mirror of https://github.com/rust-lang/rust
26 lines
803 B
Rust
26 lines
803 B
Rust
//@revisions: noopt opt
|
|
//@ build-fail
|
|
//@[noopt] compile-flags: -Copt-level=0
|
|
//@[opt] compile-flags: -O
|
|
//! Make sure we detect erroneous constants post-monomorphization even when they are unused. This is
|
|
//! crucial, people rely on it for soundness. (https://github.com/rust-lang/rust/issues/112090)
|
|
|
|
struct Fail<T>(T);
|
|
impl<T> Fail<T> {
|
|
const C: () = panic!(); //~ERROR evaluation of `Fail::<i32>::C` failed
|
|
}
|
|
|
|
#[inline(never)]
|
|
fn called<T>() {
|
|
// Any function that is called is guaranteed to have all consts that syntactically
|
|
// appear in its body evaluated, even if they only appear in dead code.
|
|
// This relies on mono-item collection checking `required_consts` in collected functions.
|
|
if false {
|
|
let _ = Fail::<T>::C;
|
|
}
|
|
}
|
|
|
|
pub fn main() {
|
|
called::<i32>();
|
|
}
|