// Auto-ref of a COMPOUND lvalue (field access / index / deref) passed to a
// `*T` parameter must reference the REAL lvalue, not a copy. Regression: a
// field-access argument (e.g. `make_move(self.board, m)`) silently passed the
// address of a temporary copy, so mutations through the pointer were lost with
// no diagnostic. A plain local (`bump(x)`) already auto-ref'd; now compound
// lvalues do too. Expected: w.s.v == 42 (the real field was mutated).

#import "modules/std.sx";

S :: struct { v: i32; }
W :: struct { s: S; }

bump :: (p: *S) { p.v = p.v + 41; }

main :: () -> i32 {
    w : W = .{ s = .{ v = 1 } };
    bump(w.s);                       // field access, no `@` — auto-refs &w.s
    print("w.s.v = {}\n", w.s.v);    // 42, not 1
    return 0;
}