E0156,
E0157,
E0158,
- E0159
+ E0159,
+ E0160
)
this.emit_enum_variant_arg(0, |this| Ok(this.emit_unsize_kind(ecx, uk)))
})
}
- &ty::AutoUnsafe(m) => {
- this.emit_enum_variant("AutoUnsafe", 3, 1, |this| {
- this.emit_enum_variant_arg(0, |this| m.encode(this))
+ &ty::AutoUnsafe(m, None) => {
+ this.emit_enum_variant("AutoUnsafe", 3, 2, |this| {
+ this.emit_enum_variant_arg(0, |this| m.encode(this));
+ this.emit_enum_variant_arg(1,
+ |this| this.emit_option(|this| this.emit_option_none()))
+ })
+ }
+ &ty::AutoUnsafe(m, Some(box ref a)) => {
+ this.emit_enum_variant("AutoUnsafe", 3, 2, |this| {
+ this.emit_enum_variant_arg(0, |this| m.encode(this));
+ this.emit_enum_variant_arg(1, |this| this.emit_option(
+ |this| this.emit_option_some(|this| Ok(this.emit_autoref(ecx, a)))))
})
}
}
3 => {
let m: ast::Mutability =
this.read_enum_variant_arg(0, |this| Decodable::decode(this)).unwrap();
+ let a: Option<Box<ty::AutoRef>> =
+ this.read_enum_variant_arg(1, |this| this.read_option(|this, b| {
+ if b {
+ Ok(Some(box this.read_autoref(xcx)))
+ } else {
+ Ok(None)
+ }
+ })).unwrap();
- ty::AutoUnsafe(m)
+ ty::AutoUnsafe(m, a)
}
_ => fail!("bad enum variant for ty::AutoRef")
})
ty::BorrowKind::from_mutbl(m),
AutoRef);
}
- ty::AutoUnsizeUniq(_) | ty::AutoUnsize(_) | ty::AutoUnsafe(_) => {}
+ ty::AutoUnsizeUniq(_) | ty::AutoUnsize(_) | ty::AutoUnsafe(..) => {}
}
}
for (i, &ty) in self.tys.iter().enumerate() {
match ty::get(ty).sty {
- // &T/&mut T could either be a thin or fat pointer depending on T
- ty::ty_rptr(_, ty::mt { ty, .. }) => match ty::get(ty).sty {
+ // &T/&mut T/*T could either be a thin or fat pointer depending on T
+ ty::ty_rptr(_, ty::mt { ty, .. })
+ | ty::ty_ptr(ty::mt { ty, .. }) => match ty::get(ty).sty {
// &[T] and &str are a pointer and length pair
ty::ty_vec(_, None) | ty::ty_str => return Some(FatPointer(i, slice_elt_base)),
match ty::get(t).sty {
ty::ty_nil => f(nil_type),
- ty::ty_bool | ty::ty_ptr(_) |
- ty::ty_uint(_) | ty::ty_char => f(unsigned_int),
+ ty::ty_bool | ty::ty_uint(_) | ty::ty_char => f(unsigned_int),
+ ty::ty_ptr(mt) if ty::type_is_sized(cx.tcx(), mt.ty) => f(unsigned_int),
ty::ty_int(_) => f(signed_int),
ty::ty_float(_) => f(floating_point),
// Should never get here, because t is scalar.
}
Some(ref autoref) => {
match *autoref {
- ty::AutoUnsafe(_) |
+ ty::AutoUnsafe(_, None) |
ty::AutoPtr(ty::ReStatic, _, None) => {
// Don't copy data to do a deref+ref
// (i.e., skip the last auto-deref).
