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test: port 839_xmod_nominal_typeeqast to corpus fixtures

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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.
This commit is contained in:
Hojun-Cho
2026-08-08 14:30:11 +09:00
parent 2680fba303
commit 5a8b662d6e
7 changed files with 62 additions and 309 deletions
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7
Makefile
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@@ -598,7 +598,12 @@ DATABYTEID_EXPECTED_MIN = 915
# wwstage spills a wwi-decl'd tagged call-result arg through a 16B
# scratch pair where cstage PUSHQes AX/DX (frame 64 vs 80); runtime-
# equivalent, sibling of the closed #211 name-keyed family.
DATABYTEID_DIVERGED = r700_strings_byteindex
# r839_xmod_nominal_match: latent, exposed by the 839 migration (the
# carrier waived byte-id silently) — same spill family as r700: wwstage
# routes the cross-module tagged call-result through a 16B scratch pair
# where cstage PUSHQes AX/DX (frame 16 vs 32); runtime-equivalent
# (both stages run exit 42).
DATABYTEID_DIVERGED = r700_strings_byteindex r839_xmod_nominal_match
$(if $(DATABYTEID_FILES),,$(error test-byteid: empty data corpus))
test-data-byteid: $(BIN)/ww $(BIN)/w6c $(BIN)/w6c_ww
@work=$$(mktemp -d "$(CURDIR)/$(DATABYTEID_DIR).XXXXXX") || exit 1; \