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//@ edition: 2018
// tests that the pointee type of a raw pointer must be known to call methods on it
// see also: `tests/ui/editions/edition-raw-pointer-method-2018.rs`
fn main() {
let val = 1_u32;
let ptr = &val as *const u32;
unsafe {
let _a: i32 = (ptr as *const _).read();
//~^ ERROR type annotations needed
let b = ptr as *const _;
//~^ ERROR type annotations needed
let _b: u8 = b.read();
let _c = (ptr as *const u8).read(); // we know the type here
}
let mut val = 2_u32;
let ptr = &mut val as *mut u32;
unsafe {
let _a: i32 = (ptr as *mut _).read();
//~^ ERROR type annotations needed
let b = ptr as *mut _;
//~^ ERROR type annotations needed
b.write(10);
(ptr as *mut i32).write(1000); // we know the type here
}
}
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