-- KNOWN GAP, pinned deliberately (Task 4 review, Important 2). `Rock`
-- does not have a `current_price` method, so it does not structurally
-- satisfy `Priced` -- and its full method set is known at compile time,
-- so this violation IS provable statically. By the hybrid-boundary
-- doctrine (provable -> compile-time, unprovable -> runtime) this ought
-- to be WO-E205 (unsatisfied-interface) at the `quote(r)` call site.
--
-- It isn't: WO-E205 is declared in types.ml but has no call site today
-- (docs/plan/oop-vm/01-error-catalog.md). This compiles clean (exit 0,
-- zero diagnostics) and the unsatisfied call instead reaches `wovm` as
-- an `ICALL` with no matching vtable entry, which traps `WO_T_BOUNDS`
-- (6) -- "no vtable entry for receiver class". That is the CURRENT,
-- observed behavior this fixture pins, not the desired one.
--
-- When WO-E205 is implemented, this exact program must start failing to
-- *compile* instead -- move this fixture to compile-fail/ with
-- fixture.code WO-E205 in the same change that wires the check, rather
-- than leaving a stale trap/ fixture silently describing dead behavior.
interface Priced {
  fn current_price() -> Int
}

class Rock {
  n: Int
}

fn quote(p: Priced) -> Int {
  return p.current_price()
}

fn main() {
  let r = Rock { n: 1 }
  print_int(quote(r))
}