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//@aux-build:macro_rules.rs
#![warn(clippy::missing_transmute_annotations)]
#![allow(clippy::let_with_type_underscore)]
#[macro_use]
extern crate macro_rules;
macro_rules! local_bad_transmute {
($e:expr) => {
std::mem::transmute($e)
//~^ ERROR: transmute used without annotations
};
}
fn bar(x: i32) -> i32 {
x
}
unsafe fn foo1() -> i32 {
unsafe {
// Should not warn!
std::mem::transmute([1u16, 2u16])
}
}
// Should not warn!
const _: i32 = unsafe { std::mem::transmute([1u16, 2u16]) };
#[repr(i32)]
enum Foo {
A = 0,
}
unsafe fn foo2() -> i32 {
unsafe {
let mut i: i32 = 0;
i = std::mem::transmute([1u16, 2u16]);
//~^ ERROR: transmute used without annotations
i = std::mem::transmute::<_, _>([1u16, 2u16]);
//~^ ERROR: transmute used without annotations
i = std::mem::transmute::<_, i32>([1u16, 2u16]);
//~^ ERROR: transmute used without annotations
i = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]);
//~^ ERROR: transmute used without annotations
let x: i32 = bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16]));
//~^ ERROR: transmute used without annotations
bar(std::mem::transmute::<[u16; 2], _>([1u16, 2u16]));
//~^ ERROR: transmute used without annotations
i = local_bad_transmute!([1u16, 2u16]);
// Should not warn.
i = bad_transmute!([1u16, 2u16]);
i = std::mem::transmute([0i16, 0i16]);
//~^ ERROR: transmute used without annotations
i = std::mem::transmute(Foo::A);
//~^ ERROR: transmute used without annotations
i
}
}
fn main() {
let x: _ = unsafe { std::mem::transmute::<_, i32>([1u16, 2u16]) };
//~^ ERROR: transmute used without annotations
unsafe {
let x: _ = std::mem::transmute::<_, i32>([1u16, 2u16]);
//~^ ERROR: transmute used without annotations
// Should not warn.
std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]);
let x = std::mem::transmute::<[u16; 2], i32>([1u16, 2u16]);
let x: i32 = std::mem::transmute::<[u16; 2], _>([1u16, 2u16]);
let x: i32 = std::mem::transmute::<_, i32>([1u16, 2u16]);
let x: i32 = std::mem::transmute([1u16, 2u16]);
}
let x: i32 = unsafe { std::mem::transmute([1u16, 2u16]) };
}
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