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

#write test.zig {
comptime {
    var a: i64 = undefined;
    var b: u6 = undefined;
    _ = &a;
    _ = &b;
    _ = @shlWithOverflow(a, b);
}
#}
#update
#check errors {
test.zig:6:26: error: use of undefined value here causes illegal behavior
#}
