```rust
fn main() {
for _ in 0..4_000_000_000 {}
}
```

```bash
cargo build
```
```
Compiling my_test v0.1.0 (/home/benjamin_loison/my_test)
error: literal out of range for `i32`
--> src/main.rs:2:17
|
3 | for _ in 0..4_000_000_000 {}
| ^^^^^^^^^^^^^
|
= note: the literal `4_000_000_000` does not fit into the type `i32` whose range is `-2147483648..=2147483647`
= help: consider using the type `u32` instead
= note: `#[deny(overflowing_literals)]` on by default

error: could not compile `my_test` (bin "my_test") due to 1 previous error
```

Propose a fix to this error.
Jun 4, 7:59am

The error occurs because the literal 4_000_000_000 exceeds the maximum value for a signed 32-bit integer (i32), which is 2_147_483_647. Rust defaults to i32 for integer literals unless specified otherwise.

Fix

To resolve this, explicitly specify the type as u32 (unsigned 32-bit integer) or u64 (unsigned 64-bit integer) for the range. Here’s the corrected code:

rust
fn main() {
    for _ in 0..4_000_000_000u32 {}
}

or

rust
fn main() {
    for _ in 0..4_000_000_000u64 {}
}

This tells Rust to treat the literal as an unsigned integer, which can hold the value 4_000_000_000.

Jun 4, 7:59am

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