// An un-narrowed `?T` does NOT implicitly unwrap to its concrete payload in a
// value position — it is a compile error pointing at the explicit forms.
//
// Regression (issue 0179): passing a `?i64` where `i32` is expected used to
// compile and unconditionally extract the payload, so a NULL optional yielded
// `0` with no diagnostic (silent miscompile across the whole `?T → concrete`
// family, incl. `?bool → bool`). The legal extractions are `!` / `??` /
// binding / `case` / a `!= null` guard (see 0919); everything else is rejected.
#import "modules/std.sx";

takes_i32 :: (x: i32) { print("got {}\n", x); }

main :: () {
    n : ?i64 = null;
    takes_i32(n);    // error: optional does not implicitly unwrap
}