let mut datum = datum;
let datum = match autoref {
- &AutoUnsafe(..) => {
- debug!(" AutoUnsafe");
- unpack_datum!(bcx, ref_ptr(bcx, expr, datum))
- }
- &AutoPtr(_, _, ref a) => {
+ &AutoPtr(_, _, ref a) | &AutoUnsafe(_, ref a) => {
debug!(" AutoPtr");
match a {
&Some(box ref a) => datum = unpack_datum!(bcx,
match ty::get(t).sty {
ty::ty_char => cast_integral,
ty::ty_float(..) => cast_float,
- ty::ty_ptr(..) => cast_pointer,
- ty::ty_rptr(_, mt) => {
+ ty::ty_rptr(_, mt) | ty::ty_ptr(mt) => {
if ty::type_is_sized(tcx, mt.ty) {
cast_pointer
} else {
// Unfortunately we can't do anything here because at runtime we
// pass around the value by pointer (*u8). But unsized pointers are
// fat and so we can't just cast them to *u8 and back. So we have
- // to work with the pointer directly (see ty_rptr/ty_uniq).
+ // to work with the pointer directly (see ty_ptr/ty_rptr/ty_uniq).
fail!("Can't reflect unsized type")
}
// FIXME(15049) Reflection for unsized structs.
self.visit("box", extra.as_slice())
}
ty::ty_ptr(ref mt) => {
- let extra = self.c_mt(mt);
- self.visit("ptr", extra.as_slice())
+ match ty::get(mt.ty).sty {
+ ty::ty_vec(ty, None) => {
+ let extra = self.c_mt(&ty::mt{ty: ty, mutbl: mt.mutbl});
+ self.visit("evec_slice", extra.as_slice())
+ }
+ ty::ty_str => self.visit("estr_slice", &[]),
+ ty::ty_trait(..) => {
+ let extra = [
+ self.c_slice(token::intern_and_get_ident(
+ ty_to_string(tcx, t).as_slice()))
+ ];
+ self.visit("trait", extra);
+ }
+ _ => {
+ let extra = self.c_mt(mt);
+ self.visit("ptr", extra.as_slice())
+ }
+ }
}
ty::ty_uniq(typ) => {
match ty::get(typ).sty {
ty::ty_uint(t) => Type::uint_from_ty(cx, t),
ty::ty_float(t) => Type::float_from_ty(cx, t),
- ty::ty_box(..) |
- ty::ty_ptr(..) => Type::i8p(cx),
- ty::ty_uniq(ty) | ty::ty_rptr(_, ty::mt{ty, ..}) => {
+ ty::ty_box(..) => Type::i8p(cx),
+ ty::ty_uniq(ty) | ty::ty_rptr(_, ty::mt{ty, ..}) | ty::ty_ptr(ty::mt{ty, ..}) => {
if ty::type_is_sized(cx.tcx(), ty) {
Type::i8p(cx)
} else {
ty::ty_box(typ) => {
Type::at_box(cx, type_of(cx, typ)).ptr_to()
}
- ty::ty_ptr(ref mt) => type_of(cx, mt.ty).ptr_to(),
- ty::ty_uniq(ty) | ty::ty_rptr(_, ty::mt{ty, ..}) => {
+ ty::ty_uniq(ty) | ty::ty_rptr(_, ty::mt{ty, ..}) | ty::ty_ptr(ty::mt{ty, ..}) => {
match ty::get(ty).sty {
ty::ty_str => {
// This means we get a nicer name in the output (str is always
/// Convert from T to *T
/// Value to thin pointer
- AutoUnsafe(ast::Mutability),
+ /// The second field allows us to wrap other AutoRef adjustments.
