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

#write test.zig {
const E = enum(u8) {
    a = undefined,
    b,
};
const U = union(enum(u8)) {
    a: u32 = undefined,
    b,
};
comptime {
    _ = E.a;
}
comptime {
    _ = U.a;
}
#}
#update
#check errors {
test.zig:2:9: error: use of undefined value here causes illegal behavior
test.zig:6:14: error: use of undefined value here causes illegal behavior
#}
