rust/src/test/ui/ptr-coercion.rs

24 lines
1021 B
Rust

// Test coercions between pointers which don't do anything fancy like unsizing.
// These are testing that we don't lose mutability when converting to raw pointers.
pub fn main() {
// *const -> *mut
let x: *const isize = &42;
let x: *mut isize = x; //~ ERROR mismatched types
//~| expected raw pointer `*mut isize`
//~| found raw pointer `*const isize`
//~| types differ in mutability
// & -> *mut
let x: *mut isize = &42; //~ ERROR mismatched types
//~| expected raw pointer `*mut isize`
//~| found reference `&isize`
//~| types differ in mutability
let x: *const isize = &42;
let x: *mut isize = x; //~ ERROR mismatched types
//~| expected raw pointer `*mut isize`
//~| found raw pointer `*const isize`
//~| types differ in mutability
}