Ty<'tcx>) -> Ty<'tcx> {
self.mk_ty(TyBox(ty))
let def_id = self.require_lang_item(lang_items::OwnedBoxLangItem);
let adt_def = self.lookup_adt_def(def_id);
let substs = self.mk_substs(iter::once(Kind::from(ty)));
self.mk_ty(TyAdt(adt_def, substs))
}
pub fn mk_ptr(self, tm: TypeAndMut<'tcx>) -> Ty<'tcx> {

1
src/librustc/ty/error.rs
View File

@ -181,7 +181,6 @@ impl<'a, 'gcx, 'lcx, 'tcx> ty::TyS<'tcx> {
ty::TyTuple(ref tys) if tys.is_empty() => self.to_string(),
ty::TyAdt(def, _) => format!("{} `{}`", def.descr(), tcx.item_path_str(def.did)),
ty::TyBox(_) => "box".to_string(),
ty::TyArray(_, n) => format!("array of {} elements", n),
ty::TySlice(_) => "slice".to_string(),
ty::TyRawPtr(_) => "*-ptr".to_string(),

5
src/librustc/ty/fast_reject.rs
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@ -11,7 +11,6 @@
use hir::def_id::DefId;
use ty::{self, Ty, TyCtxt};
use syntax::ast;
use middle::lang_items::OwnedBoxLangItem;
use self::SimplifiedType::*;
@ -69,10 +68,6 @@ pub fn simplify_type<'a, 'gcx, 'tcx>(tcx: TyCtxt<'a, 'gcx, 'tcx>,
// view of possibly unifying
simplify_type(tcx, mt.ty, can_simplify_params)
}
ty::TyBox(_) => {
// treat like we would treat `Box`
Some(AdtSimplifiedType(tcx.require_lang_item(OwnedBoxLangItem)))
}
ty::TyClosure(def_id, _) => {
Some(ClosureSimplifiedType(def_id))
}

2
src/librustc/ty/flags.rs
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@ -138,7 +138,7 @@ impl FlagComputation {
self.add_region(r);
}
&ty::TyBox(tt) | &ty::TyArray(tt, _) | &ty::TySlice(tt) => {
&ty::TyArray(tt, _) | &ty::TySlice(tt) => {
self.add_ty(tt)
}

3
src/librustc/ty/item_path.rs
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@ -314,8 +314,7 @@ pub fn characteristic_def_id_of_type(ty: Ty) -> Option<DefId> {
ty::TyDynamic(data, ..) => data.principal().map(|p| p.def_id()),
ty::TyArray(subty, _) |
ty::TySlice(subty) |
ty::TyBox(subty) => characteristic_def_id_of_type(subty),
ty::TySlice(subty) => characteristic_def_id_of_type(subty),
ty::TyRawPtr(mt) |
ty::TyRef(_, mt) => characteristic_def_id_of_type(mt.ty),

77
src/librustc/ty/layout.rs
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@ -1053,6 +1053,23 @@ impl<'a, 'gcx, 'tcx> Layout {
let dl = &tcx.data_layout;
assert!(!ty.has_infer_types());
let ptr_layout = |pointee: Ty<'gcx>| {
let non_zero = !ty.is_unsafe_ptr();
let pointee = normalize_associated_type(infcx, pointee);
if pointee.is_sized(tcx, &infcx.parameter_environment, DUMMY_SP) {
Ok(Scalar { value: Pointer, non_zero: non_zero })
} else {
let unsized_part = tcx.struct_tail(pointee);
let meta = match unsized_part.sty {
ty::TySlice(_) | ty::TyStr => {
Int(dl.ptr_sized_integer())
}
ty::TyDynamic(..) => Pointer,
_ => return Err(LayoutError::Unknown(unsized_part))
};
Ok(FatPointer { metadata: meta, non_zero: non_zero })
}
};
let layout = match ty.sty {
// Basic scalars.
@ -1082,24 +1099,12 @@ impl<'a, 'gcx, 'tcx> Layout {
},
// Potentially-fat pointers.
ty::TyBox(pointee) |
ty::TyRef(_, ty::TypeAndMut { ty: pointee, .. }) |
ty::TyRawPtr(ty::TypeAndMut { ty: pointee, .. }) => {
let non_zero = !ty.is_unsafe_ptr();
let pointee = normalize_associated_type(infcx, pointee);
if pointee.is_sized(tcx, &infcx.parameter_environment, DUMMY_SP) {
Scalar { value: Pointer, non_zero: non_zero }
} else {
let unsized_part = tcx.struct_tail(pointee);
let meta = match unsized_part.sty {
ty::TySlice(_) | ty::TyStr => {
Int(dl.ptr_sized_integer())
}
ty::TyDynamic(..) => Pointer,
_ => return Err(LayoutError::Unknown(unsized_part))
};
FatPointer { metadata: meta, non_zero: non_zero }
}
ptr_layout(pointee)?
}
ty::TyAdt(def, _) if def.is_box() => {
ptr_layout(ty.boxed_ty())?
}
// Arrays and slices.
@ -1560,26 +1565,32 @@ impl<'a, 'gcx, 'tcx> SizeSkeleton<'gcx> {
Err(err) => err
};
let ptr_skeleton = |pointee: Ty<'gcx>| {
let non_zero = !ty.is_unsafe_ptr();
let tail = tcx.struct_tail(pointee);
match tail.sty {
ty::TyParam(_) | ty::TyProjection(_) => {
assert!(tail.has_param_types() || tail.has_self_ty());
Ok(SizeSkeleton::Pointer {
non_zero: non_zero,
tail: tcx.erase_regions(&tail)
})
}
_ => {
bug!("SizeSkeleton::compute({}): layout errored ({}), yet \
tail `{}` is not a type parameter or a projection",
ty, err, tail)
}
}
};
match ty.sty {
ty::TyBox(pointee) |
ty::TyRef(_, ty::TypeAndMut { ty: pointee, .. }) |
ty::TyRawPtr(ty::TypeAndMut { ty: pointee, .. }) => {
let non_zero = !ty.is_unsafe_ptr();
let tail = tcx.struct_tail(pointee);
match tail.sty {
ty::TyParam(_) | ty::TyProjection(_) => {
assert!(tail.has_param_types() || tail.has_self_ty());
Ok(SizeSkeleton::Pointer {
non_zero: non_zero,
tail: tcx.erase_regions(&tail)
})
}
_ => {
bug!("SizeSkeleton::compute({}): layout errored ({}), yet \
tail `{}` is not a type parameter or a projection",
ty, err, tail)
}
}
ptr_skeleton(pointee)
}
ty::TyAdt(def, _) if def.is_box() => {
ptr_skeleton(ty.boxed_ty())
}
ty::TyAdt(def, substs) => {

12
src/librustc/ty/mod.rs
View File

@ -1302,6 +1302,7 @@ bitflags! {
const IS_SIMD = 1 << 4,
const IS_FUNDAMENTAL = 1 << 5,
const IS_UNION = 1 << 6,
const IS_BOX = 1 << 7,
}
}
@ -1376,6 +1377,9 @@ impl<'a, 'gcx, 'tcx> AdtDef {
if Some(did) == tcx.lang_items.phantom_data() {
flags = flags | AdtFlags::IS_PHANTOM_DATA;
}
if Some(did) == tcx.lang_items.owned_box() {
flags = flags | AdtFlags::IS_BOX;
}
match kind {
AdtKind::Enum => flags = flags | AdtFlags::IS_ENUM,
AdtKind::Union => flags = flags | AdtFlags::IS_UNION,
@ -1468,6 +1472,12 @@ impl<'a, 'gcx, 'tcx> AdtDef {
self.flags.get().intersects(AdtFlags::IS_PHANTOM_DATA)
}
/// Returns true if this is Box<T>.
#[inline]
pub fn is_box(&self) -> bool {
self.flags.get().intersects(AdtFlags::IS_BOX)
}
/// Returns whether this type has a destructor.
pub fn has_dtor(&self) -> bool {
self.dtor_kind().is_present()
@ -1641,7 +1651,7 @@ impl<'a, 'gcx, 'tcx> AdtDef {
-> Vec<Ty<'tcx>> {
let result = match ty.sty {
TyBool | TyChar | TyInt(..) | TyUint(..) | TyFloat(..) |
TyBox(..) | TyRawPtr(..) | TyRef(..) | TyFnDef(..) | TyFnPtr(_) |
TyRawPtr(..) | TyRef(..) | TyFnDef(..) | TyFnPtr(_) |
TyArray(..) | TyClosure(..) | TyNever => {
vec![]
}

1
src/librustc/ty/outlives.rs
View File

@ -167,7 +167,6 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
ty::TyFloat(..) | // OutlivesScalar
ty::TyNever | // ...
ty::TyAdt(..) | // OutlivesNominalType
ty::TyBox(..) | // OutlivesNominalType (ish)
ty::TyAnon(..) | // OutlivesNominalType (ish)
ty::TyStr | // OutlivesScalar (ish)
ty::TyArray(..) | // ...