+ AutoUnsafe(ast::Mutability, Option<Box<AutoRef>>),
}
// Ugly little helper function. The first bool in the returned tuple is true if
(b, u, Some(adj_r))
}
}
+ &AutoUnsafe(_, Some(box ref autoref)) => autoref_object_region(autoref),
_ => (false, false, None)
}
}
None => None
}
}
+ &AutoUnsafe(m, Some(box ref autoref)) => {
+ match type_of_autoref(cx, autoref) {
+ Some(t) => Some(mk_ptr(cx, mt {mutbl: m, ty: t})),
+ None => None
+ }
+ }
_ => None
}
}
fn type_is_slice(ty: t) -> bool {
match get(ty).sty {
- ty_rptr(_, mt) => match get(mt.ty).sty {
+ ty_ptr(mt) | ty_rptr(_, mt) => match get(mt.ty).sty {
ty_vec(_, None) | ty_str => true,
_ => false,
},
pub fn type_is_fat_ptr(cx: &ctxt, ty: t) -> bool {
match get(ty).sty {
- ty_rptr(_, mt{ty, ..}) | ty_uniq(ty) if !type_is_sized(cx, ty) => true,
+ ty_ptr(mt{ty, ..}) | ty_rptr(_, mt{ty, ..})
+ | ty_uniq(ty) if !type_is_sized(cx, ty) => true,
_ => false,
}
}
pub fn type_is_trait(ty: t) -> bool {
match get(ty).sty {
- ty_uniq(ty) | ty_rptr(_, mt { ty, ..}) => match get(ty).sty {
+ ty_uniq(ty) | ty_rptr(_, mt { ty, ..}) | ty_ptr(mt { ty, ..}) => match get(ty).sty {
ty_trait(..) => true,
_ => false
},
})
}
- AutoUnsafe(m) => {
- mk_ptr(cx, mt {ty: ty, mutbl: m})
+ AutoUnsafe(m, ref a) => {
+ let adjusted_ty = match a {
+ &Some(box ref a) => adjust_for_autoref(cx, span, ty, a),
+ &None => ty
+ };
+ mk_ptr(cx, mt {ty: adjusted_ty, mutbl: m})
}
AutoUnsize(ref k) => unsize_ty(cx, ty, k, span),
ty::AutoPtr(r, m, Some(ref a)) => ty::AutoPtr(f(r), m, Some(box a.map_region(f))),
ty::AutoUnsize(ref k) => ty::AutoUnsize(k.clone()),
ty::AutoUnsizeUniq(ref k) => ty::AutoUnsizeUniq(k.clone()),
- ty::AutoUnsafe(m) => ty::AutoUnsafe(m),
+ ty::AutoUnsafe(m, None) => ty::AutoUnsafe(m, None),
+ ty::AutoUnsafe(m, Some(ref a)) => ty::AutoUnsafe(m, Some(box a.map_region(f))),
}
}
}
ty::AutoPtr(r, m, Some(ref a)) => {
ty::AutoPtr(this.fold_region(r), m, Some(box super_fold_autoref(this, &**a)))
}
- ty::AutoUnsafe(m) => ty::AutoUnsafe(m),
+ ty::AutoUnsafe(m, None) => ty::AutoUnsafe(m, None),
+ ty::AutoUnsafe(m, Some(ref a)) => {
+ ty::AutoUnsafe(m, Some(box super_fold_autoref(this, &**a)))
+ }
ty::AutoUnsize(ref k) => ty::AutoUnsize(k.fold_with(this)),
ty::AutoUnsizeUniq(ref k) => ty::AutoUnsizeUniq(k.fold_with(this)),
}
ast::ExprAddrOf(mutbl, ref oprnd) => {
let expected = expected.only_has_type();
let hint = expected.map(fcx, |sty| {
- match *sty { ty::ty_rptr(_, ref mt) => ExpectHasType(mt.ty),
+ match *sty { ty::ty_rptr(_, ref mt) | ty::ty_ptr(ref mt) => ExpectHasType(mt.ty),
_ => NoExpectation }
});
let lvalue_pref = match mutbl {
ty::BorrowKind::from_mutbl(m), expr_cmt);
}
- ty::AutoUnsafe(_) | ty::AutoUnsizeUniq(_) | ty::AutoUnsize(_) => {}
+ ty::AutoUnsafe(..) | ty::AutoUnsizeUniq(_) | ty::AutoUnsize(_) => {}
}
}
let cx = fcx.ccx;
let check_object_cast = |src_ty: ty::t, target_ty: ty::t| {
+ debug!("check_object_cast {} to {}",
+ fcx.infcx().ty_to_string(src_ty),
+ fcx.infcx().ty_to_string(target_ty));
// Check that a cast is of correct types.
