1ce3a4e9e0
S0 of the ratified Fork C plan (zero-legacy name-resolution redesign, S0→S6).
Pure setup/documentation: NO production code change, NO behavior change.
Single-author output byte-identical to wt-stdlib-base by construction.
Deliverables under docs/fork-c/ (docs/, not current/, because current/ is
gitignored and the contract must be committed):
S0.1 — byte-baseline + commit-discipline: the committed examples/expected/*
snapshots are the single-author byte-identity reference; the zero-diff repro is
`zig build && zig build test && bash tests/run_examples.sh`. Resolver-target set
explicitly excluded + listed. Commit-classification rule: mirror | consumer-cutover | deletion.
S0.2 — E6b disposition + two-corpus partition: transitional E6b src NOT merged
(grep-clean: no resolveRegistrationSigTypeInSource / sig_registration_mode /
e6br_gate.test.zig on baseline). Harvested 0811–0829 trees + goldens (never the
src), empirically partitioned by running each through the base compiler vs the
E6b target:
- baseline-green (mirror-equivalence): 0795–0798 (merged) + 0823, 0828 — given
examples/expected/ markers, locked into the S0 baseline.
- resolver-target (known-wrong old behavior): 0811–0822, 0824–0827, 0829 + the
re-filed E6BR-5 nested-pattern regression — a listed xfail harness under
tests/resolver-target/ (manifest + TARGET goldens, NO active marker), flips
active+green at S3.9. 0811/0829 noted as old-selector-wrong on the E6b-unmerged
base; E6BR-5 subsumed by the whole-AST resolver, NOT an E6b attempt-6.
S0.3 — A–E6 reuse/delete ledger: every load-bearing A–E6 artifact mapped REUSED
(Fork C home) or DELETED/TRANSITIONAL (S3/S6 phase); E6c/d/e dropped, F/H/I/K
absorbed/superseded.
Gate over the baseline-green corpus: zig build + zig build test (LSP corpus sweep
574 files, no crash) + bash tests/run_examples.sh (540 passed, 0 failed) all exit 0.
49 lines
2.2 KiB
Plaintext
49 lines
2.2 KiB
Plaintext
// E6BR-5 regression — the open nested-pattern ambiguity hole that PAUSED E6b,
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// re-filed under Fork C as a RESOLVER-TARGET regression (NOT an E6b attempt-6).
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//
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// Shape: a param-impl SOURCE pattern whose concrete `*Box` leaf is NESTED inside
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// an inner parameterized form that itself carries unbound pack parts
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// (`Closure(*Box, ..$inner) -> $IR`). On flow/stdlib/E6b the bug lived in
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// `walkConcreteSigArgs` (lower.zig:14686): it SKIPS any direct arg that has an
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// unbound part instead of RECURSING into it, so the nested concrete `*Box` leaf
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// is never ambiguity-checked — `impl ... for Closure(Closure(*Box, ..)->.., ..)->..`
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// compiled rc=0 while the DIRECT `Closure(*Box, ..)` form (0829) errored. It was
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// the 3rd consecutive major on the parameterized-pattern surface
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// (bare E6BR-2 -> wrapped E6BR-4 -> nested E6BR-5).
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//
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// CURRENT BASE (wt-stdlib-base, E6b unmerged): both the direct AND the nested
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// concrete leaf silently resolve via the pre-E6BR-4 no-author wrapper path
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// (`type_bridge.resolveTemplateSignatureType`, global last-wins) — this program
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// exits 0 with NO diagnostic. Run it to see the fail-before.
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//
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// TARGET (Fork C, flips active+green at S3.9): the whole-AST resolver walks EVERY
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// reference position — including nested parameterized-pattern leaves — so the
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// nested `Box` is ambiguity-checked like any other reference and the build emits
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// the loud "type 'Box' is ambiguous" diagnostic and exits 1. The exact golden
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// bytes are produced by the resolver at S3.9 (no oracle produces them today);
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// see ../expected/e6br5-nested-pack-source-ambiguous.target.md for the spec.
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//
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// WHY SUBSUMED (one line): a resolver that resolves every reference position has
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// no notion of "skip a nested arg with an unbound sibling" — the nested `*Box`
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// leaf is resolved by construction, so the hole cannot exist.
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#import "modules/std.sx";
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#import "e6br5-nested-pack-source-ambiguous/a.sx";
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#import "e6br5-nested-pack-source-ambiguous/b.sx";
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Block :: struct { tag: s32; }
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Sink :: protocol(T: Type) {
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convert :: () -> T;
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}
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impl Sink(Block) for Closure(Closure(*Box, ..$inner) -> $IR, ..$args) -> $R {
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convert :: (self: Closure(Closure(*Box, ..$inner) -> $IR, ..$args) -> $R) -> Block {
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.{ tag = 0 }
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}
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}
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main :: () -> s32 {
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0
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}
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