6
src/librustc/ty/relate.rs
View File

@ -418,12 +418,6 @@ pub fn super_relate_tys<'a, 'gcx, 'tcx, R>(relation: &mut R,
Ok(tcx.mk_closure_from_closure_substs(a_id, substs))
}
(&ty::TyBox(a_inner), &ty::TyBox(b_inner)) =>
{
let typ = relation.relate(&a_inner, &b_inner)?;
Ok(tcx.mk_box(typ))
}
(&ty::TyRawPtr(ref a_mt), &ty::TyRawPtr(ref b_mt)) =>
{
let mt = relation.relate(a_mt, b_mt)?;

2
src/librustc/ty/structural_impls.rs
View File

@ -468,7 +468,6 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::Slice<Ty<'tcx>> {
impl<'tcx> TypeFoldable<'tcx> for Ty<'tcx> {
fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(&self, folder: &mut F) -> Self {
let sty = match self.sty {
ty::TyBox(typ) => ty::TyBox(typ.fold_with(folder)),
ty::TyRawPtr(tm) => ty::TyRawPtr(tm.fold_with(folder)),
ty::TyArray(typ, sz) => ty::TyArray(typ.fold_with(folder), sz),
ty::TySlice(typ) => ty::TySlice(typ.fold_with(folder)),
@ -506,7 +505,6 @@ impl<'tcx> TypeFoldable<'tcx> for Ty<'tcx> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool {
match self.sty {
ty::TyBox(typ) => typ.visit_with(visitor),
ty::TyRawPtr(ref tm) => tm.visit_with(visitor),
ty::TyArray(typ, _sz) => typ.visit_with(visitor),
ty::TySlice(typ) => typ.visit_with(visitor),

25
src/librustc/ty/sty.rs
View File

@ -115,12 +115,6 @@ pub enum TypeVariants<'tcx> {
/// definition and not a concrete use of it.
TyAdt(&'tcx AdtDef, &'tcx Substs<'tcx>),
/// `Box<T>`; this is nominally a struct in the documentation, but is
/// special-cased internally. For example, it is possible to implicitly
/// move the contents of a box out of that box, and methods of any type
/// can have type `Box<Self>`.
TyBox(Ty<'tcx>),
/// The pointee of a string slice. Written as `str`.
TyStr,
@ -1139,10 +1133,18 @@ impl<'a, 'gcx, 'tcx> TyS<'tcx> {
}
}
pub fn is_unique(&self) -> bool {
pub fn is_box(&self) -> bool {
match self.sty {
TyBox(_) => true,
_ => false
TyAdt(def, _) => def.is_box(),
_ => false,
}
}
pub fn boxed_ty(&self) -> Ty<'tcx> {
match self.sty {
TyAdt(def, substs) if def.is_box() =>
substs.types().next().expect("Box<T> doesn't have type parameters"),
_ => bug!("`boxed_ty` is called on non-box type {:?}", self),
}
}
@ -1247,9 +1249,9 @@ impl<'a, 'gcx, 'tcx> TyS<'tcx> {
-> Option<TypeAndMut<'tcx>>
{
match self.sty {
TyBox(ty) => {
TyAdt(def, _) if def.is_box() => {
Some(TypeAndMut {
ty: ty,
ty: self.boxed_ty(),
mutbl: if pref == ty::PreferMutLvalue {
hir::MutMutable
} else {
@ -1349,7 +1351,6 @@ impl<'a, 'gcx, 'tcx> TyS<'tcx> {
TyInt(_) |
TyUint(_) |
TyFloat(_) |
TyBox(_) |
TyStr |
TyArray(..) |
TySlice(_) |

5
src/librustc/ty/util.rs
View File

@ -481,7 +481,6 @@ impl<'a, 'gcx, 'tcx, W> TypeVisitor<'tcx> for TypeIdHasher<'a, 'gcx, 'tcx, W>
TyBool |
TyChar |
TyStr |
TyBox(_) |
TySlice(_) => {}
TyError |
@ -563,7 +562,7 @@ impl<'a, 'tcx> ty::TyS<'tcx> {
mutbl: hir::MutImmutable, ..
}) => Some(false),
TyStr | TyBox(..) | TyRef(_, TypeAndMut {
TyStr | TyRef(_, TypeAndMut {
mutbl: hir::MutMutable, ..
}) => Some(true),
@ -606,7 +605,7 @@ impl<'a, 'tcx> ty::TyS<'tcx> {
// Fast-path for primitive types
let result = match self.sty {
TyBool | TyChar | TyInt(..) | TyUint(..) | TyFloat(..) |
TyBox(..) | TyRawPtr(..) | TyRef(..) | TyFnDef(..) | TyFnPtr(_) |
TyRawPtr(..) | TyRef(..) | TyFnDef(..) | TyFnPtr(_) |
TyArray(..) | TyTuple(..) | TyClosure(..) | TyNever => Some(true),
TyStr | TyDynamic(..) | TySlice(_) => Some(false),

2
src/librustc/ty/walk.rs
View File

@ -83,7 +83,7 @@ fn push_subtypes<'tcx>(stack: &mut TypeWalkerStack<'tcx>, parent_ty: Ty<'tcx>) {
ty::TyBool | ty::TyChar | ty::TyInt(_) | ty::TyUint(_) | ty::TyFloat(_) |
ty::TyStr | ty::TyInfer(_) | ty::TyParam(_) | ty::TyNever | ty::TyError => {
}
ty::TyBox(ty) | ty::TyArray(ty, _) | ty::TySlice(ty) => {
ty::TyArray(ty, _) | ty::TySlice(ty) => {
stack.push(ty);
}
ty::TyRawPtr(ref mt) | ty::TyRef(_, ref mt) => {

1
src/librustc/ty/wf.rs
View File

@ -323,7 +323,6 @@ impl<'a, 'gcx, 'tcx> WfPredicates<'a, 'gcx, 'tcx> {
}
}
ty::TyBox(_) |
ty::TyRawPtr(_) => {
// simple cases that are WF if their type args are WF
}

3
src/librustc/util/ppaux.rs
View File

@ -16,7 +16,7 @@ use ty::{TyBool, TyChar, TyAdt};
use ty::{TyError, TyStr, TyArray, TySlice, TyFloat, TyFnDef, TyFnPtr};
use ty::{TyParam, TyRawPtr, TyRef, TyNever, TyTuple};
use ty::{TyClosure, TyProjection, TyAnon};
use ty::{TyBox, TyDynamic, TyInt, TyUint, TyInfer};
use ty::{TyDynamic, TyInt, TyUint, TyInfer};
use ty::{self, Ty, TyCtxt, TypeFoldable};
use std::cell::Cell;
@ -708,7 +708,6 @@ impl<'tcx> fmt::Display for ty::TypeVariants<'tcx> {
TyInt(t) => write!(f, "{}", t.ty_to_string()),
TyUint(t) => write!(f, "{}", t.ty_to_string()),
TyFloat(t) => write!(f, "{}", t.ty_to_string()),
TyBox(typ) => write!(f, "Box<{}>", typ),
TyRawPtr(ref tm) => {
write!(f, "*{} {}", match tm.mutbl {
hir::MutMutable => "mut",

10
src/librustc_borrowck/borrowck/mir/elaborate_drops.rs
View File

@ -709,9 +709,6 @@ impl<'b, 'tcx> ElaborateDropsCtxt<'b, 'tcx> {
fn open_drop<'a>(&mut self, c: &DropCtxt<'a, 'tcx>) -> BasicBlock {
let ty = c.lvalue.ty(self.mir, self.tcx).to_ty(self.tcx);
match ty.sty {
ty::TyAdt(def, substs) => {
self.open_drop_for_adt(c, def, substs)
}
ty::TyClosure(def_id, substs) => {
let tys : Vec<_> = substs.upvar_tys(def_id, self.tcx).collect();
self.open_drop_for_tuple(c, &tys)
@ -719,8 +716,11 @@ impl<'b, 'tcx> ElaborateDropsCtxt<'b, 'tcx> {
ty::TyTuple(tys) => {
self.open_drop_for_tuple(c, tys)
}
ty::TyBox(ty) => {
self.open_drop_for_box(c, ty)
ty::TyAdt(def, _) if def.is_box() => {
self.open_drop_for_box(c, ty.boxed_ty())
}
ty::TyAdt(def, substs) => {
self.open_drop_for_adt(c, def, substs)
}
_ => bug!("open drop from non-ADT `{:?}`", ty)
}

