test/tint/identifiers/underscore/prefix/upper/alias.wgsl

@group(0) @binding(0) var<storage, read_write> s: i32;

alias A = i32;
alias _A = i32;
alias B = A;
alias _B = _A;

@compute @workgroup_size(1)
fn f() {
    var c : B;
    var d : _B;

    s = c + d;
}