rust/tests/ui/mir-dataflow/liveness-enum.rs
2023-01-11 09:32:08 +00:00

23 lines
426 B
Rust

#![feature(core_intrinsics, rustc_attrs)]
use std::intrinsics::rustc_peek;
#[rustc_mir(rustc_peek_liveness, stop_after_dataflow)]
fn foo() -> Option<i32> {
let mut x = None;
// `x` is live here since it is used in the next statement...
rustc_peek(x);
dbg!(x);
// But not here, since it is overwritten below
rustc_peek(x); //~ ERROR rustc_peek: bit not set
x = Some(4);
x
}
fn main() {}