2
src/librustc_const_eval/_match.rs
View File

@ -722,7 +722,6 @@ fn constructor_arity(_cx: &MatchCheckCtxt, ctor: &Constructor, ty: Ty) -> usize
debug!("constructor_arity({:?}, {:?})", ctor, ty);
match ty.sty {
ty::TyTuple(ref fs) => fs.len(),
ty::TyBox(_) => 1,
ty::TySlice(..) | ty::TyArray(..) => match *ctor {
Slice(length) => length,
ConstantValue(_) => 0,
@ -747,7 +746,6 @@ fn constructor_sub_pattern_tys<'a, 'tcx: 'a>(cx: &MatchCheckCtxt<'a, 'tcx>,
debug!("constructor_sub_pattern_tys({:?}, {:?})", ctor, ty);
match ty.sty {
ty::TyTuple(ref fs) => fs.into_iter().map(|t| *t).collect(),
ty::TyBox(ty) => vec![ty],
ty::TySlice(ty) | ty::TyArray(ty, _) => match *ctor {
Slice(length) => repeat(ty).take(length).collect(),
ConstantValue(_) => vec![],

2
src/librustc_const_eval/pattern.rs
View File

@ -215,7 +215,7 @@ impl<'tcx> fmt::Display for Pattern<'tcx> {
}
PatternKind::Deref { ref subpattern } => {
match self.ty.sty {
ty::TyBox(_) => write!(f, "box ")?,
ty::TyAdt(def, _) if def.is_box() => write!(f, "box ")?,
ty::TyRef(_, mt) => {
write!(f, "&")?;
if mt.mutbl == hir::MutMutable {

11
src/librustc_driver/test.rs
View File

@ -805,10 +805,9 @@ fn walk_ty() {
let uint_ty = tcx.types.usize;
let tup1_ty = tcx.intern_tup(&[int_ty, uint_ty, int_ty, uint_ty]);
let tup2_ty = tcx.intern_tup(&[tup1_ty, tup1_ty, uint_ty]);
let uniq_ty = tcx.mk_box(tup2_ty);
let walked: Vec<_> = uniq_ty.walk().collect();
let walked: Vec<_> = tup2_ty.walk().collect();
assert_eq!(walked,
[uniq_ty, tup2_ty, tup1_ty, int_ty, uint_ty, int_ty, uint_ty, tup1_ty, int_ty,
[tup2_ty, tup1_ty, int_ty, uint_ty, int_ty, uint_ty, tup1_ty, int_ty,
uint_ty, int_ty, uint_ty, uint_ty]);
})
}
@ -821,12 +820,10 @@ fn walk_ty_skip_subtree() {
let uint_ty = tcx.types.usize;
let tup1_ty = tcx.intern_tup(&[int_ty, uint_ty, int_ty, uint_ty]);
let tup2_ty = tcx.intern_tup(&[tup1_ty, tup1_ty, uint_ty]);
let uniq_ty = tcx.mk_box(tup2_ty);
// types we expect to see (in order), plus a boolean saying
// whether to skip the subtree.
let mut expected = vec![(uniq_ty, false),
(tup2_ty, false),
let mut expected = vec![(tup2_ty, false),
(tup1_ty, false),
(int_ty, false),
(uint_ty, false),
@ -836,7 +833,7 @@ fn walk_ty_skip_subtree() {
(uint_ty, false)];
expected.reverse();
let mut walker = uniq_ty.walk();
let mut walker = tup2_ty.walk();
while let Some(t) = walker.next() {
debug!("walked to {:?}", t);
let (expected_ty, skip) = expected.pop().unwrap();

2
src/librustc_lint/builtin.rs
View File

@ -95,7 +95,7 @@ pub struct BoxPointers;
impl BoxPointers {
fn check_heap_type<'a, 'tcx>(&self, cx: &LateContext, span: Span, ty: Ty) {
for leaf_ty in ty.walk() {
if let ty::TyBox(_) = leaf_ty.sty {
if leaf_ty.is_box() {
let m = format!("type uses owned (Box type) pointers: {}", ty);
cx.span_lint(BOX_POINTERS, span, &m);
}

5
src/librustc_lint/types.rs
View File

@ -519,11 +519,6 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
// Primitive types with a stable representation.
ty::TyBool | ty::TyInt(..) | ty::TyUint(..) | ty::TyFloat(..) | ty::TyNever => FfiSafe,
ty::TyBox(..) => {
FfiUnsafe("found Rust type Box<_> in foreign module, \
consider using a raw pointer instead")
}
ty::TySlice(_) => {
FfiUnsafe("found Rust slice type in foreign module, \
consider using a raw pointer instead")

2
src/librustc_mir/transform/qualify_consts.rs
View File

@ -350,7 +350,7 @@ impl<'a, 'tcx> Qualifier<'a, 'tcx, 'tcx> {
base: Lvalue::Local(index),
elem: ProjectionElem::Deref
}) if self.mir.local_kind(index) == LocalKind::Temp
&& self.mir.local_decls[index].ty.is_unique()
&& self.mir.local_decls[index].ty.is_box()
&& self.temp_qualif[index].map_or(false, |qualif| {
qualif.intersects(Qualif::NOT_CONST)
}) => {

5
src/librustc_mir/transform/type_check.rs
View File

@ -580,9 +580,10 @@ impl<'a, 'gcx, 'tcx> TypeChecker<'a, 'gcx, 'tcx> {
return;
}
let arg_ty = match args[0].ty(mir, self.tcx()).sty {
let ty = args[0].ty(mir, self.tcx());
let arg_ty = match ty.sty {
ty::TyRawPtr(mt) => mt.ty,
ty::TyBox(ty) => ty,
ty::TyAdt(def, _) if def.is_box() => ty.boxed_ty(),
_ => {
span_mirbug!(self, term, "box_free called with bad arg ty");
return;

14
src/librustc_trans/abi.rs
View File

@ -429,7 +429,7 @@ impl FnType {
if !type_is_fat_ptr(ccx, ret_ty) {
// The `noalias` attribute on the return value is useful to a
// function ptr caller.
if let ty::TyBox(_) = ret_ty.sty {
if ret_ty.is_box() {
// `Box` pointer return values never alias because ownership
// is transferred
ret.attrs.set(ArgAttribute::NoAlias);
@ -438,12 +438,16 @@ impl FnType {
// We can also mark the return value as `dereferenceable` in certain cases
match ret_ty.sty {
// These are not really pointers but pairs, (pointer, len)
ty::TyRef(_, ty::TypeAndMut { ty, .. }) |
ty::TyBox(ty) => {
ty::TyRef(_, ty::TypeAndMut { ty, .. }) => {
let llty = type_of::sizing_type_of(ccx, ty);
let llsz = llsize_of_alloc(ccx, llty);
ret.attrs.set_dereferenceable(llsz);
}
ty::TyAdt(def, _) if def.is_box() => {
let llty = type_of::sizing_type_of(ccx, ret_ty.boxed_ty());
let llsz = llsize_of_alloc(ccx, llty);
ret.attrs.set_dereferenceable(llsz);
}
_ => {}
}
}
@ -453,9 +457,9 @@ impl FnType {
// Handle safe Rust thin and fat pointers.
let rust_ptr_attrs = |ty: Ty<'tcx>, arg: &mut ArgType| match ty.sty {
// `Box` pointer parameters never alias because ownership is transferred
ty::TyBox(inner) => {
ty::TyAdt(def, _) if def.is_box() => {
arg.attrs.set(ArgAttribute::NoAlias);
Some(inner)
Some(ty.boxed_ty())
}
ty::TyRef(b, mt) => {

