// A genuinely-undeclared type in an IMPORTED GENERIC struct field must emit
// "unknown type" even when the struct is instantiated from the main file —
// 0759 only covered a non-generic imported struct instantiated in-module.
// Before the fix the generic template's fields resolved in the main-file
// instantiation context, so the leaf trusted them as main-file decls and
// silently stubbed `Missing` (the program compiled and printed `b.x`). The
// template's fields now resolve in the template's own source context, so the
// undeclared name surfaces.
//
// Expected: `error: unknown type 'Missing'` pointing into lib.sx; exit 1.
// Regression (stdlib E3).
#import "modules/std.sx";
#import "0761-modules-imported-generic-undeclared-field/lib.sx";

main :: () -> i32 {
    b : Bad(i32) = .{ x = 1, y = 2 };
    print("{}\n", b.x);
    return 0;
}