[Bug]: Implicit value not starting at 1

[hamidrezakp]

Is there an existing issue for this?

• [x] I have searched the existing issues

Code of Conduct

• [x] I agree to follow this project's Code of Conduct

Current Behaviour

sets variant values starting at 0

Expected Behaviour

set variants starting at 1

Environment Information

rust: rustc 1.89.0 linux: Linux pc 6.16.1-arch1-1 #1 SMP PREEMPT_DYNAMIC Fri, 15 Aug 2025 16:04:43 +0000 x86_64 GNU/Linux flagset: 0.4.7 with no features

Steps To Reproduce

This code fails when expecting the variant A to be 1.

use flagset::flags;

fn main() {
    let f = Flag::A;
    assert_eq!(f as u64, 1); // This fails.
}

flags! {
    enum Flag: u64 {
        A, // should be 0b001 but is 0b000
        B  // should be 0b002 but is 0b001 
    }
}