// `.*` on a non-pointer must be a clean compile diagnostic, NOT a codegen
// panic. Regression: a stale `value.*` (e.g. after a parameter changed from
// `*T` to `T` by value) used to lower a `.deref` with an `.unresolved` result
// type, which slipped through to emit_llvm's "unresolved type reached LLVM
// emission" panic with no source location. `lowerDerefExpr` now diagnoses it.
// Expected: a clean error pointing at the deref; exit 1.

Point :: struct { x: s32; y: s32; }

main :: () -> s32 {
    p : Point = .{ x = 3, y = 4 };
    q := p.*;          // ERROR: `p` is a Point value, not a pointer
    return q.x;
}