46
src/librustc_trans/base.rs
View File

@ -227,7 +227,6 @@ pub fn unsize_thin_ptr<'a, 'tcx>(
) -> (ValueRef, ValueRef) {
debug!("unsize_thin_ptr: {:?} => {:?}", src_ty, dst_ty);
match (&src_ty.sty, &dst_ty.sty) {
(&ty::TyBox(a), &ty::TyBox(b)) |
(&ty::TyRef(_, ty::TypeAndMut { ty: a, .. }),
&ty::TyRef(_, ty::TypeAndMut { ty: b, .. })) |
(&ty::TyRef(_, ty::TypeAndMut { ty: a, .. }),
@ -238,6 +237,12 @@ pub fn unsize_thin_ptr<'a, 'tcx>(
let ptr_ty = type_of::in_memory_type_of(bcx.ccx, b).ptr_to();
(bcx.pointercast(src, ptr_ty), unsized_info(bcx.ccx, a, b, None))
}
(&ty::TyAdt(def_a, _), &ty::TyAdt(def_b, _)) if def_a.is_box() && def_b.is_box() => {
let (a, b) = (src_ty.boxed_ty(), dst_ty.boxed_ty());
assert!(bcx.ccx.shared().type_is_sized(a));
let ptr_ty = type_of::in_memory_type_of(bcx.ccx, b).ptr_to();
(bcx.pointercast(src, ptr_ty), unsized_info(bcx.ccx, a, b, None))
}
_ => bug!("unsize_thin_ptr: called on bad types"),
}
}
@ -249,25 +254,30 @@ pub fn coerce_unsized_into<'a, 'tcx>(bcx: &Builder<'a, 'tcx>,
src_ty: Ty<'tcx>,
dst: ValueRef,
dst_ty: Ty<'tcx>) {
let coerce_ptr = || {
let (base, info) = if common::type_is_fat_ptr(bcx.ccx, src_ty) {
// fat-ptr to fat-ptr unsize preserves the vtable
// i.e. &'a fmt::Debug+Send => &'a fmt::Debug
// So we need to pointercast the base to ensure
// the types match up.
let (base, info) = load_fat_ptr(bcx, src, src_ty);
let llcast_ty = type_of::fat_ptr_base_ty(bcx.ccx, dst_ty);
let base = bcx.pointercast(base, llcast_ty);
(base, info)
} else {
let base = load_ty(bcx, src, src_ty);
unsize_thin_ptr(bcx, base, src_ty, dst_ty)
};
store_fat_ptr(bcx, base, info, dst, dst_ty);
};
match (&src_ty.sty, &dst_ty.sty) {
(&ty::TyBox(..), &ty::TyBox(..)) |
(&ty::TyRef(..), &ty::TyRef(..)) |
(&ty::TyRef(..), &ty::TyRawPtr(..)) |
(&ty::TyRawPtr(..), &ty::TyRawPtr(..)) => {
let (base, info) = if common::type_is_fat_ptr(bcx.ccx, src_ty) {
// fat-ptr to fat-ptr unsize preserves the vtable
// i.e. &'a fmt::Debug+Send => &'a fmt::Debug
// So we need to pointercast the base to ensure
// the types match up.
let (base, info) = load_fat_ptr(bcx, src, src_ty);
let llcast_ty = type_of::fat_ptr_base_ty(bcx.ccx, dst_ty);
let base = bcx.pointercast(base, llcast_ty);
(base, info)
} else {
let base = load_ty(bcx, src, src_ty);
unsize_thin_ptr(bcx, base, src_ty, dst_ty)
};
store_fat_ptr(bcx, base, info, dst, dst_ty);
coerce_ptr()
}
(&ty::TyAdt(def_a, _), &ty::TyAdt(def_b, _)) if def_a.is_box() && def_b.is_box() => {
coerce_ptr()
}
(&ty::TyAdt(def_a, substs_a), &ty::TyAdt(def_b, substs_b)) => {
@ -414,7 +424,7 @@ pub fn load_ty<'a, 'tcx>(b: &Builder<'a, 'tcx>, ptr: ValueRef, t: Ty<'tcx>) -> V
// a char is a Unicode codepoint, and so takes values from 0
// to 0x10FFFF inclusive only.
b.load_range_assert(ptr, 0, 0x10FFFF + 1, llvm::False)
} else if (t.is_region_ptr() || t.is_unique()) && !common::type_is_fat_ptr(ccx, t) {
} else if (t.is_region_ptr() || t.is_box()) && !common::type_is_fat_ptr(ccx, t) {
b.load_nonnull(ptr)
} else {
b.load(ptr)
@ -449,7 +459,7 @@ pub fn load_fat_ptr<'a, 'tcx>(
b: &Builder<'a, 'tcx>, src: ValueRef, t: Ty<'tcx>
) -> (ValueRef, ValueRef) {
let ptr = get_dataptr(b, src);
let ptr = if t.is_region_ptr() || t.is_unique() {
let ptr = if t.is_region_ptr() || t.is_box() {
b.load_nonnull(ptr)
} else {
b.load(ptr)

35
src/librustc_trans/collector.rs
View File

@ -721,14 +721,13 @@ fn find_drop_glue_neighbors<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
debug!("find_drop_glue_neighbors: {}", type_to_string(scx.tcx(), ty));
// Make sure the BoxFreeFn lang-item gets translated if there is a boxed value.
if let ty::TyBox(content_type) = ty.sty {
if ty.is_box() {
let def_id = scx.tcx().require_lang_item(BoxFreeFnLangItem);
if should_trans_locally(scx.tcx(), def_id) {
let box_free_fn_trans_item =
create_fn_trans_item(scx,
def_id,
scx.tcx().mk_substs(iter::once(Kind::from(content_type))),
scx.tcx().mk_substs(iter::once(Kind::from(ty.boxed_ty()))),
scx.tcx().intern_substs(&[]));
output.push(box_free_fn_trans_item);
}
@ -790,8 +789,14 @@ fn find_drop_glue_neighbors<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
ty::TyDynamic(..) => {
/* nothing to do */
}
ty::TyAdt(adt_def, substs) => {
for field in adt_def.all_fields() {
ty::TyAdt(def, _) if def.is_box() => {
let inner_type = glue::get_drop_glue_type(scx, ty.boxed_ty());
if scx.type_needs_drop(inner_type) {
output.push(TransItem::DropGlue(DropGlueKind::Ty(inner_type)));
}
}
ty::TyAdt(def, substs) => {
for field in def.all_fields() {
let field_type = scx.tcx().item_type(field.did);
let field_type = monomorphize::apply_param_substs(scx,
substs,
@ -811,7 +816,6 @@ fn find_drop_glue_neighbors<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
}
}
}
ty::TyBox(inner_type) |
ty::TySlice(inner_type) |
ty::TyArray(inner_type, _) => {
let inner_type = glue::get_drop_glue_type(scx, inner_type);
@ -1008,21 +1012,24 @@ fn find_vtable_types_for_unsizing<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>,
source_ty: ty::Ty<'tcx>,
target_ty: ty::Ty<'tcx>)
-> (ty::Ty<'tcx>, ty::Ty<'tcx>) {
let ptr_vtable = |inner_source: ty::Ty<'tcx>, inner_target: ty::Ty<'tcx>| {
if !scx.type_is_sized(inner_source) {
(inner_source, inner_target)
} else {
scx.tcx().struct_lockstep_tails(inner_source, inner_target)
}
};
match (&source_ty.sty, &target_ty.sty) {
(&ty::TyBox(a), &ty::TyBox(b)) |
(&ty::TyRef(_, ty::TypeAndMut { ty: a, .. }),
&ty::TyRef(_, ty::TypeAndMut { ty: b, .. })) |
(&ty::TyRef(_, ty::TypeAndMut { ty: a, .. }),
&ty::TyRawPtr(ty::TypeAndMut { ty: b, .. })) |
(&ty::TyRawPtr(ty::TypeAndMut { ty: a, .. }),
&ty::TyRawPtr(ty::TypeAndMut { ty: b, .. })) => {
let (inner_source, inner_target) = (a, b);
if !scx.type_is_sized(inner_source) {
(inner_source, inner_target)
} else {
scx.tcx().struct_lockstep_tails(inner_source, inner_target)
}
ptr_vtable(a, b)
}
(&ty::TyAdt(def_a, _), &ty::TyAdt(def_b, _)) if def_a.is_box() && def_b.is_box() => {
ptr_vtable(source_ty.boxed_ty(), target_ty.boxed_ty())
}
(&ty::TyAdt(source_adt_def, source_substs),

