rust/tests/ui/const-generics/transmute-fail.rs

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2023-04-04 03:41:44 -05:00
#![feature(transmute_generic_consts)]
#![feature(generic_const_exprs)]
#![allow(incomplete_features)]
fn foo<const W: usize, const H: usize>(v: [[u32;H+1]; W]) -> [[u32; W+1]; H] {
unsafe {
std::mem::transmute(v)
//~^ ERROR cannot transmute
}
}
fn bar<const W: bool, const H: usize>(v: [[u32; H]; W]) -> [[u32; W]; H] {
//~^ ERROR mismatched types
//~| ERROR mismatched types
unsafe {
std::mem::transmute(v)
//~^ ERROR cannot transmute between types
}
}
fn baz<const W: usize, const H: usize>(v: [[u32; H]; W]) -> [u32; W * H * H] {
unsafe {
std::mem::transmute(v)
//~^ ERROR cannot transmute
}
}
fn overflow(v: [[[u32; 8888888]; 9999999]; 777777777]) -> [[[u32; 9999999]; 777777777]; 8888888] {
unsafe {
std::mem::transmute(v)
//~^ ERROR cannot transmute
}
}
fn main() {}