// The following will panic!
    let i32_1 : i32 = -(-2_147_483_647 - 1);
    let i32_2 : i32 = 2_000_000_000 + 2_000_000_000;
    let i32_3 : i32 = -2_147_483_647 - 2_147_483_647;
    let i32_4 : i32 = 46341 * 46341;
    let i32_5 : i32 = (-2_147_483_647 - 1) / -1;

    // These will panic! also
    let i64_1 : i64 = -(-9_223_372_036_854_775_807 - 1);
    let i64_2 : i64 = 5_000_000_000_000_000_000 + 5_000_000_000_000_000_000;
    let i64_3 : i64 = -9_223_372_036_854_775_807 - 9_223_372_036_854_775_807;
    let i64_4 : i64 = 3_037_000_500 * 3_037_000_500;
    let i64_5 : i64 = (-9_223_372_036_854_775_807 - 1) / -1;