64
src/librustc_trans/debuginfo/metadata.rs
View File

@ -490,6 +490,35 @@ pub fn type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
debug!("type_metadata: {:?}", t);
let sty = &t.sty;
let ptr_metadata = |ty: Ty<'tcx>| {
match ty.sty {
ty::TySlice(typ) => {
Ok(vec_slice_metadata(cx, t, typ, unique_type_id, usage_site_span))
}
ty::TyStr => {
Ok(vec_slice_metadata(cx, t, cx.tcx().types.u8, unique_type_id, usage_site_span))
}
ty::TyDynamic(..) => {
Ok(MetadataCreationResult::new(
trait_pointer_metadata(cx, ty, Some(t), unique_type_id),
false))
}
_ => {
let pointee_metadata = type_metadata(cx, ty, usage_site_span);
match debug_context(cx).type_map
.borrow()
.find_metadata_for_unique_id(unique_type_id) {
Some(metadata) => return Err(metadata),
None => { /* proceed normally */ }
};
Ok(MetadataCreationResult::new(pointer_type_metadata(cx, t, pointee_metadata),
false))
}
}
};
let MetadataCreationResult { metadata, already_stored_in_typemap } = match *sty {
ty::TyNever |
ty::TyBool |
@ -516,34 +545,17 @@ pub fn type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
trait_pointer_metadata(cx, t, None, unique_type_id),
false)
}
ty::TyBox(ty) |
ty::TyRawPtr(ty::TypeAndMut{ty, ..}) |
ty::TyRef(_, ty::TypeAndMut{ty, ..}) => {
match ty.sty {
ty::TySlice(typ) => {
vec_slice_metadata(cx, t, typ, unique_type_id, usage_site_span)
}
ty::TyStr => {
vec_slice_metadata(cx, t, cx.tcx().types.u8, unique_type_id, usage_site_span)
}
ty::TyDynamic(..) => {
MetadataCreationResult::new(
trait_pointer_metadata(cx, ty, Some(t), unique_type_id),
false)
}
_ => {
let pointee_metadata = type_metadata(cx, ty, usage_site_span);
match debug_context(cx).type_map
.borrow()
.find_metadata_for_unique_id(unique_type_id) {
Some(metadata) => return metadata,
None => { /* proceed normally */ }
};
MetadataCreationResult::new(pointer_type_metadata(cx, t, pointee_metadata),
false)
}
match ptr_metadata(ty) {
Ok(res) => res,
Err(metadata) => return metadata,
}
}
ty::TyAdt(def, _) if def.is_box() => {
match ptr_metadata(t.boxed_ty()) {
Ok(res) => res,
Err(metadata) => return metadata,
}
}
ty::TyFnDef(.., ref barefnty) | ty::TyFnPtr(ref barefnty) => {

5
src/librustc_trans/debuginfo/type_names.rs
View File

@ -60,11 +60,6 @@ pub fn push_debuginfo_type_name<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
}
output.push(')');
},
ty::TyBox(inner_type) => {
output.push_str("Box<");
push_debuginfo_type_name(cx, inner_type, true, output);
output.push('>');
},
ty::TyRawPtr(ty::TypeAndMut { ty: inner_type, mutbl } ) => {
output.push('*');
match mutbl {

32
src/librustc_trans/glue.rs
View File

@ -79,16 +79,21 @@ pub fn get_drop_glue_type<'a, 'tcx>(scx: &SharedCrateContext<'a, 'tcx>, t: Ty<'t
return scx.tcx().types.i8;
}
match t.sty {
ty::TyBox(typ) if !scx.type_needs_drop(typ) && scx.type_is_sized(typ) => {
scx.tcx().infer_ctxt((), traits::Reveal::All).enter(|infcx| {
let layout = t.layout(&infcx).unwrap();
if layout.size(&scx.tcx().data_layout).bytes() == 0 {
// `Box<ZeroSizeType>` does not allocate.
scx.tcx().types.i8
} else {
t
}
})
ty::TyAdt(def, _) if def.is_box() => {
let typ = t.boxed_ty();
if !scx.type_needs_drop(typ) && scx.type_is_sized(typ) {
scx.tcx().infer_ctxt((), traits::Reveal::All).enter(|infcx| {
let layout = t.layout(&infcx).unwrap();
if layout.size(&scx.tcx().data_layout).bytes() == 0 {
// `Box<ZeroSizeType>` does not allocate.
scx.tcx().types.i8
} else {
t
}
})
} else {
t
}
}
_ => t
}
@ -205,11 +210,12 @@ pub fn implement_drop_glue<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, g: DropGlueKi
};
let bcx = match t.sty {
ty::TyBox(content_ty) => {
// Support for TyBox is built-in and its drop glue is
ty::TyAdt(def, _) if def.is_box() => {
// Support for Box is built-in and its drop glue is
// special. It may move to library and have Drop impl. As
// a safe-guard, assert TyBox not used with TyContents.
// a safe-guard, assert Box not used with TyContents.
assert!(!skip_dtor);
let content_ty = t.boxed_ty();
let ptr = if !bcx.ccx.shared().type_is_sized(content_ty) {
let llbox = bcx.load(get_dataptr(&bcx, ptr.llval));
let info = bcx.load(get_meta(&bcx, ptr.llval));

2
src/librustc_trans/mir/analyze.rs
View File

@ -30,7 +30,7 @@ pub fn lvalue_locals<'a, 'tcx>(mircx: &MirContext<'a, 'tcx>) -> BitVector {
let ty = mircx.monomorphize(&ty);
debug!("local {} has type {:?}", index, ty);
if ty.is_scalar() ||
ty.is_unique() ||
ty.is_box() ||
ty.is_region_ptr() ||
ty.is_simd() ||
common::type_is_zero_size(mircx.ccx, ty)

5
src/librustc_trans/trans_item.rs
View File

@ -421,11 +421,6 @@ impl<'a, 'tcx> DefPathBasedNames<'a, 'tcx> {
}
output.push(')');
},
ty::TyBox(inner_type) => {
output.push_str("Box<");
self.push_type_name(inner_type, output);
output.push('>');
},
ty::TyRawPtr(ty::TypeAndMut { ty: inner_type, mutbl } ) => {
output.push('*');
match mutbl {

57
src/librustc_trans/type_of.rs
View File

@ -38,6 +38,13 @@ pub fn sizing_type_of<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>, t: Ty<'tcx>) -> Typ
debug!("sizing_type_of {:?}", t);
let _recursion_lock = cx.enter_type_of(t);
let ptr_sizing_ty = |ty: Ty<'tcx>| {
if cx.shared().type_is_sized(ty) {
Type::i8p(cx)
} else {
Type::struct_(cx, &[Type::i8p(cx), unsized_info_ty(cx, ty)], false)
}
};
let llsizingty = match t.sty {
_ if !cx.shared().type_is_sized(t) => {
Type::struct_(cx, &[Type::i8p(cx), unsized_info_ty(cx, t)], false)
@ -50,14 +57,12 @@ pub fn sizing_type_of<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>, t: Ty<'tcx>) -> Typ
ty::TyFloat(t) => Type::float_from_ty(cx, t),
ty::TyNever => Type::nil(cx),
ty::TyBox(ty) |
ty::TyRef(_, ty::TypeAndMut{ty, ..}) |
ty::TyRawPtr(ty::TypeAndMut{ty, ..}) => {
if cx.shared().type_is_sized(ty) {
Type::i8p(cx)
} else {
Type::struct_(cx, &[Type::i8p(cx), unsized_info_ty(cx, ty)], false)
}
ptr_sizing_ty(ty)
}
ty::TyAdt(def, _) if def.is_box() => {
ptr_sizing_ty(t.boxed_ty())
}
ty::TyFnDef(..) => Type::nil(cx),
@ -131,11 +136,13 @@ pub fn sizing_type_of<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>, t: Ty<'tcx>) -> Typ
pub fn fat_ptr_base_ty<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, ty: Ty<'tcx>) -> Type {
match ty.sty {
ty::TyBox(t) |
ty::TyRef(_, ty::TypeAndMut { ty: t, .. }) |
ty::TyRawPtr(ty::TypeAndMut { ty: t, .. }) if !ccx.shared().type_is_sized(t) => {
in_memory_type_of(ccx, t).ptr_to()
}
ty::TyAdt(def, _) if def.is_box() => {
in_memory_type_of(ccx, ty.boxed_ty()).ptr_to()
}
_ => bug!("expected fat ptr ty but got {:?}", ty)
}
}
@ -214,6 +221,22 @@ pub fn in_memory_type_of<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>, t: Ty<'tcx>) ->
return llty;
}
let ptr_ty = |ty: Ty<'tcx>| {
if !cx.shared().type_is_sized(ty) {
if let ty::TyStr = ty.sty {
// This means we get a nicer name in the output (str is always
// unsized).
cx.str_slice_type()
} else {
let ptr_ty = in_memory_type_of(cx, ty).ptr_to();
let info_ty = unsized_info_ty(cx, ty);
Type::struct_(cx, &[ptr_ty, info_ty], false)
}
} else {
in_memory_type_of(cx, ty).ptr_to()
}
};
let mut llty = match t.sty {
ty::TyBool => Type::bool(cx),
ty::TyChar => Type::char(cx),
@ -227,22 +250,12 @@ pub fn in_memory_type_of<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>, t: Ty<'tcx>) ->
adt::incomplete_type_of(cx, t, "closure")
}
ty::TyBox(ty) |
ty::TyRef(_, ty::TypeAndMut{ty, ..}) |
ty::TyRawPtr(ty::TypeAndMut{ty, ..}) => {
if !cx.shared().type_is_sized(ty) {
if let ty::TyStr = ty.sty {
// This means we get a nicer name in the output (str is always
// unsized).
cx.str_slice_type()
} else {
let ptr_ty = in_memory_type_of(cx, ty).ptr_to();
let info_ty = unsized_info_ty(cx, ty);
Type::struct_(cx, &[ptr_ty, info_ty], false)
}
} else {
in_memory_type_of(cx, ty).ptr_to()
}
ptr_ty(ty)
}
ty::TyAdt(def, _) if def.is_box() => {
ptr_ty(t.boxed_ty())
}
ty::TyArray(ty, size) => {
@ -300,7 +313,7 @@ pub fn in_memory_type_of<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>, t: Ty<'tcx>) ->
// If this was an enum or struct, fill in the type now.
match t.sty {
ty::TyAdt(..) | ty::TyClosure(..) if !t.is_simd() => {
ty::TyAdt(..) | ty::TyClosure(..) if !t.is_simd() && !t.is_box() => {
adt::finish_type_of(cx, t, &mut llty);
}
_ => ()

