rust/src/test/ui/consts/const-eval/const-eval-overflow-3.rs

// Evaluation of constants in array-elem count goes through different
// compiler control-flow paths.
//
// This test is checking the count in an array expression.

// FIXME (#23926): the error output is not consistent between a
// self-hosted and a cross-compiled setup; therefore resorting to
// error-pattern for now.

// error-pattern: attempt to add with overflow

#![allow(unused_imports)]

use std::fmt;
use std::{i8, i16, i32, i64, isize};
use std::{u8, u16, u32, u64, usize};

const A_I8_I
    : [u32; (i8::MAX as usize) + 1]
    = [0; (i8::MAX + 1) as usize];

fn main() {
    foo(&A_I8_I[..]);
}

fn foo<T:fmt::Debug>(x: T) {
    println!("{:?}", x);
}