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Rust compiler error · checked with rustc 1.99.0

Rust error E0696: `continue` pointing to a labeled block

What it meansA function is using continue keyword incorrectly.

What rustc prints

error[E0696]: `continue` pointing to a labeled block
 --> main.rs:8:9
  |
7 | /     'b: {
8 | |         continue 'b; // error!
  | |         ^^^^^^^^^^^ labeled blocks cannot be `continue`'d
9 | |     }
  | |_____- labeled block the `continue` points to

Real output of rustc 1.99.0 compiling the official example below (2021 edition). Your names and line numbers will differ; the first line is the part to match.

E0696Everything else
Activein rustc 1.99.0
8related errors linked below

The compiler team's explanation

A function is using continue keyword incorrectly.

Erroneous code example:

fn continue_simple() {
    'b: {
        continue; // error!
    }
}
fn continue_labeled() {
    'b: {
        continue 'b; // error!
    }
}
fn continue_crossing() {
    loop {
        'b: {
            continue; // error!
        }
    }
}

Here we have used the continue keyword incorrectly. As we have seen above that continue pointing to a labeled block.

To fix this we have to use the labeled block properly. For example:

fn continue_simple() {
    'b: loop {
        continue ; // ok!
    }
}
fn continue_labeled() {
    'b: loop {
        continue 'b; // ok!
    }
}
fn continue_crossing() {
    loop {
        'b: loop {
            continue; // ok!
        }
    }
}

From rustc --explain E0696 (1.99.0), part of the Rust project, MIT or Apache-2.0. Official page.

Related errors

All 518 Rust error codes · Rust crate data · Glossary

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