match (&ty::get(target_ty).sty, &ty::get(src_ty).sty) {
(&ty::ty_rptr(_, ty::mt{ty, mutbl}), &ty::ty_rptr(_, mt))
+ | (&ty::ty_ptr(ty::mt{ty, mutbl}), &ty::ty_rptr(_, mt))
if !mutability_allowed(mt.mutbl, mutbl) => {
match ty::get(ty).sty {
ty::ty_trait(..) => {
_ => {}
}
}
- (&ty::ty_uniq(..), &ty::ty_uniq(..) ) => {}
+ (&ty::ty_uniq(..), &ty::ty_uniq(..) )
+ | (&ty::ty_ptr(..), &ty::ty_ptr(..) )
+ | (&ty::ty_ptr(..), &ty::ty_rptr(..)) => {}
(&ty::ty_rptr(r_t, _), &ty::ty_rptr(r_s, _)) => {
infer::mk_subr(fcx.infcx(),
infer::RelateObjectBound(ex.span),
_ => {}
}
}
+ (&ty::ty_ptr(ty::mt{ty, ..}), _) => {
+ match ty::get(ty).sty {
+ ty::ty_trait(..) => {
+ span_err!(fcx.ccx.tcx.sess, ex.span, E0160,
+ "can only cast an *-pointer or &-pointer to an *-object, not a {}",
+ ty::ty_sort_string(fcx.tcx(), src_ty));
+ }
+ _ => {}
+ }
+ }
_ => {}
}
};
match autoref {
&ty::AutoUnsize(ref k) |
&ty::AutoUnsizeUniq(ref k) => trait_cast_types_unsize(fcx, k, src_ty, sp),
- &ty::AutoPtr(_, _, Some(box ref autoref)) => {
+ &ty::AutoPtr(_, _, Some(box ref autoref))
+ | &ty::AutoUnsafe(_, Some(box ref autoref))=> {
trait_cast_types_autoref(fcx, autoref, src_ty, sp)
}
_ => None
&ty::AutoDerefRef(AutoDerefRef{autoref: Some(ref autoref), autoderefs}) => {
let mut derefed_type = src_ty;
for _ in range(0, autoderefs) {
- derefed_type = ty::deref(derefed_type, false).unwrap().ty;
+ derefed_type = ty::deref(derefed_type, true).unwrap().ty;
derefed_type = structurally_resolved_type(fcx, sp, derefed_type)
}
trait_cast_types_autoref(fcx, autoref, derefed_type, sp)
ty_unboxed_closure(def_id, _) => {
Some(def_id)
}
- ty_rptr(_, ty::mt {ty, ..}) | ty_uniq(ty) => match ty::get(ty).sty {
+ ty_ptr(ty::mt {ty, ..}) | ty_rptr(_, ty::mt {ty, ..}) | ty_uniq(ty)
+ => match ty::get(ty).sty {
ty_trait(box ty::TyTrait { def_id, .. }) => {
Some(def_id)
}
ast::SelfExplicit(ref ast_type, _) => {
let typ = crate_context.to_ty(rs, &**ast_type);
let base_type = match ty::get(typ).sty {
- ty::ty_rptr(_, tm) => tm.ty,
+ ty::ty_ptr(tm) | ty::ty_rptr(_, tm) => tm.ty,
ty::ty_uniq(typ) => typ,
_ => typ,
};
*/
use middle::subst;
-use middle::ty::{AutoPtr, AutoDerefRef, AutoUnsize};
+use middle::ty::{AutoPtr, AutoDerefRef, AutoUnsize, AutoUnsafe};
use middle::ty::{mt};
use middle::ty;
use middle::typeck::infer::{CoerceResult, resolve_type, Coercion};
// to `&[T]`. Doing it all at once makes the target code a bit more
// efficient and spares us from having to handle multiple coercions.
match ty::get(b).sty {
- ty::ty_rptr(_, mt_b) => {
+ ty::ty_ptr(mt_b) | ty::ty_rptr(_, mt_b) => {
match ty::get(mt_b.ty).sty {
ty::ty_vec(_, None) => {
let unsize_and_ref = self.unpack_actual_value(a, |sty_a| {
// Note: does not attempt to resolve type variables we encounter.
