#zig build-obj {
--name test -fno-emit-bin
-Mroot=test.zig
#}

#write test.zig {
export fn returns() void {
    while (optionalReturn()) |_| {
        while (optionalReturn()) |_| {
            return _;
        }
    }
}
fn optionalReturn() ?u32 {
    return 1;
}
#}
#update
#check errors {
test.zig:4:20: error: '_' used as an identifier without @"_" syntax
#}