15
src/librustc_typeck/astconv.rs
View File

@ -670,16 +670,7 @@ impl<'o, 'gcx: 'tcx, 'tcx> AstConv<'gcx, 'tcx>+'o {
}
};
let substs = self.ast_path_substs_for_ty(span,
did,
item_segment);
// FIXME(#12938): This is a hack until we have full support for DST.
if Some(did) == self.tcx().lang_items.owned_box() {
assert_eq!(substs.types().count(), 1);
return self.tcx().mk_box(substs.type_at(0));
}
let substs = self.ast_path_substs_for_ty(span, did, item_segment);
decl_ty.subst(self.tcx(), substs)
}
@ -1674,7 +1665,7 @@ impl<'tcx> ExplicitSelf<'tcx> {
fn count_modifiers(ty: Ty) -> usize {
match ty.sty {
ty::TyRef(_, mt) => count_modifiers(mt.ty) + 1,
ty::TyBox(t) => count_modifiers(t) + 1,
ty::TyAdt(def, _) if def.is_box() => count_modifiers(ty.boxed_ty()) + 1,
_ => 0,
}
}
@ -1687,7 +1678,7 @@ impl<'tcx> ExplicitSelf<'tcx> {
} else {
match self_arg_ty.sty {
ty::TyRef(r, mt) => ExplicitSelf::ByReference(r, mt.mutbl),
ty::TyBox(_) => ExplicitSelf::ByBox,
ty::TyAdt(def, _) if def.is_box() => ExplicitSelf::ByBox,
_ => ExplicitSelf::ByValue,
}
}

2
src/librustc_typeck/check/cast.rs
View File

@ -288,7 +288,7 @@ impl<'a, 'gcx, 'tcx> CastCheck<'tcx> {
tstr);
}
}
ty::TyBox(..) => {
ty::TyAdt(def, ..) if def.is_box() => {
match fcx.tcx.sess.codemap().span_to_snippet(self.cast_span) {
Ok(s) => {
err.span_suggestion(self.cast_span,

2
src/librustc_typeck/check/dropck.rs
View File

@ -448,7 +448,7 @@ fn iterate_over_potentially_unsafe_regions_in_type<'a, 'b, 'gcx, 'tcx>(
Ok(())
}
ty::TyBox(ity) | ty::TyArray(ity, _) | ty::TySlice(ity) => {
ty::TyArray(ity, _) | ty::TySlice(ity) => {
// single-element containers, behave like their element
iterate_over_potentially_unsafe_regions_in_type(
cx, context, ity, depth+1)

5
src/librustc_typeck/check/method/probe.rs
View File

@ -391,11 +391,6 @@ impl<'a, 'gcx, 'tcx> ProbeContext<'a, 'gcx, 'tcx> {
ty::TyAdt(def, _) => {
self.assemble_inherent_impl_candidates_for_type(def.did);
}
ty::TyBox(_) => {
if let Some(box_did) = self.tcx.lang_items.owned_box() {
self.assemble_inherent_impl_candidates_for_type(box_did);
}
}
ty::TyParam(p) => {
self.assemble_inherent_candidates_from_param(self_ty, p);
}

3
src/librustc_typeck/check/mod.rs
View File

@ -3438,7 +3438,8 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
hir::ExprBox(ref subexpr) => {
let expected_inner = expected.to_option(self).map_or(NoExpectation, |ty| {
match ty.sty {
ty::TyBox(ty) => Expectation::rvalue_hint(self, ty),
ty::TyAdt(def, _) if def.is_box()
=> Expectation::rvalue_hint(self, ty.boxed_ty()),
_ => NoExpectation
}
});

6
src/librustc_typeck/check/regionck.rs
View File

@ -815,9 +815,9 @@ impl<'a, 'gcx, 'tcx> RegionCtxt<'a, 'gcx, 'tcx> {
self.type_must_outlive(infer::RelateObjectBound(cast_expr.span), from_ty, r);
}
/*From:*/ (&ty::TyBox(from_referent_ty),
/*To: */ &ty::TyBox(to_referent_ty)) => {
self.walk_cast(cast_expr, from_referent_ty, to_referent_ty);
/*From:*/ (&ty::TyAdt(from_def, _),
/*To: */ &ty::TyAdt(to_def, _)) if from_def.is_box() && to_def.is_box() => {
self.walk_cast(cast_expr, from_ty.boxed_ty(), to_ty.boxed_ty());
}
_ => { }

2
src/librustc_typeck/coherence/builtin.rs
View File

@ -220,8 +220,6 @@ fn visit_implementation_of_coerce_unsized<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
(mt_a.ty, mt_b.ty, unsize_trait, None)
};
let (source, target, trait_def_id, kind) = match (&source.sty, &target.sty) {
(&ty::TyBox(a), &ty::TyBox(b)) => (a, b, unsize_trait, None),
(&ty::TyRef(r_a, mt_a), &ty::TyRef(r_b, mt_b)) => {
infcx.sub_regions(infer::RelateObjectBound(span), r_b, r_a);
check_mutbl(mt_a, mt_b, &|ty| tcx.mk_imm_ref(r_b, ty))

4
src/librustc_typeck/coherence/mod.rs
View File

@ -21,7 +21,7 @@ use rustc::ty::{Ty, TyBool, TyChar, TyError};
use rustc::ty::{TyParam, TyRawPtr};
use rustc::ty::{TyRef, TyAdt, TyDynamic, TyNever, TyTuple};
use rustc::ty::{TyStr, TyArray, TySlice, TyFloat, TyInfer, TyInt};
use rustc::ty::{TyUint, TyClosure, TyBox, TyFnDef, TyFnPtr};
use rustc::ty::{TyUint, TyClosure, TyFnDef, TyFnPtr};
use rustc::ty::{TyProjection, TyAnon};
use CrateCtxt;
use syntax_pos::Span;
@ -61,8 +61,6 @@ impl<'a, 'tcx> CoherenceChecker<'a, 'tcx> {
TyDynamic(ref t, ..) => t.principal().map(|p| p.def_id()),
TyBox(_) => self.tcx.lang_items.owned_box(),
TyBool | TyChar | TyInt(..) | TyUint(..) | TyFloat(..) | TyStr | TyArray(..) |
TySlice(..) | TyFnDef(..) | TyFnPtr(_) | TyTuple(..) | TyParam(..) | TyError |
TyNever | TyRawPtr(_) | TyRef(..) | TyProjection(..) => None,

7
src/librustc_typeck/coherence/orphan.rs
View File

@ -91,12 +91,6 @@ impl<'cx, 'tcx, 'v> ItemLikeVisitor<'v> for OrphanChecker<'cx, 'tcx> {
ty::TyDynamic(ref data, ..) if data.principal().is_some() => {
self.check_def_id(item, data.principal().unwrap().def_id());
}
ty::TyBox(..) => {
match self.tcx.lang_items.require_owned_box() {
Ok(trait_id) => self.check_def_id(item, trait_id),
Err(msg) => self.tcx.sess.span_fatal(item.span, &msg),
}
}
ty::TyChar => {
self.check_primitive_impl(def_id,
self.tcx.lang_items.char_impl(),
@ -321,7 +315,6 @@ impl<'cx, 'tcx, 'v> ItemLikeVisitor<'v> for OrphanChecker<'cx, 'tcx> {
let self_ty = trait_ref.self_ty();
let opt_self_def_id = match self_ty.sty {
ty::TyAdt(self_def, _) => Some(self_def.did),
ty::TyBox(..) => self.tcx.lang_items.owned_box(),
_ => None,
};

1
src/librustc_typeck/variance/constraints.rs
View File

@ -329,7 +329,6 @@ impl<'a, 'tcx> ConstraintContext<'a, 'tcx> {
self.add_constraints_from_mt(generics, mt, variance);
}
ty::TyBox(typ) |
ty::TyArray(typ, _) |
ty::TySlice(typ) => {
self.add_constraints_from_ty(generics, typ, variance);