// See above for details.
match ty::get(b).sty {
+ ty::ty_ptr(mt_b) => {
+ match ty::get(mt_b.ty).sty {
+ ty::ty_str => {
+ return self.unpack_actual_value(a, |sty_a| {
+ self.coerce_unsafe_ptr(a, sty_a, b, ast::MutImmutable)
+ });
+ }
+
+ ty::ty_trait(..) => {
+ let result = self.unpack_actual_value(a, |sty_a| {
+ self.coerce_unsafe_object(a, sty_a, b, mt_b.mutbl)
+ });
+
+ match result {
+ Ok(t) => return Ok(t),
+ Err(..) => {}
+ }
+ }
+
+ _ => {
+ return self.unpack_actual_value(a, |sty_a| {
+ self.coerce_unsafe_ptr(a, sty_a, b, mt_b.mutbl)
+ });
+ }
+ };
+ }
+
ty::ty_rptr(_, mt_b) => {
match ty::get(mt_b.ty).sty {
ty::ty_str => {
});
}
- ty::ty_ptr(mt_b) => {
- return self.unpack_actual_value(a, |sty_a| {
- self.coerce_unsafe_ptr(a, sty_a, b, mt_b)
- });
- }
-
_ => {}
}
}
})
}
+ (&ty::ty_ptr(ty::mt{ty: t_a, ..}), &ty::ty_ptr(mt_b))
+ | (&ty::ty_rptr(_, ty::mt{ty: t_a, ..}), &ty::ty_ptr(mt_b)) => {
+ self.unpack_actual_value(t_a, |sty_a| {
+ match self.unsize_ty(sty_a, mt_b.ty) {
+ Some((ty, kind)) => {
+ let ty = ty::mk_ptr(self.get_ref().infcx.tcx,
+ ty::mt{ty: ty, mutbl: mt_b.mutbl});
+ try!(self.get_ref().infcx.try(|| sub.tys(ty, b)));
+ debug!("Success, coerced with AutoDerefRef(1, \
+ AutoPtr(AutoUnsize({:?})))", kind);
+ Ok(Some(AutoDerefRef(AutoDerefRef {
+ autoderefs: 1,
+ autoref: Some(ty::AutoUnsafe(mt_b.mutbl,
+ Some(box AutoUnsize(kind))))
+ })))
+ }
+ _ => Err(ty::terr_mismatch)
+ }
+ })
+ }
(&ty::ty_uniq(t_a), &ty::ty_uniq(t_b)) => {
self.unpack_actual_value(t_a, |sty_a| {
match self.unsize_ty(sty_a, t_b) {
sty_a: &ty::sty,
ty_b: ty::t)
-> Option<(ty::t, ty::UnsizeKind)> {
- debug!("unsize_ty(sty_a={:?}", sty_a);
+ debug!("unsize_ty(sty_a={:?}, ty_b={})", sty_a, ty_b.repr(self.get_ref().infcx.tcx));
let tcx = self.get_ref().infcx.tcx;
b: ty::t,
b_mutbl: ast::Mutability) -> CoerceResult
{
+ let tcx = self.get_ref().infcx.tcx;
+
debug!("coerce_borrowed_object(a={}, sty_a={:?}, b={})",
- a.repr(self.get_ref().infcx.tcx), sty_a,
- b.repr(self.get_ref().infcx.tcx));
+ a.repr(tcx), sty_a,
+ b.repr(tcx));
- let tcx = self.get_ref().infcx.tcx;
let coercion = Coercion(self.get_ref().trace.clone());
- let r_a = self.get_ref().infcx.next_region_var(coercion);
- let a_borrowed = match *sty_a {
+ match *sty_a {
ty::ty_uniq(ty) | ty::ty_rptr(_, ty::mt{ty, ..}) => match ty::get(ty).sty {
ty::ty_trait(box ty::TyTrait {
def_id,
..
