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//@ revisions: current next
//@[next] compile-flags: -Znext-solver
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] check-pass
// Make sure we support non-call operations for opaque types even if
// its not part of its item bounds.
use std::ops::{Deref, DerefMut, Index, IndexMut};
fn mk<T>() -> T {
todo!()
}
fn add() -> impl Sized {
let unconstrained = if false {
add() + 1
//[current]~^ ERROR cannot add `{integer}` to `impl Sized
} else {
let with_infer = mk();
let _ = with_infer + 1;
with_infer
};
let _: u32 = unconstrained;
1u32
}
fn mul_assign() -> impl Sized {
if false {
let mut temp = mul_assign();
temp *= 2;
//[current]~^ ERROR binary assignment operation `*=` cannot be applied to type `impl Sized`
}
let mut with_infer = mk();
with_infer *= 2;
let _: u32 = with_infer;
1u32
}
struct DerefWrapper<T>(T);
impl<T: Deref> Deref for DerefWrapper<T> {
type Target = T::Target;
fn deref(&self) -> &Self::Target {
&*self.0
}
}
impl<T: DerefMut> DerefMut for DerefWrapper<T> {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut *self.0
}
}
fn explicit_deref() -> DerefWrapper<impl Sized> {
if false {
let _rarw = &*explicit_deref();
//[current]~^ ERROR type `DerefWrapper<impl Sized>` cannot be dereferenced
let mut with_infer = DerefWrapper(mk());
let _rarw = &*with_infer;
with_infer
} else {
DerefWrapper(&1u32)
}
}
fn explicit_deref_mut() -> DerefWrapper<impl Sized> {
if false {
*explicit_deref_mut() = 1;
//[current]~^ ERROR type `DerefWrapper<impl Sized>` cannot be dereferenced
let mut with_infer = DerefWrapper(Default::default());
*with_infer = 1;
with_infer
} else {
DerefWrapper(Box::new(1u32))
}
}
struct IndexWrapper<T>(T);
impl<T: Index<U>, U> Index<U> for IndexWrapper<T> {
type Output = T::Output;
fn index(&self, index: U) -> &Self::Output {
&self.0[index]
}
}
impl<T: IndexMut<U>, U> IndexMut<U> for IndexWrapper<T> {
fn index_mut(&mut self, index: U) -> &mut Self::Output {
&mut self.0[index]
}
}
fn explicit_index() -> IndexWrapper<impl Sized> {
if false {
let _y = explicit_index()[0];
//[current]~^ ERROR the type `impl Sized` cannot be indexed by `_`
let with_infer = IndexWrapper(Default::default());
let _y = with_infer[0];
with_infer
} else {
IndexWrapper([1u32])
}
}
fn explicit_index_mut() -> IndexWrapper<impl Sized> {
if false {
explicit_index_mut()[0] = 1;
//[current]~^ ERROR the type `impl Sized` cannot be indexed by `_`
let mut with_infer = IndexWrapper(Default::default());
with_infer[0] = 1;
with_infer
} else {
IndexWrapper([1u32])
}
}
fn main() {}
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