31
src/librustdoc/clean/mod.rs
View File

@ -1808,10 +1808,6 @@ impl<'tcx> Clean<Type> for ty::Ty<'tcx> {
ty::TyUint(uint_ty) => Primitive(uint_ty.into()),
ty::TyFloat(float_ty) => Primitive(float_ty.into()),
ty::TyStr => Primitive(PrimitiveType::Str),
ty::TyBox(t) => {
let box_did = cx.tcx.lang_items.owned_box();
lang_struct(cx, box_did, t, "Box", Unique)
}
ty::TySlice(ty) => Vector(box ty.clean(cx)),
ty::TyArray(ty, i) => FixedVector(box ty.clean(cx),
format!("{}", i)),
@ -2888,33 +2884,6 @@ impl Clean<Deprecation> for attr::Deprecation {
}
}
fn lang_struct(cx: &DocContext, did: Option<DefId>,
t: ty::Ty, name: &str,
fallback: fn(Box<Type>) -> Type) -> Type {
let did = match did {
Some(did) => did,
None => return fallback(box t.clean(cx)),
};
inline::record_extern_fqn(cx, did, TypeKind::Struct);
ResolvedPath {
typarams: None,
did: did,
path: Path {
global: false,
def: Def::Err,
segments: vec![PathSegment {
name: name.to_string(),
params: PathParameters::AngleBracketed {
lifetimes: vec![],
types: vec![t.clean(cx)],
bindings: vec![]
}
}],
},
is_generic: false,
}
}
/// An equality constraint on an associated type, e.g. `A=Bar` in `Foo<A=Bar>`
#[derive(Clone, PartialEq, RustcDecodable, RustcEncodable, Debug)]
pub struct TypeBinding {

5
src/test/compile-fail/autoderef-full-lval.rs
View File

@ -22,13 +22,14 @@ struct fish {
fn main() {
let a: clam = clam{x: box 1, y: box 2};
let b: clam = clam{x: box 10, y: box 20};
let z: isize = a.x + b.y; //~ ERROR binary operation `+` cannot be applied to type `Box<isize>`
let z: isize = a.x + b.y;
//~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>`
println!("{}", z);
assert_eq!(z, 21);
let forty: fish = fish{a: box 40};
let two: fish = fish{a: box 2};
let answer: isize = forty.a + two.a;
//~^ ERROR binary operation `+` cannot be applied to type `Box<isize>`
//~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>`
println!("{}", answer);
assert_eq!(answer, 42);
}

12
src/test/compile-fail/borrowck/borrowck-box-insensitivity.rs
View File

@ -35,7 +35,7 @@ fn copy_after_move() {
let _x = a.x;
//~^ value moved here
let _y = a.y; //~ ERROR use of moved
//~^ move occurs because `a.x` has type `Box<isize>`
//~^ move occurs because `a.x` has type `std::boxed::Box<isize>`
//~| value used here after move
}
@ -44,7 +44,7 @@ fn move_after_move() {
let _x = a.x;
//~^ value moved here
let _y = a.y; //~ ERROR use of moved
//~^ move occurs because `a.x` has type `Box<isize>`
//~^ move occurs because `a.x` has type `std::boxed::Box<isize>`
//~| value used here after move
}
@ -53,7 +53,7 @@ fn borrow_after_move() {
let _x = a.x;
//~^ value moved here
let _y = &a.y; //~ ERROR use of moved
//~^ move occurs because `a.x` has type `Box<isize>`
//~^ move occurs because `a.x` has type `std::boxed::Box<isize>`
//~| value used here after move
}
@ -106,7 +106,7 @@ fn copy_after_move_nested() {
let _x = a.x.x;
//~^ value moved here
let _y = a.y; //~ ERROR use of collaterally moved
//~^ NOTE move occurs because `a.x.x` has type `Box<isize>`
//~^ NOTE move occurs because `a.x.x` has type `std::boxed::Box<isize>`
//~| value used here after move
}
@ -115,7 +115,7 @@ fn move_after_move_nested() {
let _x = a.x.x;
//~^ value moved here
let _y = a.y; //~ ERROR use of collaterally moved
//~^ NOTE move occurs because `a.x.x` has type `Box<isize>`
//~^ NOTE move occurs because `a.x.x` has type `std::boxed::Box<isize>`
//~| value used here after move
}
@ -124,7 +124,7 @@ fn borrow_after_move_nested() {
let _x = a.x.x;
//~^ value moved here
let _y = &a.y; //~ ERROR use of collaterally moved
//~^ NOTE move occurs because `a.x.x` has type `Box<isize>`
//~^ NOTE move occurs because `a.x.x` has type `std::boxed::Box<isize>`
//~| value used here after move
}

3
src/test/compile-fail/cross-borrow-trait.rs
View File

@ -20,6 +20,5 @@ pub fn main() {
let x: Box<Trait> = Box::new(Foo);
let _y: &Trait = x; //~ ERROR mismatched types
//~| expected type `&Trait`
//~| found type `Box<Trait>`
//~| expected &Trait, found box
//~| found type `std::boxed::Box<Trait>`
}

3
src/test/compile-fail/destructure-trait-ref.rs
View File

@ -51,6 +51,5 @@ fn main() {
let box box x = box 1isize as Box<T>;
//~^ ERROR mismatched types
//~| expected type `T`
//~| found type `Box<_>`
//~| expected trait T, found box
//~| found type `std::boxed::Box<_>`
}

9
src/test/compile-fail/fn-trait-formatting.rs
View File

@ -16,18 +16,15 @@ fn main() {
let _: () = (box |_: isize| {}) as Box<FnOnce(isize)>;
//~^ ERROR mismatched types
//~| expected type `()`
//~| found type `Box<std::ops::FnOnce(isize)>`
//~| expected (), found box
//~| found type `std::boxed::Box<std::ops::FnOnce(isize)>`
let _: () = (box |_: isize, isize| {}) as Box<Fn(isize, isize)>;
//~^ ERROR mismatched types
//~| expected type `()`
//~| found type `Box<std::ops::Fn(isize, isize)>`
//~| expected (), found box
//~| found type `std::boxed::Box<std::ops::Fn(isize, isize)>`
let _: () = (box || -> isize { unimplemented!() }) as Box<FnMut() -> isize>;
//~^ ERROR mismatched types
//~| expected type `()`
//~| found type `Box<std::ops::FnMut() -> isize>`
//~| expected (), found box
//~| found type `std::boxed::Box<std::ops::FnMut() -> isize>`
needs_fn(1);
//~^ ERROR : std::ops::Fn<(isize,)>`

3
src/test/compile-fail/issue-14915.rs
View File

@ -13,5 +13,6 @@
fn main() {
let x: Box<isize> = box 0;
println!("{}", x + 1); //~ ERROR binary operation `+` cannot be applied to type `Box<isize>`
println!("{}", x + 1);
//~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>`
}

4
src/test/compile-fail/issue-17441.rs
View File

@ -13,9 +13,9 @@ fn main() {
//~^ ERROR cast to unsized type: `&[usize; 2]` as `[usize]`
//~^^ HELP consider using an implicit coercion to `&[usize]` instead
// FIXME (#22405): Replace `Box::new` with `box` here when/if possible.
// FIXME (#22405): Replace `std::boxed::Box::new` with `box` here when/if possible.
let _bar = Box::new(1_usize) as std::fmt::Debug;
//~^ ERROR cast to unsized type: `Box<usize>` as `std::fmt::Debug`
//~^ ERROR cast to unsized type: `std::boxed::Box<usize>` as `std::fmt::Debug`
//~^^ HELP try casting to a `Box` instead
let _baz = 1_usize as std::fmt::Debug;

3
src/test/compile-fail/issue-5100.rs
View File

@ -43,8 +43,7 @@ fn main() {
box (true, false) => ()
//~^ ERROR mismatched types
//~| expected type `(bool, bool)`
//~| found type `Box<_>`
//~| expected tuple, found box
//~| found type `std::boxed::Box<_>`
}
match (true, false) {

3
src/test/compile-fail/issue-7061.rs
View File

@ -13,9 +13,8 @@ struct BarStruct;
impl<'a> BarStruct {
fn foo(&'a mut self) -> Box<BarStruct> { self }
//~^ ERROR mismatched types
//~| expected type `Box<BarStruct>`
//~| expected type `std::boxed::Box<BarStruct>`
//~| found type `&'a mut BarStruct`
//~| expected box, found mutable reference
}
fn main() {}