}) => {
let tr = ty::mk_trait(tcx, def_id, substs.clone(), bounds);
- ty::mk_rptr(tcx, r_a, ty::mt{ mutbl: b_mutbl, ty: tr })
+ let r_a = self.get_ref().infcx.next_region_var(coercion);
+ let a_borrowed = ty::mk_rptr(tcx, r_a, ty::mt{ mutbl: b_mutbl, ty: tr });
+
+ try!(self.subtype(a_borrowed, b));
+ Ok(Some(AutoDerefRef(AutoDerefRef {
+ autoderefs: 1,
+ autoref: Some(AutoPtr(r_a, b_mutbl, None))
+ })))
}
_ => {
- return self.subtype(a, b);
+ self.subtype(a, b)
}
},
_ => {
- return self.subtype(a, b);
+ self.subtype(a, b)
}
- };
+ }
+ }
- try!(self.subtype(a_borrowed, b));
- Ok(Some(AutoDerefRef(AutoDerefRef {
- autoderefs: 1,
- autoref: Some(AutoPtr(r_a, b_mutbl, None))
- })))
+ fn coerce_unsafe_object(&self,
+ a: ty::t,
+ sty_a: &ty::sty,
+ b: ty::t,
+ b_mutbl: ast::Mutability) -> CoerceResult
+ {
+ let tcx = self.get_ref().infcx.tcx;
+
+ debug!("coerce_unsafe_object(a={}, sty_a={:?}, b={})",
+ a.repr(tcx), sty_a,
+ b.repr(tcx));
+
+ match *sty_a {
+ ty::ty_uniq(ty) | ty::ty_rptr(_, ty::mt{ty, ..}) |
+ ty::ty_ptr(ty::mt{ty, ..}) => match ty::get(ty).sty {
+ ty::ty_trait(box ty::TyTrait {
+ def_id,
+ ref substs,
+ bounds,
+ ..
+ }) => {
+ let tr = ty::mk_trait(tcx, def_id, substs.clone(), bounds);
+ let a_raw = ty::mk_ptr(tcx, ty::mt{ mutbl: b_mutbl, ty: tr });
+
+ try!(self.subtype(a_raw, b));
+ Ok(Some(AutoDerefRef(AutoDerefRef {
+ autoderefs: 1,
+ autoref: Some(AutoUnsafe(b_mutbl, None))
+ })))
+ }
+ _ => {
+ self.subtype(a, b)
+ }
+ },
+ _ => {
+ self.subtype(a, b)
+ }
+ }
}
pub fn coerce_borrowed_fn(&self,
a: ty::t,
sty_a: &ty::sty,
b: ty::t,
- mt_b: ty::mt)
+ mutbl_b: ast::Mutability)
-> CoerceResult {
debug!("coerce_unsafe_ptr(a={}, sty_a={:?}, b={})",
a.repr(self.get_ref().infcx.tcx), sty_a,
}
};
- // check that the types which they point at are compatible
+ // Check that the types which they point at are compatible.
+ // Note that we don't adjust the mutability here. We cannot change
+ // the mutability and the kind of pointer in a single coercion.
let a_unsafe = ty::mk_ptr(self.get_ref().infcx.tcx, mt_a);
try!(self.subtype(a_unsafe, b));
- // although references and unsafe ptrs have the same
+ // Although references and unsafe ptrs have the same
// representation, we still register an AutoDerefRef so that
- // regionck knows that the region for `a` must be valid here
+ // regionck knows that the region for `a` must be valid here.
