rust/tests/ui/consts/required-consts/collect-in-dead-drop.rs
2024-03-20 11:07:12 +01:00

30 lines
715 B
Rust

//@revisions: noopt opt
//@ build-fail
//@[opt] compile-flags: -O
//! This fails without optimizations, so it should also fail with optimizations.
struct Fail<T>(T);
impl<T> Fail<T> {
const C: () = panic!(); //~ERROR evaluation of `Fail::<i32>::C` failed
}
// This function is not actually called, but is mentioned implicitly as destructor in dead code in a
// function that is called. Make sure we still find this error.
impl<T> Drop for Fail<T> {
fn drop(&mut self) {
let _ = Fail::<T>::C;
}
}
#[inline(never)]
fn called<T>(x: T) {
if false {
let v = Fail(x);
// Now it gest dropped implicitly, at the end of this scope.
}
}
pub fn main() {
called::<i32>(0);
}