2
src/test/compile-fail/kindck-impl-type-params-2.rs
View File

@ -21,5 +21,5 @@ fn take_param<T:Foo>(foo: &T) { }
fn main() {
let x: Box<_> = box 3;
take_param(&x);
//~^ ERROR `Box<{integer}>: std::marker::Copy` is not satisfied
//~^ ERROR `std::boxed::Box<{integer}>: std::marker::Copy` is not satisfied
}

4
src/test/compile-fail/lint-ctypes.rs
View File

@ -34,7 +34,7 @@ extern {
pub fn ptr_type2(size: *const Foo); //~ ERROR: found struct without
pub fn slice_type(p: &[u32]); //~ ERROR: found Rust slice type
pub fn str_type(p: &str); //~ ERROR: found Rust type
pub fn box_type(p: Box<u32>); //~ ERROR found Rust type
pub fn box_type(p: Box<u32>); //~ ERROR found struct without
pub fn char_type(p: char); //~ ERROR found Rust type
pub fn trait_type(p: &Clone); //~ ERROR found Rust trait type
pub fn tuple_type(p: (i32, i32)); //~ ERROR found Rust tuple type
@ -42,7 +42,7 @@ extern {
pub fn zero_size(p: ZeroSize); //~ ERROR found zero-size struct
pub fn fn_type(p: RustFn); //~ ERROR found function pointer with Rust
pub fn fn_type2(p: fn()); //~ ERROR found function pointer with Rust
pub fn fn_contained(p: RustBadRet); //~ ERROR: found Rust type
pub fn fn_contained(p: RustBadRet); //~ ERROR: found struct without
pub fn good1(size: *const libc::c_int);
pub fn good2(size: *const libc::c_uint);

2
src/test/compile-fail/map-types.rs
View File

@ -26,5 +26,5 @@ fn main() {
let x: Box<Map<isize, isize>> = x;
// FIXME (#22405): Replace `Box::new` with `box` here when/if possible.
let y: Box<Map<usize, isize>> = Box::new(x);
//~^ ERROR `Box<Map<isize, isize>>: Map<usize, isize>` is not satisfied
//~^ ERROR `std::boxed::Box<Map<isize, isize>>: Map<usize, isize>` is not satisfied
}

2
src/test/compile-fail/object-does-not-impl-trait.rs
View File

@ -14,5 +14,5 @@
trait Foo {}
fn take_foo<F:Foo>(f: F) {}
fn take_object(f: Box<Foo>) { take_foo(f); }
//~^ ERROR `Box<Foo>: Foo` is not satisfied
//~^ ERROR `std::boxed::Box<Foo>: Foo` is not satisfied
fn main() {}

2
src/test/compile-fail/occurs-check-2.rs
View File

@ -17,6 +17,6 @@ fn main() {
f = box g;
//~^ ERROR mismatched types
//~| expected type `_`
//~| found type `Box<_>`
//~| found type `std::boxed::Box<_>`
//~| cyclic type of infinite size
}

2
src/test/compile-fail/occurs-check.rs
View File

@ -15,6 +15,6 @@ fn main() {
f = box f;
//~^ ERROR mismatched types
//~| expected type `_`
//~| found type `Box<_>`
//~| found type `std::boxed::Box<_>`
//~| cyclic type of infinite size
}

4
src/test/compile-fail/regions-infer-paramd-indirect.rs
View File

@ -32,8 +32,8 @@ impl<'a> set_f<'a> for c<'a> {
fn set_f_bad(&mut self, b: Box<b>) {
self.f = b;
//~^ ERROR mismatched types
//~| expected type `Box<Box<&'a isize>>`
//~| found type `Box<Box<&isize>>`
//~| expected type `std::boxed::Box<std::boxed::Box<&'a isize>>`
//~| found type `std::boxed::Box<std::boxed::Box<&isize>>`
//~| lifetime mismatch
}
}

3
src/test/compile-fail/terr-sorts.rs
View File

@ -20,8 +20,7 @@ fn want_foo(f: foo) {}
fn have_bar(b: bar) {
want_foo(b); //~ ERROR mismatched types
//~| expected type `foo`
//~| found type `Box<foo>`
//~| expected struct `foo`, found box
//~| found type `std::boxed::Box<foo>`
}
fn main() {}

5
src/test/compile-fail/trivial_casts.rs
View File

@ -52,7 +52,8 @@ pub fn main() {
let _: *mut [u32] = x;
let x: Box<[u32; 3]> = Box::new([42, 43, 44]);
let _ = x as Box<[u32]>; //~ERROR trivial cast: `Box<[u32; 3]>` as `Box<[u32]>`
let _ = x as Box<[u32]>;
//~^ ERROR trivial cast: `std::boxed::Box<[u32; 3]>` as `std::boxed::Box<[u32]>`
let x: Box<[u32; 3]> = Box::new([42, 43, 44]);
let _: Box<[u32]> = x;
@ -70,7 +71,7 @@ pub fn main() {
let _: *mut Foo = x;
let x: Box<Bar> = Box::new(Bar);
let _ = x as Box<Foo>; //~ERROR trivial cast: `Box<Bar>` as `Box<Foo>`
let _ = x as Box<Foo>; //~ERROR trivial cast: `std::boxed::Box<Bar>` as `std::boxed::Box<Foo>`
let x: Box<Bar> = Box::new(Bar);
let _: Box<Foo> = x;

4
src/test/compile-fail/type-mismatch-same-crate-name.rs
View File

@ -33,7 +33,7 @@ fn main() {
//~^ ERROR mismatched types
//~| Perhaps two different versions of crate `crate_a1`
//~| expected trait `main::a::Bar`
//~| expected type `Box<main::a::Bar + 'static>`
//~| found type `Box<main::a::Bar>`
//~| expected type `std::boxed::Box<main::a::Bar + 'static>`
//~| found type `std::boxed::Box<main::a::Bar>`
}
}

12
src/test/debuginfo/type-names.rs
View File

@ -70,12 +70,12 @@
// BOX
// gdb-command:whatis box1
// gdbg-check:type = struct (Box<f32>, i32)
// gdbr-check:type = (Box<f32>, i32)
// gdbg-check:type = struct (alloc::boxed::Box<f32>, i32)
// gdbr-check:type = (alloc::boxed::Box<f32>, i32)
// gdb-command:whatis box2
// gdbg-check:type = struct (Box<type_names::mod1::mod2::Enum3<f32>>, i32)
// gdbr-check:type = (Box<type_names::mod1::mod2::Enum3<f32>>, i32)
// gdbg-check:type = struct (alloc::boxed::Box<type_names::mod1::mod2::Enum3<f32>>, i32)
// gdbr-check:type = (alloc::boxed::Box<type_names::mod1::mod2::Enum3<f32>>, i32)
// REFERENCES
@ -196,8 +196,8 @@
// gdbr-check:type = (unsafe fn(type_names::GenericStruct<u16, u8>) -> type_names::mod1::Struct2, usize)
// gdb-command:whatis extern_stdcall_fn_with_return_value
// gdbg-check:type = struct (extern "stdcall" fn(Box<isize>) -> usize, usize)
// gdbr-check:type = (extern "stdcall" fn(Box<isize>) -> usize, usize)
// gdbg-check:type = struct (extern "stdcall" fn(alloc::boxed::Box<isize>) -> usize, usize)
// gdbr-check:type = (extern "stdcall" fn(alloc::boxed::Box<isize>) -> usize, usize)
// gdb-command:whatis generic_function_int
// gdbg-check:type = struct (fn(isize) -> isize, usize)

2
src/test/run-pass/auxiliary/issue13507.rs
View File

@ -58,7 +58,7 @@ pub mod testtypes {
// Tests TySlice
pub type FooSlice = [u8];
// Tests TyBox (of u8)
// Tests Box (of u8)
pub type FooBox = Box<u8>;
// Tests TyRawPtr

4
src/test/ui/mismatched_types/trait-bounds-cant-coerce.stderr
View File

@ -4,8 +4,8 @@ error[E0308]: mismatched types
24 | a(x); //~ ERROR mismatched types [E0308]
| ^ expected trait `Foo + std::marker::Send`, found trait `Foo`
|
= note: expected type `Box<Foo + std::marker::Send + 'static>`
found type `Box<Foo + 'static>`
= note: expected type `std::boxed::Box<Foo + std::marker::Send + 'static>`
found type `std::boxed::Box<Foo + 'static>`
error: aborting due to previous error

2
src/test/ui/span/coerce-suggestions.stderr
View File

@ -49,7 +49,7 @@ error[E0308]: mismatched types
| ^^^^^ cyclic type of infinite size
|
= note: expected type `_`
found type `Box<_>`
found type `std::boxed::Box<_>`
error: aborting due to 5 previous errors