mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 08:13:41 +00:00
27 lines
776 B
Rust
27 lines
776 B
Rust
// Test implicit coercions involving DSTs and raw pointers.
|
|
|
|
struct S;
|
|
trait T {}
|
|
impl T for S {}
|
|
|
|
struct Foo<T: ?Sized> {
|
|
f: T
|
|
}
|
|
|
|
pub fn main() {
|
|
// Test that we cannot convert from *-ptr to &S and &T
|
|
let x: *const S = &S;
|
|
let y: &S = x; //~ ERROR mismatched types
|
|
let y: &dyn T = x; //~ ERROR mismatched types
|
|
|
|
// Test that we cannot convert from *-ptr to &S and &T (mut version)
|
|
let x: *mut S = &mut S;
|
|
let y: &S = x; //~ ERROR mismatched types
|
|
let y: &dyn T = x; //~ ERROR mismatched types
|
|
|
|
// Test that we cannot convert an immutable ptr to a mutable one using *-ptrs
|
|
let x: &mut dyn T = &S; //~ ERROR mismatched types
|
|
let x: *mut dyn T = &S; //~ ERROR mismatched types
|
|
let x: *mut S = &S; //~ ERROR mismatched types
|
|
}
|