```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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