Files
sx/examples/0765-modules-import-reflection-type-non-transitive.sx
agra bb8f7dc5ec fix(stdlib/E4): route reflection/literal/value/match bare-type sites through the non-transitive gate
attempt-3 closed the leaf + parameterized-head leaks but several more
sites still resolved an UNQUALIFIED type name via the global
type_alias_map / findByName / type_bridge.resolveAstType without the
single-hop visibility gate, so a 2-flat-hop bare type leaked through:

  - resolveTypeArg (reflection / size_of / align_of / type_name / type_eq):
    identifier + type_expr leaves now gate via headTypeLeak; the wrapped /
    structural forms (*T, [N]T, []T, ?T, fn-ptr, tuple) route through the
    already-gated resolveTypeWithBindings so each inner leaf recurses the
    source-aware resolveNominalLeaf.
  - resolveTupleLiteralTypeArg: each element leaf is resolved through the
    source-aware resolver before the delegated build, so (COnly, s64) is
    gated.
  - resolveArrayLiteralType (T.[...] typed array/vector-literal head):
    identifier + type_expr leaves gate via headTypeLeak.
  - type-as-value lowerExpr identifier (x: Type = COnly, x == COnly).
  - type-category match arm (case COnly:).

Qualified ns.X / 1-hop / source-pinned library-internal references stay
exempt (the gate falls through for reachable / unauthored names, and
returns the existing "unresolved type" diagnostic for genuinely-undeclared
names). README notes the type gate holds wherever a bare type name is
named. New regressions 0765 (2-hop reject) / 0766 (1-hop pass).
2026-06-08 13:18:51 +03:00

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// `#import` is non-transitive for a type named in a REFLECTION / type-arg slot
// (`size_of(T)`, `size_of(*T)`) and in a TYPED ARRAY-LITERAL annotation
// (`T.[...]`), exactly like a bare leaf annotation (0763), a parameterized head
// (0764), and values/functions (0706): when A imports B and B imports C, A must
// NOT see C's top-level types here either. This file imports `b.sx` (which
// imports `c.sx`) and references C's `Nums` / `COnly` in those positions — each
// is rejected with a "type ... is not visible; #import the module that declares
// it" diagnostic, BEFORE the global type table can resolve it.
//
// `b.sx` ↔ `c.sx` together still compile: `b_sizes` / `b_arr` resolve `Nums` /
// `COnly` because b.sx directly imports c.sx (one flat hop there, two from a
// file that imports b.sx).
//
// Regression (Phase E4): before the bare-TYPE gate reached the reflection
// type-arg and array-literal leaf sites, these 2-flat-hop references leaked
// through the global `type_alias_map` / `findByName` / `type_bridge` lookup.
#import "modules/std.sx";
#import "0765-modules-import-reflection-type-non-transitive/b.sx";
main :: () -> s32 {
print("{}\n", size_of(Nums));
print("{}\n", size_of(*COnly));
xs := Nums.[1, 2];
print("{} {}\n", xs[0], xs[1]);
0
}