Ok(Some(AutoDerefRef(AutoDerefRef {
autoderefs: 1,
- autoref: Some(ty::AutoUnsafe(mt_b.mutbl))
+ autoref: Some(ty::AutoUnsafe(mutbl_b, None))
})))
}
}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+struct S;
+trait T {}
+impl T for S {}
+
+pub fn main() {
+ let x: *const S = &S;
+ let y: &S = x; //~ ERROR mismatched types: expected `&S`, found `*const S` (expected &-ptr
+ let y: &T = x; //~ ERROR mismatched types: expected `&T`, found `*const S` (expected &-ptr
+
+ let x: *mut S = &mut S;
+ let y: &S = x; //~ ERROR mismatched types: expected `&S`, found `*mut S` (expected &-ptr
+ let y: &T = x; //~ ERROR mismatched types: expected `&T`, found `*mut S` (expected &-ptr
+
+ let x: &mut T = &S; //~ ERROR types differ in mutability
+ let x: *mut T = &S; //~ ERROR types differ in mutability
+ let x: *mut S = &S;
+ //~^ ERROR mismatched types: expected `*mut S`, found `&S` (values differ in mutability)
+}
\ No newline at end of file
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+struct S;
+trait T {}
+impl T for S {}
+
+pub fn main() {
+ let x: &T = &S;
+ let x: *const T = &S;
+
+ let x: *const S = &S;
+
+ let x: &mut T = &mut S;
+ let x: *mut T = &mut S;
+
+ let x: *mut S = &mut S;
+
+ let x: &T = &mut S;
+ let x: *const T = &mut S;
+}
\ No newline at end of file
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test DST raw pointers
+
+trait Trait {
+ fn foo(&self) -> int;
+}
+
+struct A {
+ f: int
+}
+impl Trait for A {
+ fn foo(&self) -> int {
+ self.f
+ }
+}
+
+pub struct Foo<Sized? T> {
+ f: T
+}
+
+pub fn main() {
+ // raw trait object
+ let x = A { f: 42 };
+ let y: *const A = &x;
+ let z: *const Trait = y;
+ let r = unsafe {
+ (&*z).foo()
+ };
+ assert!(r == 42);
+
+ // raw DST struct
+ let p = Foo {f: A { f: 42 }};
+ let q: *const Foo<A> = &p;
+ let o: *const Foo<Trait> = q;
+ let r = unsafe {
+ (&*o).f.foo()
+ };
+ assert!(r == 42);
+
+ // raw slice
+ let a: *const [_] = &[1i, 2, 3];
+ unsafe {
+ let b = (*a)[2];
+ assert!(b == 3);
+ }
+
+ // raw DST struct with slice
+ let c: *const Foo<[_]> = &Foo {f: [1i, 2, 3]};
+ unsafe {
+ let b = (&*c).f[0];
+ assert!(b == 1);
+ }
+
+ // all of the above with *mut
+ let mut x = A { f: 42 };
+ let y: *mut A = &mut x;
+ let z: *mut Trait = y;
+ let r = unsafe {
+ (&*z).foo()
+ };
+ assert!(r == 42);
+
+ let mut p = Foo {f: A { f: 42 }};
+ let q: *mut Foo<A> = &mut p;
+ let o: *mut Foo<Trait> = q;
+ let r = unsafe {
+ (&*o).f.foo()
+ };
+ assert!(r == 42);
+
+ let a: *mut [_] = &mut [1i, 2, 3];
+ unsafe {
+ let b = (*a)[2];
+ assert!(b == 3);
+ }
+
+ let c: *mut Foo<[_]> = &mut Foo {f: [1i, 2, 3]};
+ unsafe {
+ let b = (&*c).f[0];
+ assert!(b == 1);
+ }
+}
\ No newline at end of file
projects / rust.git / commitdiff