mirror of https://github.com/rust-lang/rust
45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
// Tests that `transmute` cannot be called on type parameters.
|
|
|
|
use std::mem::transmute;
|
|
|
|
unsafe fn f<T>(x: T) {
|
|
let _: i32 = transmute(x);
|
|
//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
|
|
}
|
|
|
|
unsafe fn g<T>(x: (T, i32)) {
|
|
let _: i32 = transmute(x);
|
|
//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
|
|
}
|
|
|
|
unsafe fn h<T>(x: [T; 10]) {
|
|
let _: i32 = transmute(x);
|
|
//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
|
|
}
|
|
|
|
struct Bad<T> {
|
|
f: T,
|
|
}
|
|
|
|
unsafe fn i<T>(x: Bad<T>) {
|
|
let _: i32 = transmute(x);
|
|
//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
|
|
}
|
|
|
|
enum Worse<T> {
|
|
A(T),
|
|
B,
|
|
}
|
|
|
|
unsafe fn j<T>(x: Worse<T>) {
|
|
let _: i32 = transmute(x);
|
|
//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
|
|
}
|
|
|
|
unsafe fn k<T>(x: Option<T>) {
|
|
let _: i32 = transmute(x);
|
|
//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
|
|
}
|
|
|
|
fn main() {}
|