src/tools/miri/tests/fail/intrinsics/float_to_int_64_nan.rs

#![feature(intrinsics)]

// Directly call intrinsic to avoid debug assertions in libstd
extern "rust-intrinsic" {
    fn float_to_int_unchecked<Float: Copy, Int: Copy>(value: Float) -> Int;
}

fn main() {
    unsafe {
        float_to_int_unchecked::<f64, u32>(f64::NAN); //~ ERROR: cannot be represented in target type `u32`
    }
}