//@ 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 a() { let ptr = &1u32 as *const u32; unsafe { let _a: i32 = (ptr as *const _).read(); //~^ ERROR type annotations needed } } fn b() { let ptr = &1u32 as *const u32; unsafe { let b = ptr as *const _; //~^ ERROR type annotations needed let _b: u8 = b.read(); } } fn c() { let ptr = &mut 2u32 as *mut u32; unsafe { let _c: i32 = (ptr as *mut _).read(); //~^ ERROR type annotations needed } } fn d() { let ptr = &mut 2u32 as *mut u32; unsafe { let d = ptr as *mut _; //~^ ERROR type annotations needed let _d: u8 = d.read(); } } fn main() {}