leo/docs/error-guides/parser/invalid_address_lit.md

Invalid address literal

Example

This error occurs when a syntactically invalid address is specified.

Erroneous code example:

function main() {
    let addr = aleo1Qnr4dkkvkgfqph0vzc3y6z2eu975wnpz2925ntjccd5cfqxtyu8s7pyjh9;
}

The compiler will reject this code with, for example...:

Error [EPAR0370001]: invalid address literal: 'aleo1Qnr4dkkvkgfqph0vzc3y6z2eu975wnpz2925ntjccd5cfqxtyu8s7pyjh9'
    --> test.leo:2:16
     |
   2 |     let addr = aleo1Qnr4dkkvkgfqph0vzc3y6z2eu975wnpz2925ntjccd5cfqxtyu8s7pyjh9;
     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

A valid address literal must start with aleo1, followed by 58 characters any of which can be either a lowercase letter, or an ASCII digit (0 to 9).

In the example above, the problem is Q, an uppercase letter, and the second character after aleo1.

Solution

To fix the issue, we can write...:

function main() {
    let addr = aleo1qnr4dkkvkgfqph0vzc3y6z2eu975wnpz2925ntjccd5cfqxtyu8s7pyjh9;
}

...and the compiler will accept it.

Note however that the compiler does not check whether the address is valid on-chain, but merely that the written program follows the rules of the language grammar.