Files
ww/test/wcc/data/r839_xmod_incompat_concrete/case.ww
Hojun-Cho 5a8b662d6e test: port 839_xmod_nominal_typeeqast to corpus fixtures
839_xmod_nominal_typeeqast.c -> r839_xmod_nominal_match (run-exit 42),
  r839_xmod_a6_concrete (run), r839_xmod_incompat_concrete (error
  'not assignable'), r839_xmod_distinct_alias (error 'ambiguous
  without nominal layout').

r839_xmod_nominal_match enters DATABYTEID_DIVERGED: the carrier waived
byte-id for the pre-existing cross-module tagged-return spill
divergence; the DIVERGED row makes it loud-on-fix instead. The
typeeqast-layer discriminator itself stays with the lib byteid gate
(test/byteid/libbyteid_test.ww), as the carrier documented.
2026-08-08 14:33:23 +09:00

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//ww:error "not assignable"
// migrated from test/wcc/839_xmod_nominal_typeeqast.c: str into (i64 | e.myerr) has no variant — confident reject, both stages.
package e;
export type myerr = !i64;
package main;
import e;
type u = (i64 | e.myerr);
fn bad(s: str) u = { return s; };
export fn main() i32 = { return 0; };